Surge wave in a rectangular channel is an example of_________________?

A. 1. steady flow
B. 2. unsteady flow
C. 3. uniform flow
D. 4. non-uniform flow

The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is________________?

A. 1/3
B. 1/4
C. 1/2
D. 2/3

If the elevation of hydraulic grade line at the junction of three pipes is above the elevation of reservoirs B and C and below reservoir A, then the direction of flow will be___________________?

A. From reservoir a to reservoirs b and c
B. From reservoir b to reservoirs c and a
C. From reservoir c to reservoirs a and b
D. Unpredictable

The correct relationship among displacement thickness d, momentum thickness m and energy thickness e is_________________?

A. D > m > e
B. D > e > m
C. E > m > d
D. E > d > m

The boundary layer thickness at a distance of l m from the leading edge of a flat plate, kept at zero angle of incidence to the flow direction, is O.l cm. The velocity outside the boundary layer is 25 ml sec. The boundary layer thickness at a distance of 4 m is__________________?

A. 0.40 cm
B. 0.20 cm
C. 0.10 cm
D. 0.05 cm

Two pipes of same length and diameters d and 2d respectively are connected in series. The diameter of an equivalent pipe of same length is________________?

A. Less than d
B. Between d and 1.5 d
C. Between 1.5 d and 2d
D. Greater than 2d

The length of a pipe is 1 km and its diameter is 20 cm. If the diameter of an equivalent pipe is 40 cm, then its length is_____________________?

A. 32 km
B. 20 km
C. 8 km
D. 4 km

When time of closure tc = L/v0 (where L is length of pipe and v0 is speed of pressure wavE., the portion of pipe length subjected to maximum head is__________________?

A. L/4
B. L/3
C. L/2
D. L

A valve is suddenly closed in a water main in wl.ich the velocity is 1 m/sec and velocity of pressure wave is 981 m/ sec. The inertia head at the valve will be________________?

A. 1 m
B. 10m
C. 100m
D. None of the above

In series-pipe problems_______________?

A. The head loss is same through each pipe
B. The discharge is same through each pipe
C. A trial solution is not necessary
D. The discharge through each pipe is added to obtain total discharge