Fluid Mechanics MCQ Questions & Answers

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Each section contains 100 MCQs on Fluid Mechanics .

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

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

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

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Specific speed for a centrifugal pump is

A) $$\frac{{{\text{N}}\sqrt {\text{Q}} }}{{{{\text{H}}^{\frac{3}{4}}}}}$$ B) $$\frac{{{\text{N}}\sqrt {\text{Q}} }}{{{{\text{H}}^{\frac{2}{3}}}}}$$ C) $$\frac{{{\text{N}}\sqrt {\text{Q}} }}{{{{\text{H}}^{\frac{1}{4}}}}}$$ D) $$\frac{{{\text{N}}\sqrt {\text{Q}} }}{{\text{H}}}$$

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Venturimeters, orificemeters and nozzles are used to measure the fluid discharge from a pipeline. The average fluid velocity in a pipeline can be measured by a/an

A) Weir B) Hot wire anemometer C) Cup and vane aneometer D) None of these

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Which of the following is an undesirable property of a manometric liquid?

A) Non-sticky & non-corrosive nature B) High vapour pressure C) Low viscosity & surface tension D) Low co-efficient of thermal expansion

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Pick out the wrong statement.

A) Momentum transfer in laminar flow results from veclocity gradient B) A fluid in equilibrium is not free from shear stress C) The viscosity of a non-Newtonion fluid is a function of temperature only D) Both B and C

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Which of the following is used for pumping crude oil from oil well?

A) Single stage centrifugal pump B) Gear pump C) Screw pump D) Duplex/triplex reciprocating pump

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

When the head pumped against is less than the head of the fluid used for pumping, the usual device is a/an

A) Ejector B) Blower C) Injector D) Airlift

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

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Fluid Mechanics MCQ Questions & Answers | Chemical Engineering