Fluid Mechanics MCQ Questions & Answers

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Each section contains 100 MCQs on Fluid Mechanics .

In which of the following body shapes, the pressure drag is large compared to the friction drag?

A) Stream line body B) Two dimensional body C) Bluff body D) None of these

Discuss

Answer & Solution

Answer: Option C

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

Which of the following denotes the effect of compressibility in fluid flow?

A) Weber number B) Mach number C) Euler number D) Reynolds number

Discuss

Answer & Solution

Answer: Option B

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

In the low Reynolds number region, the drag force on a sphere is proportional to

A) V B) V² C) V⁴ D) V^0.5

Discuss

Answer & Solution

Answer: Option A

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

Pick out the wrong statement:

A) The vacuum pressure is always the negative gauge pressure B) The pressure of the liquid measured by a piezometer tube is the gauge pressure C) Manometric liquid should have high surface tension D) The point at which the resultant pressure on an immersed surface acts, is known as the centre of gravity

Discuss

Answer & Solution

Answer: Option D

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

The ratio of average fluid velocity to the maximum velocity in case of laminar flow of a Newtonion fluid in a circular pipe is

A) 0.5 B) 1 C) 2 D) 0.66

Discuss

Answer & Solution

Answer: Option A

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

Power required for mixing Newtonion fluids is a function of the

A) Speed of impeller, diameter of impeller & viscosity B) Density & viscosity of fluid only C) Density of fluid, viscosity of fluid & impeller dia only D) None of these

Discuss

Answer & Solution

Answer: Option D

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

Nominal size of a pipe is an indication of its __________ diameter.

A) Inner B) Outer C) Approximate D) None of these

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Answer & Solution

Answer: Option C

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

For pumping slurry, one can use a __________ pump.

A) Reciprocating B) Diaphargm C) Centrifugal D) Pneumatic

Discuss

Answer & Solution

Answer: Option B

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

One dimensional flow implies

A) Flow in a straight line B) Steady uniform flow C) Unsteady uniform flow D) A flow which does not account for changes in transverse direction

Discuss

Answer & Solution

Answer: Option D

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

One horsepower is equal to

A) 550 lbf.ft/second B) 550 kgf.m/second C) Both A and B D) 550 lbf.ft./hr

Discuss

Answer & Solution

Answer: Option A

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

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Fluid Mechanics MCQ Questions & Answers | Chemical Engineering