1000+ Fluid Mechanics Question Bank with Answers Pdf - 1

Question: 1

The angle of contact between mercury and solid surface is

(A) 0°

(B) 45°

(C) 90°

(D) More than 90°

Ans: D

More than 90°

Question: 2

A submerged body is subjected to a buoyancy equal to the weight of the fluid displaced by it. This principle is known as

(A) Archimede's principle

(B) Bourden's principle

(C) Newton's principle

(D) None of the above

Ans: A

Archimede's principle

Question: 3

Venturimeter is a device based on

(A) Bernauli's principle

(B) Euler's equation

(C) Navier-Stokes equation

(D) Reynolds equation

Ans: A

Bernauli's principle

Question: 4

The most efficient theoretical section to get maximum discharge for a given cross section is

(A) circular

(B) trapezoidal

(C) rectangular

(D) triangular

Ans: A

circular

Question: 5

In a forced vertex motion, the velocity of flow is

(A) directly proportional to the square of its radial distance from the axis of rotation

(B) inversely proportional to its radial distance from the axis of rotation

(C) inversely proportional to its radial distance from the axis of rotation

(D) directly proportional to its radial distance from axis of rotation

Ans: D

directly proportional to its radial distance from axis of rotation

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