Railways Quantitative Aptitude Pipes & Cisterns Sample Paper

done Pipes and Cisterns Sample Test Paper-11 Total Questions - 20    [Download]

• question_answer1)
  Three pumps working 8 hours a day can empty a tank in 2 day. How many hours a day must 4 pumps work to empty (he task in 1 day.
  A)
   10 hours          
  done clear
  B)
   12 hours
  done clear
  C)
   8 hours
  done clear
  D)
   none of these
  done clear
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• question_answer2)
  Two pipes can fill a cistern in 6 minutes and 7 minutes respectively. Both the pipes are opened alternatively for 1 minute each. In what time will they fill the cistern?
  A)
   6 Minutes
  done clear
  B)
   \[6\frac{2}{3}\] Minutes
  done clear
  C)
   \[6\frac{3}{7}\] Minutes
  done clear
  D)
   \[3\frac{1}{2}\] Minutes
  done clear
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• question_answer3)
  Bucket P has thrice the capacity as bucket Q. It takes 60 turns for bucket P to fill the empty drum. How many turns it will take for both the buckets P and Q, having each turn together to fill the empty drum?
  A)
   85                   
  done clear
  B)
   32
  done clear
  C)
   45                   
  done clear
  D)
   42
  done clear
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• question_answer4)
  Taps A and B fill a bucket in 12 and 15 minutes respectively. If both are opened and A is closed after 3 minutes, how much further time would it take for B to fill the bucket?
  A)
   7 min 30 sec    
  done clear
  B)
   8 min 5 sec
  done clear
  C)
   8 min 20 sec
  done clear
  D)
   8 min 15 sec.
  done clear
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• question_answer5)
  Two pipes A and B can fill a tank in 12 and 16 minutes respectively. Both pipes are opened together but 4 minutes before the tank is full, one pipe is closed. How much time will they take to fill the tank?
  A)
   \[9\frac{2}{7}\] Min     
  done clear
  B)
   \[9\frac{4}{7}\]Min
  done clear
  C)
   \[9\frac{1}{7}\] Min     
  done clear
  D)
   \[9\frac{3}{7}\] Min
  done clear
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• question_answer6)
  Three pipes A, B and C can fill a tank from empty to fall in 30 minutes, 20 minutes and 10 minutes respectively. When the tank is empty, all the three pipes are opened. A, B and C discharge chemical solutions P, Q and R respectively. What is the proportion of solution R in the liquid in the tank after 3 minutes?
  A)
   \[\frac{3}{11}\]            
  done clear
  B)
   \[\frac{6}{11}\]
  done clear
  C)
   \[\frac{4}{11}\]
  done clear
  D)
   \[\frac{7}{11}\]
  done clear
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• question_answer7)
  Two pipes A and B can fill a tank in 24 minutes and 32 minutes respectively. If both the pipes are opened simultaneously, after how much time B should be closed so that the tank is full in 18 minutes?
  A)
    8 min 
  done clear
  B)
   9 min
  done clear
  C)
   12 min
  done clear
  D)
   10 min.
  done clear
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• question_answer8)
  A tap can fill a tank in 6 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?
  A)
   3 hrs. 20 min    
  done clear
  B)
   3 hrs. 45 min
  done clear
  C)
   4 hrs. 15 min
  done clear
  D)
   4 hrs. 30 min.
  done clear
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• question_answer9)
  Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively If A is open all the time and B and C are opened for one hour each alternate then the tank will be full in
  A)
   5 hours
  done clear
  B)
   5 hrs. 30 min.
  done clear
  C)
   6 hrs. 15 min    
  done clear
  D)
   7 hours
  done clear
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• question_answer10)
  The diameter of three pipes are 1 cm, \[1\frac{1}{3}\] cm and 2 cm respectively. The quantity of water flowing through a pipe varies directly as the square of its diameter. If the pipe with 2 cm diameter can fill a tank in 61 minutes, in what time will all the three pipes together fill the tank?
  A)
   36 min
  done clear
  B)
   32 min
  done clear
  C)
   28 min
  done clear
  D)
   40 min.
  done clear
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• question_answer11)
  Two pipes A and B can fill a cistern in 10 and 15 minutes respectively, but an empty pipe C can empty it in 5 minutes. The pipes A and B are kept open for 4 minutes and the emptying pipe C also opened, hi what time is the cistern emptied?
  A)
   10 minutes       
  done clear
  B)
   16 minutes
  done clear
  C)
   20 minutes       
  done clear
  D)
   22 minutes.
  done clear
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• question_answer12)
  Three pipes A, B and C can fill a tank in 6 minutes, 8 minutes and 12 minutes, respectively. The pipe C is closed 6 minutes before the tank is filled. In what time will the tank be full?
  A)
   4 min  
  done clear
  B)
   6 min
  done clear
  C)
   5 min  
  done clear
  D)
   Data inadequate
  done clear
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• question_answer13)
  4 pipes can fill a reservoir in 15, 20, 30 and 60 hours respectively. The first was opened at 6 am, second at 7 am third at 8 am and fourth at 9 am. When will the reservoir be full?
  A)
   11 am 
  done clear
  B)
   12 pm
  done clear
  C)
   12.30 pm         
  done clear
  D)
   1.00 pm
  done clear
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• question_answer14)
  Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in :
  A)
   \[1\frac{13}{17}\] Hours
  done clear
  B)
   \[2\frac{8}{11}\]Hours
  done clear
  C)
   \[3\frac{9}{17}\] Hours 
  done clear
  D)
   \[4\frac{1}{2}\] Hours
  done clear
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• question_answer15)
  Three fill pipes A, B and C can fill separately a cistern in 3, 4 and 6 minutes respectively. A was opened first. After 1 minute, B was opened and after 2 minutes from the start of A, C was also opened. Find the time when the cistern will be full?
  A)
   \[2\frac{1}{9}\] Min     
  done clear
  B)
   \[4\frac{1}{2}\] min
  done clear
  C)
   \[3\frac{3}{4}\] Min     
  done clear
  D)
   None of these
  done clear
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• question_answer16)
  12 buckets of water fill a tank when the capacity of each tank is 13.5 litres. How many buckets will be needed to fill the same tank, if the capacity of each bucket is 9 litres?
  A)
    8                   
  done clear
  B)
   15
  done clear
  C)
   16                   
  done clear
  D)
   18
  done clear
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• question_answer17)
  Water flows at 3 metres per sec through a pipe of radius 4 cm. How many hours will it take to fill a tank 40 metres long, 30 metres broad and 8 metres deep, if the pipe remains full?
  A)
   176.6 hours
  done clear
  B)
   120 hours
  done clear
  C)
   135.5 hours
  done clear
  D)
   none of these
  done clear
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• question_answer18)
  A, B and C are three pipes connected to a tank. A and B together fill the tank in 6 hrs. B and C together fill the tank in 10 hrs. A and C together fill the tank in \[7{\scriptstyle{}^{1}/{}_{2}}\] his. In how much time will A, B and C fill the tank separately?
  A)
   10 hrs. 
  done clear
  B)
   15 hrs.
  done clear
  C)
   20 hrs. 
  done clear
  D)
   30 hrs.
  done clear
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• question_answer19)
  One tap can fill a cistern in 2 hours and another can empty the cistern in 3 hours. How long will they take to fill the cistern if both the taps are open?
  A)
   7 hours
  done clear
  B)
   6 hours
  done clear
  C)
   5 hours
  done clear
  D)
   8 hours
  done clear
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• question_answer20)
  A cistern has a leak which would empty it in 8 hours. A tap is turned on which admits 6 litres a minute into the cistern and it is now emptied in 12 hours. The cistern can hold
  A)
   7860 litres        
  done clear
  B)
   6840 litres
  done clear
  C)
   8640 litres        
  done clear
  D)
   8840 litres
  done clear
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