Hydraulic Fluid Mechanics MCQs

Question 1

The function of surge tank is to

Accepted Answer

Relieve the pipe line of excessive pressure produced by water hammer

Answer

Smoothen flow

Answer

Act as reservoir for emergency conditions

Answer

Avoid reverse flow

Question 2

The discharge of broad crested weir is maximum if the head of water on the downstream side of weir as compared to the head on the upstream side of the weir is

Accepted Answer

Two-third

Answer

One-half

Answer

One-third

Answer

Three-fourth

Question 3

The cipoletti weir functions as if it were a following notch without end contractions

Accepted Answer

Rectangular notch

Answer

Triangular notch

Answer

Trapezoidal notch

Answer

Parallelogram notch

Question 4

Maximum discharge over broad crested weir is

Accepted Answer

1.71 Cd L.H312

Answer

1.71 Cd L.H5/2

Answer

1.71 Cd L.HIJ2

Answer

0.384 Cd L.HY2

Question 5

Cipoletti notch is designed as trapezoid with its sides sloping at 1 horizontal and

Accepted Answer

4 vertical

Answer

1 vertical

Answer

2 vertical 179

Answer

3 vertical

Question 6

In series-pipe applications

Accepted Answer

The head losses through each pipe are added to obtain the total head loss

Answer

The head loss is same through each pipe

Answer

Friction factors are assumed for each pipe

Answer

Flow increases

Question 7

Choking in pipe flow implies

Accepted Answer

The specified mass flow can't occur

Answer

No flow occurs

Answer

Negative flow takes place due to water hammer

Answer

Valve in pipline is closed

Question 8

In the case of flow through parallel pipes

Accepted Answer

Head loss in each pipe is same

Answer

Flow in each pipe is same

Answer

Head loss depends upon flow conditions

Answer

Total head loss is sum of the head losses in individual pipes

Question 9

For a laminar flow

Accepted Answer

Newton's law of viscosity is of importance

Answer

Flow occurs in a zig zag way

Answer

Reynolds number lies between 2000 to 3000 for pipes

Answer

Pipe losses are major considerations