Fluid Mechanics and Hydraulics Machines (3141906) MCQ

MCQs of Impact of Jet and Hydraulic Turbines

MCQ No - 1

The force exerted (in newton) by a jet of water impinging normally on a fixed plate is

(A) ρaV2
(B) ρaV
(C) ρaV22
(D) ρaV2

D
MCQ No - 2

The force exerted by a jet of water (in a direction normal to flow) impinging on a fixed plate inclined at an angle θ with the jet is

(A) ρaV2×sinθ
(B) ρaV×sinθ
(C) ρaV22×sin2θ
(D) ρaV2×sinθ

C
MCQ No - 3

The force exerted by a jet of water impinging normally on a plate which due to the impact of jet, moves in the direction of jet with velocity u is

(A) ρaV-u2
(B) ρaV-u
(C) ρaV-u22
(D) ρaV-u2

D
MCQ No - 4

The ration of the normal force of a jet of water on a plane inclined at an angle of 30° as compared to that when the plate is normal to jet, is

(A) 12
(B) 12
(C) 1
(D) 2

B
MCQ No - 5

A jet of water is striking at the centre of a curved vane moving with a uniform velocity in the direction of the jet. For the maximum efficiency, the vane velocity is …………. of the jet velocity.

(A) one-half
(B) one-third
(C) two-third
(D) three-fourth

B