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
With increase in the schedule number of a pipe of a particular nominal size, the
A Wall thickness also increases
B I.D. of the pipe decreases
C O.D. of the pipe remains constant
D All of the above
Schedule number of a pipe, which is a measure of its wall thickness, is given by
A 1000 P'/S
B 100 P'/S
C 1000 S/P'
D 10000 P'/S
A ladder is resting against a vertical wall and its bottom is 2.5 m away from the wall. If it slips 0.8 m down the wall, then its bottom will move away from the wall by 1.4 m. What is the length of the ladder?
A 6.2 m
B 6.5 m
C 6.8 m
D \7.5 m
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
If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor downstream of the crest-wall, is given by the equation
A $${\text{t}} = \frac{{{\text{h}} + 1}}{{{\text{G}} + {\text{t}}}}$$
B $${\text{t}} = \frac{{{\text{h}} - 1}}{{{\text{G}} + {\text{t}}}}$$
C $${\text{t}} = \frac{{{\text{h}} - 1}}{{{\text{G}} - {\text{t}}}}$$
D $${\text{t}} = \frac{{{\text{h}} + 1}}{{\text{G}}}$$
What is the ratio of displacement thickness to nominal thickness for a linear distribution of velocity in the boundary layer on a flat plate?
A 0.5
B 1
C 1.5
D 2
The nominal thickness of one brick wall in mm, is
A 90 mm
B 150 mm
C 190 mm
D 200 mm
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

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