-
question_answer1)
Which of the following metal shrinks most from molten state to solid state?
A)
Cast iron done
clear
B)
cast steel done
clear
C)
Brass done
clear
D)
admiralty metal done
clear
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question_answer2)
Which of the following generally decreases in the steel after quench-hardening
1. Brittleness |
2. Percentage elongation |
3. Impact strength |
A)
1 and 2 only done
clear
B)
2 and 3 only done
clear
C)
1 and 3 only done
clear
D)
1, 2 and 3 done
clear
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question_answer3)
Match List-I (Ingredients) with List-II (Welding functions) and select the correct answer using the codes given below the lists:
List-I (Ingredients) | List-II (Welding function) |
A. | Silica | 1. | Arc stabilizer |
B. | Potassium silicate | 2. | De-oxidizer |
C. | Ferro silicon | 3. | Fluxing agent |
D. | Cellulose | 4. | Gas forming |
Codes:
A)
A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1 done
clear
B)
A\[\to \]2, B\[\to \]1, C\[\to \]3, D\[\to \]4 done
clear
C)
A\[\to \]3, B\[\to \]1, C\[\to \]2, D\[\to \]4 done
clear
D)
A\[\to \]2, B\[\to \]4, C\[\to \]3, D\[\to \]1 done
clear
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question_answer4)
A carbon steel having Brinell Hardness number 100 should have ultimate tensile strength closer to:
A)
\[1000\,\,\text{N/m}{{\text{m}}^{\text{2}}}\] done
clear
B)
\[200\,\,\text{N/m}{{\text{m}}^{\text{2}}}\] done
clear
C)
\[350\,\,\text{N/m}{{\text{m}}^{\text{2}}}\] done
clear
D)
\[1000\,\,\text{N/m}{{\text{m}}^{\text{2}}}\] done
clear
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question_answer5)
In case carburizing carbon is introduced to form a high carbon layer at the surface. The carbon is introduce in the form of:
A)
Graphite flakes done
clear
B)
pearlite done
clear
C)
Cementite done
clear
D)
free carbon done
clear
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question_answer6)
Match the following:
List-I (Alloying element in steel) | List-II (Effect) |
A. | Lead | 1. | Restricts grain growth |
B. | Aluminium | 2. | Raises yield point |
C. | Copper | 3. | Reduces strength to impact |
D. | Phosphorus | 4. | Free machining |
Codes:
A)
A\[\to \]1, B\[\to \]2, C\[\to \]3, D\[\to \]4 done
clear
B)
A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 done
clear
C)
A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2 done
clear
D)
A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 done
clear
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question_answer7)
Presence of hydrogen in steel causes:
A)
Reduced neutron absorption cross-section done
clear
B)
Improved weld ability done
clear
C)
embrittlement done
clear
D)
Corrosion resistance. done
clear
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question_answer8)
The main alloying elements in high speed steel in order of increasing proportion:
A)
Vanadium, Chromium, Tungesten done
clear
B)
Tungsten, Titanium, Vanadium done
clear
C)
Chromium, Titanium, Vanadium done
clear
D)
Tungsten, Chromium, Titanium done
clear
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question_answer9)
Dye penetrant method is generally used to locate:
A)
Core defects done
clear
B)
surface defects done
clear
C)
Superficial defects done
clear
D)
temporary defects. done
clear
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question_answer10)
Herbert cloudburst hardness test is conducted to know:
A)
Uniformity of hardness over a surface done
clear
B)
Softness of non-metallic components done
clear
C)
Hardness of non-metallic components done
clear
D)
Hardness at specified depth inside the surface done
clear
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question_answer11)
Which of the following statement is true about brittle fracture?
A)
High temperature and low strain rates favour brittle fracture done
clear
B)
Many metal with HCP crystal structure commonly show brittle fracture done
clear
C)
Brittle fracture is always preceded by noise done
clear
D)
Cup and cone formation is characteristic for brittle materials. done
clear
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question_answer12)
Which of the following is a point imperfection
1. Vacancy |
2. Interstitially |
3. Frenkel imperfection |
4. Schottky imperfection |
A)
1 and 2 only done
clear
B)
2 and 3 only done
clear
C)
2, 3 and 4 only done
clear
D)
1, 2, 3 and 4 done
clear
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question_answer13)
Fillers are added to plastics to:
A)
Improve flow done
clear
B)
Reduce brittleness done
clear
C)
Facilitate processibility done
clear
D)
Reduce cost. done
clear
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question_answer14)
Quenching is not necessary when hardening is done by:
A)
Case carburizing done
clear
B)
Flame hardening done
clear
C)
nitriding done
clear
D)
Any of the above processes. done
clear
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question_answer15)
Specify the sequence correctly:
A)
Grain growth, recrystallization, stress relief done
clear
B)
Stress relief, grain growth, recrystallization done
clear
C)
Stress relief, recrystallization grain growth done
clear
D)
Grain growth, stress relief, recrystallization done
clear
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question_answer16)
Small percentage of boron is added to steel to:
A)
Increases hardenability done
clear
B)
Reduce machinability done
clear
C)
Increases wear resistance done
clear
D)
Increase endurance strength. done
clear
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question_answer17)
Machine tool frame should have:
A)
High rigidity to weight ratio done
clear
B)
Graphite in the form of nodules done
clear
C)
Low hardness done
clear
D)
High work hardness. done
clear
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question_answer18)
Which of the following display properties similar to that of steel?
1. Black-heart cast iron |
2. White-heart cast iron |
3. Gray cast iron |
4. Pig iron |
A)
1 and 2 only done
clear
B)
3 and 4 only done
clear
C)
2 and 4 only done
clear
D)
1 and 3 only done
clear
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question_answer19)
For the pipe fitting like elbow, tee, union etc. which of the following is preferred?
A)
Pig iron done
clear
B)
Malleable iron done
clear
C)
Spheroidal graphite cast iron done
clear
D)
High carbon steel. done
clear
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question_answer20)
Addition of which of the following improves 3 machining of copper?
A)
sulphur done
clear
B)
vanadium done
clear
C)
Tin done
clear
D)
zinc done
clear
View Solution play_arrow
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question_answer21)
Temperature required for full annealing in hyper- eutectoid steel is:
A)
\[50{}^\circ C\] above upper critical temperature \[(A{{C}_{3}})\] done
clear
B)
\[50{}^\circ C\] below upper critical temperature \[(A{{C}_{3}})\] done
clear
C)
\[50{}^\circ C\] above lower critical temperature \[(A{{C}_{1}})\] done
clear
D)
\[50{}^\circ C\] below lower critical temperature \[(A{{C}_{1}})\] done
clear
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question_answer22)
Polyamides are characterized by:
A)
Flexible chain done
clear
B)
Rigid chain done
clear
C)
amorphous structure done
clear
D)
Crystalline structure done
clear
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question_answer23)
Which of the following would you prefer for checking the hardness of thin sections?
A)
Hebert cloud burst test done
clear
B)
Shore's Seleroscope done
clear
C)
Knoop hardness test done
clear
D)
Vickers hardness test done
clear
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question_answer24)
The percentage of phosphorous in phosphor bronze is:
A)
0.1 done
clear
B)
1 done
clear
C)
11.1 done
clear
D)
98 done
clear
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question_answer25)
Invar is used or measuring tapes primarily due to its:
A)
Non-magnetic properties done
clear
B)
High nickel content done
clear
C)
Low coefficient of thermal expansion done
clear
D)
Hardenability done
clear
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question_answer26)
Which of the following statement is incorrect about duralumin?
A)
It is prone to age hardening done
clear
B)
It can he forged done
clear
C)
It has good machining properties done
clear
D)
It is lighter than pure aluminium. done
clear
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question_answer27)
Carriage brass can be:
A)
Cold rolled into sheets done
clear
B)
Drawn into wires done
clear
C)
Formed into tubes done
clear
D)
Any of the above. done
clear
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question_answer28)
Induction hardening is basically a:
A)
Carburising process done
clear
B)
Surface hardening process done
clear
C)
Core-hardening process done
clear
D)
None of the above. done
clear
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question_answer29)
The microstructure composition of pearlite for and \[F{{e}_{3}}C\] diagram consists of:
A)
Carbon dissolved in alpha iron having a body- centered cubic structure done
clear
B)
Carbon dissolved in gama iron having a face- centered cubic structure done
clear
C)
A mixture of body-centered alpha iron and face entered gamma iron done
clear
D)
Carbon dissolved in body-centered alpha iron and an \[{{F}_{e}}F{{e}_{3}}C.\] done
clear
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question_answer30)
Match List-I with List-II and select the correct answer using the codes given be lists:
List-I (Steel type) | List-II (Product) |
A. | Mild steel | 1. | Screw driver |
B. | Tool steel | 2. | Commercial beams |
C. | Medium carbon steel | 3. | Crane hooks |
D. | High carbon steel | 4. | Blanking dies |
Codes:
A)
A\[\to \]1, B\[\to \]4, C\[\to \]3, D\[\to \]4 done
clear
B)
A\[\to \]2, B\[\to \]4, C\[\to \]4, D\[\to \]1 done
clear
C)
A\[\to \]1, B\[\to \]3, C\[\to \]1, D\[\to \]2 done
clear
D)
A\[\to \]2, B\[\to \]1, C\[\to \]2, D\[\to \]3 done
clear
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question_answer31)
Which of the following statements are true of annealing of steels?
(1) Steels are heated to 500 to \[700{}^\circ C\] |
(2) Cooling is done slowly and steadily |
(3) Internal stresses are relieved |
(4) Ductility of steel is reduced. |
Select the correct answer using the codes given below:
A)
2, 3 and 4 done
clear
B)
1, 3and 4 done
clear
C)
1, 2 and 4 done
clear
D)
1, 2 and 3. done
clear
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question_answer32)
Duralumin alloy contains aluminium and copper in the ratio of:
A)
B)
C)
D)
View Solution play_arrow
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question_answer33)
Eutectic reaction for iron-carbon system occurs at:
A)
\[600{}^\circ C\] done
clear
B)
\[723{}^\circ C\] done
clear
C)
\[1147{}^\circ C\] done
clear
D)
\[1493{}^\circ C\] done
clear
View Solution play_arrow
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question_answer34)
The blade of a power saw is made of:
A)
Boron steel done
clear
B)
high speed steel done
clear
C)
Stainless steel done
clear
D)
malleable cast iron done
clear
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question_answer35)
Which of the following pairs arc correctly matched?
1. Cellulose nitrate..........Table tenis ball. |
2. Phenol furfurol...........Brake linings. |
3. Kpoxits ..........Jigs and fixtures. |
Select the correct answer using the codes given below: |
Codes:
A)
1 and 2 done
clear
B)
2 and 3 done
clear
C)
1 and 3 done
clear
D)
1, 2 and 3 done
clear
View Solution play_arrow
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question_answer36)
Quartz is a:
A)
Ferroelectric material done
clear
B)
Ferromagnetic material done
clear
C)
Piezoelectric material done
clear
D)
Diamagnetic material. done
clear
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question_answer37)
Which of the following pairs are correctly matched?
1. Resilience........... resistance to deformation |
2. Malleability ............ shape change |
3. Creep........... progressive deformation |
4. Plasticity.............. permanent deformation |
Select the answer using codes given below: |
Codes:
A)
2, 3 and 4 done
clear
B)
1, 2 and 3 done
clear
C)
1, 2 and 4 done
clear
D)
1, 3 and 4 done
clear
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question_answer38)
Consider the following treatments:
1. Normalizing |
2. Hardening |
3. Martempering |
4. Cold working. |
Hardness and tensile strength in austenitic stainless steel can be increased by:
A)
1, 2 and 3 done
clear
B)
1 and 3 done
clear
C)
2 and 4 done
clear
D)
4 alone done
clear
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question_answer39)
Killed steels:
A)
Have minimum impurity level done
clear
B)
Have almost zero percentage of phosphorus and sulphur done
clear
C)
Are produced by LD process done
clear
D)
Are free from oxygen. done
clear
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question_answer40)
Which of following pairs are correctly matched?
1. Silicon steels .......... transformer stamping |
2. Duralumin .......... cooking utensils |
3. Gun metal.........bearings. |
Select the correct answer using the codes given below: |
Codes:
A)
1, 2, and 3 done
clear
B)
1 and 2 done
clear
C)
1 and 3 done
clear
D)
2 and 3 done
clear
View Solution play_arrow
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question_answer41)
Which of the following pairs of plastic and their modes of formation are correctly matched?
1. Polythene ............. condensation polymerization |
2. Polycarbonate............ addition polymerization |
3. Polystyrene .............addition polymerization |
4. Polyamide..........either by addition or by condensation polymerization. |
Select the correct answer using the codes given below: |
Codes:
A)
1 and 2 done
clear
B)
2 and 4 done
clear
C)
1 and 4 done
clear
D)
3 and 4 done
clear
View Solution play_arrow
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question_answer42)
Cubic boron nitride is used:
A)
As lining material in induction furnaces done
clear
B)
For making optical quality glass done
clear
C)
For heat treatments done
clear
D)
as/for none of the above done
clear
View Solution play_arrow
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question_answer43)
Match List-I (materials) With List-II (applications) and select the correct answer using the codes given below the lists:
List-I | List-II |
A. | Engineering ceramics | 1. | Bearings |
B. | Fiber reinforced | 2. | Control plastics rods in nuclear reactors |
C. | Synthetic carbon | 3. | Aerospace industry |
D. | Boron | 4. | Electrical insulator |
Codes:
A)
A\[\to \]1, B\[\to \]2, C\[\to \]3, D\[\to \]4 done
clear
B)
A\[\to \]1, B\[\to \]4, C\[\to \]3, D\[\to \]2 done
clear
C)
A\[\to \]2, B\[\to \]3, C\[\to \]1, D\[\to \]4 done
clear
D)
A\[\to \]4, B\[\to \]3, C\[\to \]1, D\[\to \]2 done
clear
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question_answer44)
Which of the following pairs are correctly matched?
1. Lead.......... screw nutphosphor bronze. |
2. Piston..........cast iron. |
3. Cam..........EN-31 steel. |
4. Lead screw..........wrought iron. |
Select the correct answer using the codes given below:
A)
2, 3 and 4 done
clear
B)
1, 3 and 4 done
clear
C)
1, 2 and 4 done
clear
D)
1, 2 and 3 done
clear
View Solution play_arrow
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question_answer45)
In low carbon steels, presence of small quantities sulphur improves:
A)
weldability done
clear
B)
formability done
clear
C)
Machinability done
clear
D)
hardenability. done
clear
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question_answer46)
Consider the following statements: Addition of silicon to cast iron
1. Promotes graphite module formation. |
2. Promotes graphite flake formation. |
3. Increases the fluidity of the molten metal. |
4. Improves the ductility of cast iron. |
Of these statements:
A)
1 and 4 are correct done
clear
B)
2 and 3 are correct done
clear
C)
1 and 3 are correct done
clear
D)
3 and 4 are correct. done
clear
View Solution play_arrow
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question_answer47)
Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I (Heat treatment) | List-II (Effect on the properties) |
A. | Annealing | 1. | Refined grain structure |
B. | Nitriding | 2. | Improves the hardness of the whole mass |
C. | Martempering | 3. | Increases surface hardness |
D. | Normalizing | 4. | Improves ductility. |
Codes:
A)
A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 done
clear
B)
A\[\to \]1, B\[\to \]3, C\[\to \]4, D\[\to \]2 done
clear
C)
A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3 done
clear
D)
A\[\to \]2, B\[\to \]1, C\[\to \]3, D\[\to \]4 done
clear
View Solution play_arrow
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question_answer48)
Eutectoid reaction occurs at:
A)
\[600{}^\circ C\] done
clear
B)
\[723{}^\circ C\] done
clear
C)
\[114{}^\circ C\] done
clear
D)
\[1493{}^\circ C\] done
clear
View Solution play_arrow
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question_answer49)
Match List-I with List-II and select the correct answer using the codes give below the lists:
List-I (Name of material) | List-II (% carbon range) |
A. | Hypo-eutectoid steel | 1. | \[4.3\,\,-\,\,5.67\] |
B. | Hyper-eutectoid steel | 2. | \[2.0\,\,-\,\,4.3\] |
C. | Hypo-eutectic cast iron | 3. | \[0.8\,\,-\,\,2.0\] |
D. | Hyper-eutectic cast iron | 4. | \[0.008\,\,-\,\,0.8\] |
Codes:
A)
A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 done
clear
B)
A\[\to \]1, B\[\to \]3, C\[\to \]2, D\[\to \]4 done
clear
C)
A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 done
clear
D)
A\[\to \]1, B\[\to \]2, C\[\to \]3, D\[\to \]4 done
clear
View Solution play_arrow
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question_answer50)
Which one of the following sets of constituents is expected in equilibrium cooling of a hypereutectoid steel from austenitic state?
A)
Ferrite and pearlite done
clear
B)
Cementite and pearlite done
clear
C)
Ferrite and bainite done
clear
D)
Cementite and martensite. done
clear
View Solution play_arrow
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question_answer51)
Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I (Alloy) | List-II (Use) |
A. | Low carbon steel | 1. | Bearing |
B. | Hadfield mangenese steel | 2. | Thermocouple |
C. | Constantan | 3. | Wire nails |
D. | Babbit alloy | 4. | Bulldozer blades |
Codes:
A)
A\[\to \]1, B\[\to \]2, C\[\to \]3, D\[\to \]4 done
clear
B)
A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2 done
clear
C)
A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]4 done
clear
D)
A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1 done
clear
View Solution play_arrow
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question_answer52)
The structure of a polymer is shown in the given figure. This polymer finds special application in:
A)
Packaging done
clear
B)
adhesives done
clear
C)
Bearings done
clear
D)
fertilizer done
clear
View Solution play_arrow
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question_answer53)
Addition of magnesium to cast iron increases its:
A)
Hardness done
clear
B)
Ductility and strength in tension done
clear
C)
Corrosion resistance done
clear
D)
Creep strength. done
clear
View Solution play_arrow
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question_answer54)
Which one of the following materials will require the largest size of riser for the same casting?
A)
Aluminum done
clear
B)
Cast iron done
clear
C)
Steel done
clear
D)
Copper. done
clear
View Solution play_arrow
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question_answer55)
Consider the following statements: When a metal or alloy is cold worked:
(1) It is worked below room temperature. |
(2) It is worked below recrystallization temperature. |
(3) Its hardness and strength increase. |
(4) Its hardness increases but strength does |
Of these statements:
A)
1 and 4 are correct done
clear
B)
1 and 3 are correct done
clear
C)
2 and 3 are correct done
clear
D)
2 and 4 are correct. done
clear
View Solution play_arrow
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question_answer56)
Which of the following pairs regarding the effect of alloying elements in steel are correctly matched?
1. Molybdenum: Forms abrasion resisting particles. |
2. Phosphorus: Improves machinability in free cutting steels. |
3. Cobalt: Contributes to red hardness by hardening ferrite. |
4. Silicon: Reduces oxidation resistance. |
Select the correct answer using the codes given below:
A)
2, 3 and 4 done
clear
B)
1, 3 and 4 done
clear
C)
1, 2 and 4 done
clear
D)
1, 2 and 3 done
clear
View Solution play_arrow
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question_answer57)
Machine tool guideways are usually hardened by:
A)
Vacuum hardening done
clear
B)
Martempering done
clear
C)
Induction hardening done
clear
D)
Name hardening. done
clear
View Solution play_arrow
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question_answer58)
18/8 stainless steel contains:
A)
18%, stainless, 8% chromium done
clear
B)
18% chromium, 8% nickel done
clear
C)
18% tungsten, 8% nickel done
clear
D)
18% tungsten, 8% chromium done
clear
View Solution play_arrow
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question_answer59)
Tin base white metals are used were the bearings are subjected to:
A)
Large surface wear done
clear
B)
Elevated temperatures done
clear
C)
Light load and pressure done
clear
D)
High pressure and load. done
clear
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question_answer60)
Alloy steel which is work hardenable and which is used to make the blades of bulldozers, bucket wheel excavators and other earth moving equipment contain iron, carbon and:
A)
Chromium done
clear
B)
silicon done
clear
C)
Manganese done
clear
D)
magnesium. done
clear
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question_answer61)
Consider the following statements:
Thermosetting plastics are |
1. Formed by addition polymerisation. |
2. Formed by condensation polymerisation. |
3. Softened on heating and hardened on cooling for any number of times. |
4. Moulded by heating and cooling. |
Of these statements:
A)
1 and 3 are correct done
clear
B)
2 and 4 are correct done
clear
C)
1 and 4 are correct done
clear
D)
3 and 4 are correct. done
clear
View Solution play_arrow
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question_answer62)
Match List-I with List-II and select the correct answer
List-I | List-II (Nature of product) |
A. | Polyethylene | 1. | Adhesive |
B. | Polyurethane | 2. | Film |
C. | Cyano-acrylate | 3. | Wire |
D. | Nylon | 4. | Foam |
Codes:
A)
A\[\to \]2, B\[\to \]4, C\[\to \]3, D\[\to \]1 done
clear
B)
A\[\to \]4, B\[\to \]2, C\[\to \]3, D\[\to \]1 done
clear
C)
A\[\to \]2, B\[\to \]4, C\[\to \]1, D\[\to \]3 done
clear
D)
A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3 done
clear
View Solution play_arrow
-
question_answer63)
Consider the following statements: Fibre reinforced plastics are
1. Made of thermosetting resins and glass fibre. |
2. Made of thermoplastic resins and glass fibre. |
3. Anisotropic. |
4. Isotropic. |
Of these statements:
A)
1 and 4 are correct done
clear
B)
1 and 3 are correct done
clear
C)
2 and 3 are correct done
clear
D)
2 and 4 are correct done
clear
View Solution play_arrow
-
question_answer64)
The highest stress that a material can withstand for a specified length of time without excessive deformation is called:
A)
Fatigue strength done
clear
B)
Endurance strength done
clear
C)
Creep strength done
clear
D)
Creep rupture strength done
clear
View Solution play_arrow
-
question_answer65)
Guideways of lathe beds are hardened by
A)
Carburizing done
clear
B)
Cyaniding done
clear
C)
nitriding done
clear
D)
Flame hardening. done
clear
View Solution play_arrow
-
question_answer66)
A given steel test specimen is studied under metallurgical microscope, magnification used is 100 X. In that different phases are observed. One of them is \[F{{e}_{3}}C.\] The observed phase \[F{{e}_{3}}C\] is also known as:
A)
Ferrite done
clear
B)
cementite done
clear
C)
Austenite done
clear
D)
martensite done
clear
View Solution play_arrow
-
question_answer67)
Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I | List-II |
A | Toughness | 1. | Moment area methode |
B. | Endurance strength | 2. | Hardness |
C. | Resistance to abrasion | 3. | Energy absorbed before fracture in a tension test |
D. | Deflection in beam | 4. | Fatigue loading |
Codes:
A)
A\[\to \]4, B\[\to \]3, C\[\to \]1, D\[\to \]2 done
clear
B)
A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 done
clear
C)
A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1 done
clear
D)
A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2 done
clear
View Solution play_arrow
-
question_answer68)
In metals subjected to cold working, strain hardening effect is due to:
A)
Slip mechanism done
clear
B)
Twining mechanism done
clear
C)
Dislocation mechanism done
clear
D)
Fracture mechanism. done
clear
View Solution play_arrow
-
question_answer69)
Match List-I with List-II and select the correct answer using the codes are given below the lists:
List-I | List-II |
A. | Neoprene | 1. | Electric switches |
B. | Bakelite | 2. | Adhesive |
C. | Foamed polyurethane | 3. | Thermal insulator |
D. | Araldite | 4. | Oil seal |
Codes:
A)
A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 done
clear
B)
A\[\to \]1, B\[\to \]4, C\[\to \]2, D\[\to \]3 done
clear
C)
A\[\to \]4, B\[\to \]1, C\[\to \]3, D\[\to \]2 done
clear
D)
A\[\to \]1, B\[\to \]4, C\[\to \]3, D\[\to \]2 done
clear
View Solution play_arrow
-
question_answer70)
Which one of the following materials is used for car types as a standard material?
A)
Styrene-butadiene rubber (SBR) done
clear
B)
Butyl rubber done
clear
C)
Nitrile rubber done
clear
D)
Any one of the above depending upon the need done
clear
View Solution play_arrow
-
question_answer71)
Which one of the following refractory materials is recommended for steel furnaces containing CaO stages?
A)
Alumina done
clear
B)
Silica done
clear
C)
Magnesia done
clear
D)
Fireclay done
clear
View Solution play_arrow
-
question_answer72)
Which of the following properties of a solid are dependent on crystal imperfections?
1. Yield stress |
2. Melting point |
3. Semi conductivity |
4. Ductility |
Select the correct answer using the codes given below:
A)
1 and 3 done
clear
B)
1, 3 and 4 done
clear
C)
2, 3 and 4 done
clear
D)
2 and 4 done
clear
View Solution play_arrow
-
question_answer73)
Match List-I (Alloying element in steel) with List-II (Property conferred or steel by the element) and select the correct answer using below the lists:
List-I | List-II |
A. | Nickel | 1. | Corrosion resistance |
B. | Chromium | 2. | Magnetic permeability |
C. | Tungsten | 3. | Heat resistance |
D. | Silicon | 4. | Hardenabiliry |
Codes:
A)
A\[\to \]4, B\[\to \]1, C\[\to \]3, D\[\to \]2 done
clear
B)
A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 done
clear
C)
A\[\to \]1, B\[\to \]4, C\[\to \]3, D\[\to \]2 done
clear
D)
A\[\to \]1, B\[\to \]4, C\[\to \]2, D\[\to \]3 done
clear
View Solution play_arrow
-
question_answer74)
In the basic EOQ model, if demand is 60 per month ordering costing Rs.12 per order holding cost is Rs.1 per unit per month what is the EOQ?
A)
12 done
clear
B)
144 done
clear
C)
24 done
clear
D)
28 done
clear
View Solution play_arrow
-
question_answer75)
Match List-I (Alloys) with List-II (Applications) and select the correct answer using the codes given below the lists:
List-I | List-II |
A. | Chromal | 1. | Journal bearing |
B. | Babbit alloy | 2. | Milling cutter |
C. | Nimonic alloy | 3. | Thermocouple wire |
D. | High speed steel | 4. | Gas turbine blades |
Codes:
A)
A\[\to \]3, B\[\to \]1, C\[\to \]4, D\[\to \]2 done
clear
B)
A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2 done
clear
C)
A\[\to \]2, B\[\to \]4, C\[\to \]1, D\[\to \]3 done
clear
D)
A\[\to \]2, B\[\to \]1, C\[\to \]4, D\[\to \]3 done
clear
View Solution play_arrow
-
question_answer76)
Which one or the following is correct? In the basis EOQ model, if lead time increases from 5 to 10 days, the EOQ will:
A)
Double done
clear
B)
Decrease by a factor of two done
clear
C)
Remain the same done
clear
D)
The data is insufficient to find EOQ. done
clear
View Solution play_arrow
-
question_answer77)
Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I (Material) | List-II (Structure) |
A. | Charcoal | 1. | I. F.C.C. |
B. | Graphite | 2. | H.C.P. |
C. | Chromium | 3. | Amorphous |
D. | Copper | 4. | B.CC. |
Codes:
A)
A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]4 done
clear
B)
A\[\to \]3, B\[\to \]2, C\[\to \]4, D\[\to \]1 done
clear
C)
A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 done
clear
D)
A\[\to \]2, B\[\to \]3, C\[\to \]1, D\[\to \]4 done
clear
View Solution play_arrow
-
question_answer78)
Consider the following statements: The strength the fibre reinforced plastic product
1. Depends upon the strength of the fibre alone |
2. Depends upon the fibre and plastic |
3. Is isotropic |
4. Is anisotropic. |
Which of these statements are correct?
A)
1 and 3 done
clear
B)
1 and 4 done
clear
C)
2 and 3 done
clear
D)
2 and 4 done
clear
View Solution play_arrow
-
question_answer79)
Match List-I (Crystal structure) with List-II (atomic packing factor) and select the correct answer using the codes given below the lists:
List-I | List-II |
A. | Simple cubic | 1. | 94% |
B. | Body-centred cubic | 2. | 74% |
C. | Face-centred cubic | 3. | 52% |
D. | Hexagonal close packed | 4. | 68% |
Codes:
A)
A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1 done
clear
B)
A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 done
clear
C)
A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2 done
clear
D)
A\[\to \]4, B\[\to \]3, C\[\to \]1, D\[\to \]2 done
clear
View Solution play_arrow
-
question_answer80)
Consider the following pairs of plastics and their distinct characteristics:
1. Acrylics very good transparency to light |
2. Polycarbonate poor impact resistance. |
3. PTEF low coefficient of friction. |
4. Polypropylene excellent fatigue strength- |
Which of these statements are correct?
A)
2 and 3 done
clear
B)
1 and 3 done
clear
C)
1 and 4 done
clear
D)
2 and 4. done
clear
View Solution play_arrow
-
question_answer81)
Gibb's phase rule is given by (F = number of degrees of freedom, C = number of components, P = number of phases):
A)
\[F=C+P\] done
clear
B)
\[F=C+P\,-\,2\] done
clear
C)
\[F=C\,-\,P\,-\,2\] done
clear
D)
\[F=C\,-\,P+2\] done
clear
View Solution play_arrow
-
question_answer82)
Which of the following are the benefits inventory control?
1. Improvement in customers relationship. |
2. Economy in purchasing |
3. Elimination of the possibility of duplicate ordering. |
Select the correct answer using the code given below:
A)
1, 2 and 3 done
clear
B)
1 and 2 only done
clear
C)
2 and 3 only done
clear
D)
1 and 3 only done
clear
View Solution play_arrow
-
question_answer83)
Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I (Material) | List-II (Applications) |
A. | Tungsten carbide | 1. | Abrasive wheels |
B. | Silicon nitride | 2. | Heating elements |
C. | Aluminium oxide | 3. | Pipes for conveying liquid metals |
D. | Silicon carbide | 4. | Drawing dies |
Codes:
A)
A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2 done
clear
B)
A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 done
clear
C)
A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1 done
clear
D)
A\[\to \]4, B\[\to \]3, C\[\to \]1, D\[\to \]2 done
clear
View Solution play_arrow
-
question_answer84)
Heating the hypo-eutectoid steels to \[30{}^\circ C\] above the upper critical temperature line, soaking at the temperature and then cooling slowly to room temperature to form a pearlite and ferrite structure, is known as;
A)
Hardening done
clear
B)
Normalizing done
clear
C)
Tempering done
clear
D)
Annealing done
clear
View Solution play_arrow
-
question_answer85)
In a eutectic system, two elements are completely:
A)
Insoluble in solid and liquid state done
clear
B)
Soluble in liquid state done
clear
C)
Soluble in solid state done
clear
D)
Insoluble in liquid state. done
clear
View Solution play_arrow
-
question_answer86)
Cast iron is used for machine beds because of its high:
A)
Tensile strength done
clear
B)
Endurance strength done
clear
C)
Damping capacity done
clear
D)
Compressive strength. done
clear
View Solution play_arrow
-
question_answer87)
Cermets are:
A)
Metals for high temperature use with ceramic like properties done
clear
B)
Ceramics with metallic strength and luster done
clear
C)
Coated tool materials done
clear
D)
metal-ceramic composites. done
clear
View Solution play_arrow
-
question_answer88)
Percentages of various alloying elements present in different steel materials are given below:
1. % W ; 4% Cr ; 1% V; 5% Co ; 0.7% C |
2. 8% Mo; 4% Cr; 2% V; 6% W; 0.7% C |
3. 27% Cr ; 3% Ni; 5% Mo ; 0.25% C |
4. 18% Cr ; 8% Ni ; 0.15 C. |
Which of these relate to that of high speed steel?
A)
1 and 3 done
clear
B)
1 and 2 done
clear
C)
2 and 3 done
clear
D)
2 and 4 done
clear
View Solution play_arrow
-
question_answer89)
Pearlite consists of:
A)
6.67% C and 93.33% ferrite done
clear
B)
12% Fe and 87% cementite done
clear
C)
13% C and 87% ferrite done
clear
D)
13% cementite and 87% ferrite. done
clear
View Solution play_arrow
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question_answer90)
Addition of vanadium to steel results improvement of:
A)
Heat-treatability by quenching done
clear
B)
Hardenability done
clear
C)
Fatigue strength done
clear
D)
Resistance to oxidation at elevated temperature. done
clear
View Solution play_arrow
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question_answer91)
Atomic packing factor (APF) in the case of copper crystal is:
A)
0.52 done
clear
B)
0.68 done
clear
C)
0.74 done
clear
D)
1.633 done
clear
View Solution play_arrow
-
question_answer92)
During packing solidification, one liquid:
A)
Combines with one solid to form a second new solid done
clear
B)
Solidifies into two different solids done
clear
C)
Forms one solid done
clear
D)
Forms one solid and another liquid. done
clear
View Solution play_arrow
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question_answer93)
Martensite is a super-saturated solution of carbon in:
A)
Alpha iron done
clear
B)
beta iron done
clear
C)
Gamma iron done
clear
D)
delta iron. done
clear
View Solution play_arrow
-
question_answer94)
The correct sequence of creep deformation in a creep curve in order of their elongation is:
A)
Steady state, transient, accelerated done
clear
B)
Transient, steady state, accelerated done
clear
C)
Transient, accelerated, steady state done
clear
D)
Accelerated, steady state, transient done
clear
View Solution play_arrow
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question_answer95)
Nodular grey cast iron is obtained from the grey cast iron by adding a small amount of:
A)
Manganese done
clear
B)
Phosphorus done
clear
C)
Magnesium done
clear
D)
Chromium done
clear
View Solution play_arrow
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question_answer96)
Which one of the following pairs of axis lengths (a, b, c) and interaxial angles \[(\alpha ,\,\beta ,\,\gamma )\] represents the tetragonal crystal system?
A)
\[a=b=c;\,\alpha =\beta =\gamma =90{}^\circ \] done
clear
B)
\[a=b\ne c;\,\alpha =\beta =\gamma =90{}^\circ \] done
clear
C)
\[a\ne b\ne c;\,\alpha =\beta =\gamma =90{}^\circ \] done
clear
D)
\[a=b=c;\,\alpha =\beta =\gamma \ne 90{}^\circ \] done
clear
View Solution play_arrow
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question_answer97)
Consider the following quenching media:
1. Oil |
2. Water |
3. Water + NaOH |
4. Brine |
The correct sequence of these media in order of increasing hardness of steel undergoing heat treatment is:
A)
1, 3, 2, 4 done
clear
B)
2, 1, 3, 4 done
clear
C)
1, 2, 3, 4 done
clear
D)
4, 3, 2, 1 done
clear
View Solution play_arrow
-
question_answer98)
Which one of the following pairs is correctly matched?
A)
Solid solution strengthening - Increasing density of dislocations done
clear
B)
Dispersion hardening - Creating strained region in the crystal done
clear
C)
Strain-hardening - Creating particles to resist the movement of dislocations done
clear
D)
Precipitation-hardening - Creating particles by decreasing solubility of one phase in another done
clear
View Solution play_arrow
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question_answer99)
The alloy steel designated as 40 Cr 18 Ni 2 by Bureau of Indian Standards contains:
A)
0.4% C, 18% Cr and 2% Ni done
clear
B)
4.0% C, 1.8% Cr and 0.2% Ni done
clear
C)
0.4% C, 1.8% Cr and 0.2% Ni done
clear
D)
0.4% C, 1.8% Cr and 0.2 % Ni. done
clear
View Solution play_arrow
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question_answer100)
Tempering of quenched maritensitic steel is necessary to improve the:
A)
Hardness of the metal done
clear
B)
Surface texture of the metal done
clear
C)
Corrosion resistance of the metal done
clear
D)
Ductility of the metal. done
clear
View Solution play_arrow
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question_answer101)
The molecular weight of vinyl chloride is 62.5 Thus the molecular weight of a polyvinyl chloride with a degree of polymerisation of 20000 is:
A)
\[\frac{20000}{62.5}\] done
clear
B)
\[\frac{62.5}{20000}\] done
clear
C)
\[62.5\times 20000\] done
clear
D)
20000 done
clear
View Solution play_arrow
-
question_answer102)
Carbide-tipped cutting, tools are manufactured by powder-metal technology processes and have a composition of:
A)
Zirconium-Tungsten (35%-65%) done
clear
B)
Tungsten carbide-cobalt (90%-10%) done
clear
C)
Aluminium oxide-silica (70%-30%) done
clear
D)
Nickel-chromium tungsten (30%-15%55%) done
clear
View Solution play_arrow
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question_answer103)
Match List-I (Name of the element) with List-II (Crystal structure) and select the correct answer using the codes given below the lists:
List-I | List-II |
A. | Fluorspar | 1. | Body-centered cubic |
B. | Alpha-iron | 2. | Hexagonal close packed |
C. | Silver | 3. | Simple cubic |
D. | Zinc | 4. | Face-centered cubic |
Codes:
A)
A\[\to \]3, B\[\to \]2, C\[\to \]4, D\[\to \]1 done
clear
B)
A\[\to \]4, B\[\to \]1, C\[\to \]3, D\[\to \]2 done
clear
C)
A\[\to \]4, B\[\to \]2, C\[\to \]3, D\[\to \]1 done
clear
D)
A\[\to \]3, B\[\to \]1, C\[\to \]4, D\[\to \]2 done
clear
View Solution play_arrow
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question_answer104)
Which of the following factors govern solubility of two non-ferrous metals both inliquid state as well as in solid state?
1. Crystal structure |
2. Relative size factor |
3. Chemical-affinity factor |
4. Relative valence factor |
Select the correct answer using the codes giver below:
A)
1, 2 and 3 done
clear
B)
2, 3 and 4 done
clear
C)
1 and 4 done
clear
D)
3 and 4 done
clear
View Solution play_arrow
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question_answer105)
Which of the following are fabricated using| engineering plastics?
(1) Surface plate |
(2) Gears |
(3) Guide way for machine tools |
(4) Foundry patterns. |
Select the correct answer using the codes given below: |
Codes:
A)
1, 2 and 3 done
clear
B)
1 done
clear
C)
2, 3 and 4 done
clear
D)
1, 2/3 and 4 done
clear
View Solution play_arrow
-
question_answer106)
Consider the following statements]
Poly-tetra-fluorothene is |
1. A thermoplastic material |
2. Having high friction coefficient |
3. A thermosetting material |
4. Having low friction coefficient |
5. An electric insulator |
6. Non sticking to surfaces. |
Which of the above statements are correct?
A)
1, 2 and 5 done
clear
B)
2, 3 and 6 done
clear
C)
3, 4 and 5 done
clear
D)
3, 2 and 5 done
clear
View Solution play_arrow
-
question_answer107)
Which of the following fibre materials are used for reinforcement in composite materials:
1. Glass |
2. Boron carbide |
3. Graphite |
Select the correct answer using the codes given below: |
Codes:
A)
1 and 2 done
clear
B)
1 and 3 done
clear
C)
2 and 3 done
clear
D)
1, 2 and 3 done
clear
View Solution play_arrow
-
question_answer108)
Match List-I (material) with List-II (application) and select the correct answer using the codes given below the list
List-I (Material) | List-II (Application) |
A. | Ceramics chemical | 1. | Construction of plants |
B. | Refractories | 2. | Columns and pillars |
C. | Stones | 3. | Lining of furnaces |
D. | High silica glass | 4. | Tiles |
Codes:
A)
A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 done
clear
B)
A\[\to \]2, B\[\to \]1, C\[\to \]4, D\[\to \]3 done
clear
C)
A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 done
clear
D)
A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 done
clear
View Solution play_arrow
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question_answer109)
A shop owner with an annual constant demand of 'A' units has ordering costs of Rs. 'P' per order and carrying costs Rs. 'l' T per unit per year. The economic order quantity for a purchasing model having no shortage may be determined from:
A)
\[\sqrt{\frac{24\,P}{Al}}\] done
clear
B)
\[\sqrt{\frac{24\,AP}{I}}\] done
clear
C)
\[\sqrt{\frac{2\,AP}{I}}\] done
clear
D)
\[\sqrt{\frac{2\,AI}{P}}\] done
clear
View Solution play_arrow
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question_answer110)
A furniture company is maintaining a constant work force which can produce 3000 tables per quarter. The annual demand is 12000 units and is distributed seasonally in accordance with the quarterly indexes \[{{Q}_{1}}=0.80,\] \[{{Q}_{2}}=1.40,\] \[{{Q}_{3}}=1.00\] and \[{{Q}_{4}}=0.80.\] Inventories are accumulated when demand is less than the capacity and are used up during periods of strong demand to supply the total demand. To take into account any seasonal demand the inventories on hand at the beginning of the first quarter should be at least:
A)
0 done
clear
B)
600 done
clear
C)
1200 done
clear
D)
2400 done
clear
View Solution play_arrow
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question_answer111)
Match List-I (Phase diagram) with List-II (Characteristic) and select the correct answer using the codes given below the lists:
List-I (Phase diagram) | List-II (Characteristic) |
A. | Isomorphous system | A. | One liquid decomposes into another liquid and solid |
B. | Eutectic system | B. | One liquid and another solid combine to form a new solid |
C. | Peritectic system | C. | Two metals are corn pletely soluble in liquid state and completely insoluble in solid slate |
D. | Monotectic system | D. | Two metals, soluble in solid and liquid state |
Codes:
A)
A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 done
clear
B)
A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 done
clear
C)
A\[\to \]2, B\[\to \]1, C\[\to \]4, D\[\to \]3 done
clear
D)
A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 done
clear
View Solution play_arrow
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question_answer112)
Economic Order Quantity is the quantity at which the cost of carrying is:
A)
Minimum done
clear
B)
Equal to the cost of ordering done
clear
C)
less than the cost of ordering done
clear
D)
Cost of over-stocking. done
clear
View Solution play_arrow
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question_answer113)
ABC analysis in materials managements is a method of classifying the inventories based on:
A)
The value of annual usage of the items done
clear
B)
Economic order quantity done
clear
C)
Volume of material consumption done
clear
D)
Quantity of materials used. done
clear
View Solution play_arrow
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question_answer114)
If the annual demand of an item becomes half, ordering cost double, holding cost one-fourth and the unit cost twice, then what is the ratio of the new EOQ and the earlier EOQ?
A)
\[\frac{1}{2}\] done
clear
B)
\[\frac{1}{\sqrt{2}}\] done
clear
C)
\[\sqrt{2}\] done
clear
D)
2 done
clear
View Solution play_arrow
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question_answer115)
In the ABC method of inventory control. Group A constitutes costly items. What is the usual percentage of such items of the total items?
A)
10 to 20% done
clear
B)
20 to 30% done
clear
C)
30 to 40% done
clear
D)
40 to 50% done
clear
View Solution play_arrow