Hydraulics and Fluid Mechanics MCQs | Page - 4

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M

Mr. Dubey • 52.26K Points
Coach 

Q. Capillary action is due to the

(A) Surface tension
(B) Cohesion of the liquid
(C) Adhesion of the liquid molecules and the molecules on the surface of a solid
(D) All of the above
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M

Mr. Dubey • 52.26K Points
Coach 

Q. The intensity of pressure on an immersed surface __________ with the increase in depth.

(A) Does not change
(B) Increases
(C) Decreases
(D) None of these
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M

Mr. Dubey • 52.26K Points
Coach 

Q. Which of the following statement is correct?

(A) In a compressible flow, the volume of the flowing liquid changes during the flow
(B) A flow, in which the volume of the flowing liquid does not change, is called incompressible flow
(C) When the particles rotate about their own axes while flowing, the flow is said to be rotational flow
(D) All of the above
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M

Mr. Dubey • 52.26K Points
Coach 

Q. A flow through a long pipe at constant rate is called

(A) Steady uniform flow
(B) Steady non-uniform flow
(C) Unsteady uniform flow
(D) Unsteady non-uniform flow
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M

Mr. Dubey • 52.26K Points
Coach 

Q. Choose the wrong statement

(A) Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force
(B) Viscosity is due primarily to interaction between fluid molecules
(C) Viscosity of liquids decreases with increase in temperature
(D) Viscosity of liquids is appreciably affected by change in pressure
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M

Mr. Dubey • 52.26K Points
Coach 

Q. The unit of dynamic viscosity in S.I. units is

(A) N-m/s2
(B) N-s/m2
(C) Poise
(D) Stoke
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M

Mr. Dubey • 52.26K Points
Coach 

Q. A perfect gas

(A) Has constant viscosity
(B) Has zero viscosity
(C) Is in compressible
(D) None of the above
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M

Mr. Dubey • 52.26K Points
Coach 

Q. In a free nappe,

(A) The pressure below the nappe is atmospheric
(B) The pressure below the nappe is negative
(C) The pressure above the nappe is atmospheric
(D) The pressure above the nappe is negative
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M

Mr. Dubey • 52.26K Points
Coach 

Q. In a static fluid

(A) Resistance to shear stress is small
(B) Fluid pressure is zero
(C) Linear deformation is small
(D) Only normal stresses can exist
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M

Mr. Dubey • 52.26K Points
Coach 

Q. One litre of water occupies a volume of

(A) 1000 cm3
(B) 250 cm3
(C) 500 cm3
(D) 100 cm3
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