1000+ Fluid Mechanics Multiple Choice Questions and Answers Pdf - 1

Question: 1

The pressure coefficient is the ratio of pressure forces to

(A) inertial forces

(B) gravity forces

(C) viscous forces

(D) none of the above

Ans: A

inertial forces

Question: 2

A fluid is a substance that

(A) cannot be subjected to shear forces

(B) cannot remain at rest when subjected to a shearing stress

(C) has a viscosity that always decreases with temperature

(D) is essential incompressibility

Ans: B

cannot remain at rest when subjected to a shearing stress

Question: 3

In Euler's equations

(A) only force of compressibility is neglected

(B) forces of compressibility, turbulence and velocity are neglected

(C) both force of compressibility and force of turbulence are neglected

(D) no force is neglected

Ans: B

forces of compressibility, turbulence and velocity are neglected

Question: 4

Inclined manometer is used for precise measurement of small pressure in

(A) in low velocity water flow

(B) in high velocity water flow

(C) in high velocity gas flow

(D) low velocity gas flow

Ans: D

low velocity gas flow

Question: 5

Mass per unit volume is known as

(A) specific volume

(B) specific weight

(C) specific gravity

(D) density

Ans: D

density

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