Related Questions

When the back pressure of a nozzle is below the designed value of pressure at exit of nozzle, the nozzle is said to be
A Choked
B Under-damping
C Over-damping
D None of these
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
When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle.
A Increases
B Decreases
C Remain same
D None of these
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 loss of head at exit of a pipe is (where v = Velocity of liquid in the pipe)
A $$\frac{{{{\text{v}}^2}}}{{2{\text{g}}}}$$
B $$\frac{{0.5{{\text{v}}^2}}}{{2{\text{g}}}}$$
C $$\frac{{0.375{{\text{v}}^2}}}{{2{\text{g}}}}$$
D $$\frac{{0.75{{\text{v}}^2}}}{{2{\text{g}}}}$$
The energy loss in flow through ven-turimeter is less than that through flow nozzle, because in case of a flow nozzle, the
A Length is shorter
B Throat diameter is more
C Sudden expansion of flow in the downstream occurs
D Distance between the throat and the inlet is more
One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in :
A 81 min
B 108 min
C 144 min
D 192 min

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