Fluid Mechanics MCQ Questions Answers Civil Engineering

Fluid Mechanics Civil Engineering MCQ Questions Answers

1) The liquid used in manometers should have

a) low density

b) high density

c) low surface tension

d) high surface tension

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

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

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.

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

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.

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

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°

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

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%