Fluid Mechanics - Practice Test

[#451] Select the correct statement.

(A) The discharge through a venturimeter depends upon Δp only and is independent of orientation of the meter

(B) A venturimeter with a given gage difference discharges at a greater rate, when the flow is vertically downward through it, than when the flow is vertically upward

(C) For a given pressure difference, the discharge of gas is greater through a venturimeter, when compressibility is taken into account, than when it is neglected

(D) The overall pressure loss is the same in a given pipe line, whether a venturimeter or a nozzle with the same throat dia is used

Correct Answer

(A) The discharge through a venturimeter depends upon Δp only and is independent of orientation of the meter

[#452] For turbulent flow in smooth circular pipe, the velocity distribution is a function of the distance 'd' measured from the wall of the pipe and the friction velocity 'v', and it follows a __________ relationship.

(A) Logarithmic

(B) Linear

(C) Hyperbolic

(D) Parabolic

Correct Answer

(A) Logarithmic

[#453] The head developed by a centrifugal pump is largely determined by the

(A) Power of the pump

(B) Nature of the liquid being pumped

(C) Angle of the vanes and the speed of the tip of the impeller

(D) Vapour pressure of the liquid

Correct Answer

(C) Angle of the vanes and the speed of the tip of the impeller

[#454] Cavitation occurs in a centrifugal pump when the suction pressure is

(A) Less than the vapour pressure of the liquid at that temperature

(B) Greater than the vapour pressure of the liquid at that temperature

(C) Equal to the vapour pressure

(D) Equal to the developed head

Correct Answer

(A) Less than the vapour pressure of the liquid at that temperature

[#455] Draining of shallow pits or sump is done by a sump pump, which is a __________ pump.

(A) Single stage vertical

(B) Centrifugal

(C) Plunger

(D) Diffuser

Correct Answer

(A) Single stage vertical

Fluid Mechanics - Study Mode

[#451] Select the correct statement.

Correct Answer

[#452] For turbulent flow in smooth circular pipe, the velocity distribution is a function of the distance 'd' measured from the wall of the pipe and the friction velocity 'v', and it follows a __________ relationship.

Correct Answer

[#453] The head developed by a centrifugal pump is largely determined by the

Correct Answer

[#454] Cavitation occurs in a centrifugal pump when the suction pressure is

Correct Answer

[#455] Draining of shallow pits or sump is done by a sump pump, which is a __________ pump.

Correct Answer