#### Hydraulics

1

Discharge with velocity of approach, over a rectangular weir is

A. 2/3 C_d xx L xx 2g [(H + ha)^(3//2) + ha^ (3//2)]
B. 2/3 C_d xx L xx 2g [(H + ha)^(3//2) - ha^ (3//2)]
C. 2/3 C_d xx L xx 2g [(H - ha)^(3//2) + ha^ (3//2)]
D. 2/3 C_d xx L xx 2g [(H - ha)^(3//2) - ha^ (3//2)]

2

Specific energy of a flowing fluid per unit weight is

A. P/W + (V^2)/(2g)
B. P/W + (V)/(2g)
C.  (V^2)/(2g)+ h
D. P/W + (V^2)/(2g) + h

3
The minimum specific energy of flow of water in open channel is : (where hc is the critical depth)
A. h_c
B. h_c/2
C. (3h_c)/(2)
D. 2/3 h_c

4
The pressure variation along the radial direction for vortex flow along a horizontal plane is related by
A. (partial rho)/(partial r) = - rho V^2/r
B. (partial rho)/(partial r) = rho V^2/r
C. (partial rho)/(partial r) = rho V/r^2
D. (partial rho)/(partial r) = rho V^2/r^2

5

If L, D and f are the length, diameter and coefficient of friction of a pipe, the ratio of the areas of the pipe A and nozzle a, to transmit maximum power, is

A. sqrt((8fL^2)/D))
B. sqrt((8L^2f)/D))
C. sqrt((8f//L)/D))
D. sqrt((8fL)/D))