A) \[\frac{\partial v}{\partial x}\] done clear
B) \[-\frac{\partial v}{\partial x}\] done clear
C) \[\frac{\partial v}{\partial y}\] done clear
D) \[-\frac{\partial v}{\partial y}\] done clear
View Solution play_arrowA) \[u\frac{\partial u}{\partial x}+v\frac{\partial u}{\partial y}\] done clear
B) \[u\frac{\partial u}{\partial x}+v\frac{\partial u}{\partial y}\] done clear
C) \[u\frac{\partial v}{\partial x}+v\frac{\partial u}{\partial y}\] done clear
D) \[v\frac{\partial u}{\partial x}+u\frac{\partial u}{\partial y}\] done clear
View Solution play_arrowA) Steady flow done clear
B) Irrigational flow done clear
C) Invescid flow done clear
D) Incompressible flow done clear
View Solution play_arrowquestion_answer4) A streamline and an equipotential line in a flow field
A) are parallel to each other done clear
B) are perpendicular to each other done clear
C) intersect at an acute angle done clear
D) are identical done clear
View Solution play_arrowquestion_answer5) Biot number signifies the ratio of
A) convective resistance in the fluid to conductive resistance in the solid done clear
B) conductive resistance in the solid convective resistance in the fluid done clear
C) inertia force to viscous force in the fluid done clear
D) buoyancy force to viscous force in the fluid done clear
View Solution play_arrowquestion_answer6) A flow field which has only convective acceleration is
A) a steady uniform flow done clear
B) an unsteady uniform flow done clear
C) a steady non-uniform flow done clear
D) an unsteady non-uniform flow done clear
View Solution play_arrowA) linear relation done clear
B) hyperbolic relation done clear
C) parabolic relation done clear
D) manner first slowly and then steeply done clear
View Solution play_arrowA) steady flow done clear
B) uniform flow done clear
C) laminar flow done clear
D) rotational flow done clear
View Solution play_arrowquestion_answer9) Buoyant force is
A) resultant of up thrust and gravity forces acting on the body done clear
B) resultant force on the body due to the fluid surrounding it done clear
C) resultant of static weight of body and dynamic thrust of fluid done clear
D) equal to the volume of liquid displaced by the body done clear
View Solution play_arrowquestion_answer10) The capillary rise in a narrow two-dimensional slit of width 'w' is
A) half of that in a capillary tube of diameter 'w' done clear
B) two-third of that in a capillary tube of diameter ?w? done clear
C) one-third of that in a capillary tube of diameter 'w' done clear
D) one-fourth of that in a capillary tube of diameter 'w' done clear
View Solution play_arrowquestion_answer11) Which of the following flow measurement device is independent of density?
A) Electro ? magnetic flow meter done clear
B) Orifice plate done clear
C) Turbine meter done clear
D) Venturi-meter done clear
View Solution play_arrowquestion_answer12) The cause of turbulence in fluid flow may be
A) high Reynold number done clear
B) abrupt discontinuity in velocity distribution done clear
C) critical Reynold number done clear
D) existence of velocity gradient without abrupt discontinuity done clear
View Solution play_arrowA) Bernoulli's equation done clear
B) Cauchy Riemann's equation done clear
C) Euler's equation done clear
D) Laplace equation. done clear
View Solution play_arrowquestion_answer14) A control volume refers to
A) a closed system done clear
B) a specified mass done clear
C) an isolated system done clear
D) a fixed region in space done clear
View Solution play_arrowquestion_answer15) Pseudo plastic is a liquid for which
A) dynamic viscosity decreases as the rate of shear increases done clear
B) Newton's law of viscosity holds good done clear
C) dynamic viscosity increases as the rate of shear increases done clear
D) dynamic viscosity increases with the time for which shearing forces are applied. done clear
View Solution play_arrowquestion_answer16) An ideal fluid is defined as the fluid which:
A) is compressible done clear
B) is in compressible done clear
C) is in compressible and non-viscous done clear
D) has negligible surface tension done clear
View Solution play_arrowquestion_answer17) Which of the following is the unit of kinematic viscosity?
A) \[N-S/{{m}^{2}}\] done clear
B) \[{{m}^{2}}/s\] done clear
C) \[kg/s{{m}^{2}}\] done clear
D) \[m/kg-s\] done clear
View Solution play_arrowquestion_answer18) Poise is the unit of:
A) dynamic viscosity done clear
B) kinematic viscosity done clear
C) mass density done clear
D) velocity gradient done clear
View Solution play_arrowquestion_answer19) Surface tension is a phenomenon because of:
A) viscous forces only done clear
B) Adhesion between liquid and solid molecules done clear
C) Difference in magnitude between the forces due to adhesin and cohesion done clear
D) cohesion only done clear
View Solution play_arrowquestion_answer20) In case of a static fluid:
A) only normal stresses can exist done clear
B) linear deformation is small done clear
C) fluid pressure is zero done clear
D) resistance to shear stress is small done clear
View Solution play_arrowquestion_answer21) Gauge pressure is equal to :
A) absolute pressure + atmospheric pressure done clear
B) absolute pressure \[-\] atmospheric pressure done clear
C) atmospheric pressure \[-\] absolute pressure done clear
D) atmospheric pressure \[-\] vaccum done clear
View Solution play_arrowquestion_answer22) Compressibility\[(\beta )\]is equal to: (If k is bulk modulus)
A) \[\beta =\frac{1}{k}\] done clear
B) \[\beta =k\] done clear
C) \[\beta =\frac{1}{{{k}^{2}}}\] done clear
D) \[\beta ={{k}^{2}}\] done clear
View Solution play_arrowquestion_answer23) Kinematic viscosity is equal to:
A) Dynamic viscosity \[\times \] density done clear
B) \[\frac{\text{Dynamic}\,\,\text{viscosity}}{\text{Density}}\] done clear
C) \[\frac{\text{Density}}{\text{Dynamic}\,\,\text{viscosity}}\] done clear
D) \[\frac{\text{1}}{\text{Dynamic}\,\,\text{viscosity}\,\,\text{Density}}\] done clear
View Solution play_arrowquestion_answer24) Void ratio does not depend upon :
A) Liquid limit done clear
B) Volume done clear
C) Bulk volume done clear
D) Porosity done clear
View Solution play_arrowquestion_answer25) The difference of pressure between inside and outside of a liquid drop is
A) \[\Delta P=T\times r\] done clear
B) \[\Delta P=\frac{T}{r}\] done clear
C) \[\Delta P=\frac{T}{2r}\] done clear
D) \[\Delta P=\frac{2T}{r}\] done clear
View Solution play_arrowquestion_answer26) Falling drops of water become spherical in shape due to the property of:
A) adhesion done clear
B) cohesion done clear
C) surface tension done clear
D) viscosity done clear
View Solution play_arrowquestion_answer27) Capillary action is due to:
A) viscosity of liquid done clear
B) cohesion of liquid particles done clear
C) surface tension done clear
D) None of these done clear
View Solution play_arrowA) fluid density done clear
B) fluid specific weight done clear
C) fluid weight done clear
D) fluid specific gravity done clear
View Solution play_arrowquestion_answer29) A piezometer tube is used for the purpose of measurement of:
A) Low pressure done clear
B) High pressure done clear
C) Moderate pressure done clear
D) Vacuum pressure done clear
View Solution play_arrowquestion_answer30) The volumetric change of the fluid caused by a resistance is known as:
A) volumetric strain done clear
B) volumetric index done clear
C) compressibility done clear
D) stress done clear
View Solution play_arrowquestion_answer31) The desirable properties for any practical fluids are:
A) should be viscous done clear
B) should posses surface tension done clear
C) should be compressible done clear
D) All of the above done clear
View Solution play_arrowquestion_answer32) Resultant force on a floating body will act:
A) vertically upwards through meta centre done clear
B) vertically down wards through metal centre done clear
C) vertically upwards through centre of buoyancy done clear
D) vertically downwards through centre of buoyancy done clear
View Solution play_arrowquestion_answer33) The centre of pressure of a plane submerged surface :
A) should coincide with centroid of surface done clear
B) should coincide with centroid of pressure prism done clear
C) may be above or below centroid done clear
D) cannot be above mentioned done clear
View Solution play_arrowquestion_answer34) In a turbulent flow through a pipe, the shear stress is :
A) Maximum at centre and decreased linearly towards the wall done clear
B) Maximum at centre and decreased logarithmically towards the wall done clear
C) Maximum midway between the centre ? line and the wall done clear
D) Maximum at the wall and decreases linearly to zero at the centre done clear
View Solution play_arrowquestion_answer35) The shear stress in a turbulent pipe flow:
A) varies parabolic ally with radius done clear
B) is constant over the pipe radius done clear
C) is zero at centre and increases linearly to the wall done clear
D) None of these done clear
View Solution play_arrowA) Three ? dimensional flow done clear
B) Two ? dimensional flow done clear
C) One ? dimensional flow done clear
D) None of these done clear
View Solution play_arrowquestion_answer37) The most essential feature of the turbulent flow is:
A) Large discharge done clear
B) Small discharge done clear
C) High velocity done clear
D) Velocity and pressure at a point shows irregular fluctuations at high frequency done clear
View Solution play_arrowquestion_answer38) Ratio of inertia force to surface tension is termed as:
A) Mach number done clear
B) Froude number done clear
C) Reynolds?s Number done clear
D) Weber's number done clear
View Solution play_arrowA) kinetic energy done clear
B) Pressure energy done clear
C) kinetic energy/unit weight done clear
D) None of these done clear
View Solution play_arrowquestion_answer40) A pivot tube is used for measuring:
A) pressure of flow done clear
B) velocity of flow done clear
C) flow rate done clear
D) total energy done clear
View Solution play_arrowquestion_answer41) Venturimeter is used to measure flow of fluids in pipes when pipe is;
A) horizontal done clear
B) vertical, flow downwards done clear
C) vertical, flow upwards done clear
D) In any position done clear
View Solution play_arrowA) venturimeter done clear
B) orifice plate done clear
C) Pivot tude done clear
D) All of these done clear
View Solution play_arrowquestion_answer43) Flow through a supersonic nozzle is an example of:
A) Isolated system done clear
B) open system done clear
C) closed system done clear
D) insulated system done clear
View Solution play_arrowquestion_answer44) In the Navier, stoke equation, the forces considered are:
A) Gravity, pressure and viscous done clear
B) Pressure, viscous and turbulence done clear
C) Gravity, pressure, and turbulence done clear
D) Pressure, gravity, turbulence and viscous done clear
View Solution play_arrowquestion_answer45) Energy loss in flow through nozzle as compared to ventun meter is:
A) Same done clear
B) More done clear
C) Less done clear
D) Unpredictable done clear
View Solution play_arrowquestion_answer46) Which of the following parameter is measured using orifices?
A) Velocity done clear
B) Pressure done clear
C) Flow rate done clear
D) Both pressure and velocity done clear
View Solution play_arrowquestion_answer47) The surge tanks are used in a pipeline to:
A) reduce frictional loss in pipe done clear
B) ensure uniform flow in pipe done clear
C) relieve the pressure due to water hammer done clear
D) reduce cavitation done clear
View Solution play_arrowquestion_answer48) An impulse turbine is used for:
A) Low head of water done clear
B) High head of water done clear
C) Medium head of water done clear
D) High discharge done clear
View Solution play_arrowquestion_answer49) The function of hydraulic turbine is to convert water energy into:
A) Heat energy done clear
B) Electrical energy done clear
C) Atomic energy done clear
D) Mechanical energy done clear
View Solution play_arrowquestion_answer50) The degree of reaction of a kaplan turbine is :
A) equal to 1 done clear
B) equal to 180 done clear
C) Greater than zero but less than 1 11 done clear
D) Greater than 1/2 but less than 1 done clear
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