Fluid Mechanics MCQ Questions Answers Civil Engineering

Fluid Mechanics Civil Engineering MCQ Questions Answers

Fluid mechanics is a fascinating branch of physics and engineering that deals with the behavior of fluids (liquids, gases, and plasmas) and their interactions with forces and the environment. It plays a pivotal role in various fields, from designing efficient transportation systems to understanding natural phenomena like ocean currents and atmospheric dynamics. To delve deeper into the realm of fluid mechanics, one must not only grasp its theoretical concepts but also apply them to practical scenarios. Multiple Choice Questions (MCQs) provide an excellent way to test and reinforce one’s understanding of fluid mechanics. In this article, we’ll explore a set of fluid mechanics MCQs along with their answers to sharpen your knowledge in this dynamic field.

1) The liquid used in manometers should have

a) low density

b) high density

c) low surface tension

d) high surface tension

View Answer
Option – a)

2) A Newtonian fluid is defined as the fluid which

(a) is highly viscous

(b) is compressible and non-viscous

(c) is incompressible and viscous

(d) obeys Newton’s law of viscocity

View Answer
Option – d)

3) An ideal fluid is one which is

a) compressible

b) elastic and viscous

c) non-viscous and incompressible

d) of low density

View Answer
Option – c)

4) The line that connects all particles passing through a point is known as

(a) streamline

(b) pathline

(c) streakline

(d) all the above.

View Answer
Option – c)

5) For laminar flow in circular pipes, the Darcy’s friction factor f is equal to

a) 16/Re

b) 32/Re

c) 64/Re

d) None of these

View Answer
Option – c)

6) Gauge pressure is

(a) pressure measured above complete vacuum

(b) absolute pressure + local atmospheric pressure

(c) absolute pressure – local atmospheric pressure

(d) none of the above.

View Answer
Option – c)

7) The pressure, in meters of oil (sp.gr.0.8) equivalent to 80 m of water is

a) 64

b) 80

c) 100

d) 88

View Answer
Option – c)

8) A venturimeter is having a exit cone of

(a) diverging angle 20°

(b) diverging angle of 5° to 7°

(c) converging angle of 20°

(d) converging angle of 5° to 7°

View Answer
Option – b)

9) Pressure of 200 kPa is equivalent to a head of h metres of carbon tetrachloride of relative density 1.59 where h is equal to

a) 11.62

b) 11.92

c) 12.82

d) 13.12

View Answer
Option – c)

10) The nominal thickness of boundary layer may be considered the distance between the solid

boundary and the layer where the velocity of fluid particles is ______ of free stream velocity.

(a) 90%

(b) 95%

(c) 99%

(d) 100%

View Answer
Option – c)