Fluid Mechanics - Practice Test

[#116] The ratio of the wall drag to the form drag in the Stoke's law range (for motion of spherical particles in a stationary fluid) is

(A) 0.5

(B) 1

(C) 2

(D) 0.33

Correct Answer

(C) 2

[#117] Cocks are used to control

(A) Water

(B) Any liquid

(C) Solids

(D) None of these

Correct Answer

(B) Any liquid

[#118] An ideal fluid is

(A) Frictionless & incompressible

(B) One, which obeys Newton's law of viscosity

(C) Highly viscous

(D) None of these

(E) Non-viscous

(F) Incompressible

(G) Both A & B

(H) Neither A & B

Correct Answer

(A) Frictionless & incompressible
(G) Both A & B

[#119] An ideal nozzle design aims at

(A) Minimising wall friction

(B) Suppressing boundary layer separation

(C) Both A & B

(D) Neither A nor B

Correct Answer

(C) Both A & B

[#120] Fluid resistance to shear depends upon its

(A) Rate of transfer of molecular momentum

(B) Cohesion

(C) Both A and B

(D) Neither A nor B

Correct Answer

(C) Both A and B

Fluid Mechanics - Study Mode

[#116] The ratio of the wall drag to the form drag in the Stoke's law range (for motion of spherical particles in a stationary fluid) is

Correct Answer

[#117] Cocks are used to control

Correct Answer

[#118] An ideal fluid is

Correct Answer

[#119] An ideal nozzle design aims at

Correct Answer

[#120] Fluid resistance to shear depends upon its

Correct Answer