Explore topic-wise MCQs in Fluid Mechanics.

This section includes 26 Mcqs, each offering curated multiple-choice questions to sharpen your Fluid Mechanics knowledge and support exam preparation. Choose a topic below to get started.

1.

Which hydraulic jump occurs in our sink?

A. Inertial forces hydraulic jump
B. Shallow fluid hydraulic jump
C. Critical depth jump
D. Hydraulic radius expands
Answer» C. Critical depth jump
Discussion
2.

During a subcritical flow, what is the value of Froude’s number?

A. Zero
B. Greater than one
C. Less than one
D. Not defined
Answer» D. Not defined
Discussion
3.

Fluid flow after the hydraulic jump is ______

A. Normal
B. Rough
C. Smooth
D. Zero
Answer» C. Smooth
Discussion
4.

Fluid flow before the hydraulic jump is ______

A. Normal
B. Rough
C. Smooth
D. Zero
Answer» D. Zero
Discussion
5.

Fluid height after the hydraulic jump is ________

A. Normal
B. Low
C. High
D. Zero
Answer» D. Zero
Discussion
6.

For what value of Froude number the jump is steady jump?

A. F1 = 1
B. F1 = 1.7 to 4.5
C. F1 = 4.5 to 9
D. F1 = 9
Answer» D. F1 = 9
Discussion
7.

In what limits the slopes of the glacis are provided?

A. 2:1 to 5:1
B. 3:1 to 4:1
C. 5:2 to 6:2
D. 4:3 to 7:5
Answer» B. 3:1 to 4:1
Discussion
8.

The length of the jump is how times the height of the jump?

A. 3
B. 5
C. 2
D. 4
Answer» C. 2
Discussion
9.

On which surface the energy dissipation is less efficient?

A. Horizontal Bed
B. Freeboard
C. Level Floor
D. Sloping Glacis
Answer» E.
Discussion
10.

Depending upon the Froude number, into how many groups the jumps are classified?

A. 8
B. 6
C. 7
D. 4
Answer» C. 7
Discussion
11.

How many assumptions are made for the derivation of momentum formula?

A. 6
B. 3
C. 4
D. 5
Answer» D. 5
Discussion
12.

For the value of Froude number 9 the jump is said to be strong jump.

A. False
B. True
Answer» C.
Discussion
13.

For what limits of Froude number, the jump is said to be weak jump?

A. 1.1 to 2.4
B. 1.9 to 2.9
C. 1.5 to 2.2
D. 1.7 to 2.5
Answer» E.
Discussion
14.

When the change in depth is large, then the jump is said to be direct jump.

A. True
B. False
Answer» B. False
Discussion
15.

When the depth is small, the name for the jump?

A. Undular Jump
B. Direct Jump
C. Strong Jump
D. Oscillating Jump
Answer» B. Direct Jump
Discussion
16.

FLUID_FLOW_BEFORE_THE_HYDRAULIC_JUMP_IS_______?$

A. Normal
B. Rough
C. Smooth
D. Zero
Answer» D. Zero
Discussion
17.

During a subcritical flow, what is the value of Froude’s number?$#

A. Zero
B. Greater than one
C. Less than one
D. Not defined
Answer» D. Not defined
Discussion
18.

Fluid_flow_after_the_hydraulic_jump_is_______$

A. Normal
B. Rough
C. Smooth
D. Zero
Answer» C. Smooth
Discussion
19.

Which_hydraulic_jump_occurs_in_our_sink?

A. Inertial forces hydraulic jump
B. Shallow fluid hydraulic jump
C. Critical depth jump
D. Hydraulic radius expands
Answer» C. Critical depth jump
Discussion
20.

Fluid height after the hydraulic jump is _______?

A. Normal
B. Low
C. High
D. Zero
Answer» D. Zero
Discussion
21.

Fluid height before the hydraulic jump is ________

A. Normal
B. Low
C. High
D. Zero
Answer» C. High
Discussion
22.

Fluid speed before the hydraulic jump is ________

A. Critical
B. Supercritical
C. Subcritical
D. Dynamic
Answer» C. Subcritical
Discussion
23.

Open channel flow takes place _______

A. On a free surface
B. In the pipe
C. Within a cylindrical depth
D. In a pump
Answer» B. In the pipe
Discussion
24.

In which case is the hydraulic jump not possible?

A. Initial speed > critical speed
B. Initial speed < critical speed
C. Initial speed = critical speed
D. Independent
Answer» C. Initial speed = critical speed
Discussion
25.

Hydraulic jump depends upon

A. Temperature
B. Pressure
C. Initial fluid speed
D. Volumetric changes
Answer» D. Volumetric changes
Discussion
26.

Hydraulic jump is observed in _______

A. Closed channel flow
B. Open channel flow
C. Flow changes
D. Volumetric changes
Answer» C. Flow changes
Discussion