Related Questions

Nominal size of the discharge pipe of a pump is usually __________ the nominal size of the inlet pipe.
A Smaller than
B Larger than
C Same as
D Twice
A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same time during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is:
A 6 hours
B 10 hours
C 15 hours
D 30 hours
A pipe of 2 inch diameter fills a water tank in one hour. If the diameter of the pipe is 4 inch in what time will the pipe fill the same tank?
A 10 minutes
B 15 minutes
C 30 minutes
D 45 minutes
A pipe of 2 inch diameter fills a water tank in one hour . If the diameter of the pipe is 4 inch in what time will the pipe fill the same tank?
A 10 minutes
B 15 minutes
C 30 minutes
D 45 minutes
The pipe wall thickness is minimum for a pipe of given nominal size having schedule number
A 160
B 120
C 80
D 40
Pipe A alone can fill a tankin 8 hours .Pipe B can fill it in 6 hours . If both the pipes are operated and after 2 hours pipe A is closed, then the other pipe will fill the tank in.
A 6 hours
B 3 1/2 hours
C 4 hours
D 1 1/2 hours
A pipe fills a tank in P minuties and another pipe fills the tank in Q minutes. A different pipe makes the tank empty in R minutes. If all these three pipe are opened then in how many minutes the tank will be full?
A p+q-qpqr
B pq+pr-pqpqr
C pq+qr-prpqr
D pqrqr+pr-pq
A water tank with 64-gallon capacity is filled by pipe A and emptied by pipe B. If the rate of water flow through pipe A is 2 gallons per hour, how many gallons per hour should flow through pipe B so that when both pipes are open, the initially empty tank shold be full in exactly 96 hours?
A 3/8
B 4/3
C 2/3
D 8/3
Pipe A can fill an empty cistern in 4 hours while along with Pipe B it can fill it up in 3 hours. Only Pipe A is turned on for an hour after which Pipe B is also turned on. How much total time will it take to fill up the cistern?
A 3 hrs 20 min
B 3 hrs 25 min
C 3 hrs 15 min
D 3 hrs
The equivalent diameter for the annulus of a double pipe heat exchanger, whose inner pipe has fins on the outside is __________ compared to the same size pipes without fins.
A More
B Less
C Same
D Unpredictable

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