Fluid Mechanics MCQ Questions & Answers

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Each section contains 100 MCQs on Fluid Mechanics .

A pressure of 10 m head of water is equivalent to __________ kN/m².

A) 98 B) 147 C) 196 D) 49

Discuss

Answer & Solution

Answer: Option A

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

Viscosity of water at 40°C lies in the range of

A) 1 × 10^-3 to 2 × 10^-3 kg/m.s B) 0.5 × 10^-3 to 1 × 10^-3 kg/m.s C) 1 to 2 kg/m.s D) 0.5 to 1 kg/m.s

Discuss

Answer & Solution

Answer: Option B

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

Which of the following conditions must be satisfied for lift force to be developed?

A) The body should be bluff body B) The body should be stream lined C) Circulation around the body is essentially required D) The main stream velocity must approach the velocity of sound in that fluid medium

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Answer & Solution

Answer: Option C

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

Pipes having diameter 14 inches or more are designated by their

A) Outside diameter B) Inside diameter C) Schedule number D) None of these

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Answer & Solution

Answer: Option A

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

For flow past a flat plate, if x is the distance along the plate in the direction of flow, the boundary layer thickness is proportional to

A) $$\sqrt {\text{x}} $$ B) $$\frac{1}{{\sqrt {\text{x}} }}$$ C) x D) $$\frac{1}{{\text{x}}}$$

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Answer & Solution

Answer: Option A

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

Power requirement of fans having constant wheel diameter varies __________ fan speed.

A) As square of B) Directly as C) As cube of 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

Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number?

A) Fanning equation B) Blake-Pllummer equation C) Hagen-Poiseulle equation D) Kozney-Karman equation

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Answer & Solution

Answer: Option B

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

Major loss in sudden contraction in pipe flow is due to

A) Boundary friction B) Flow contraction C) Expansion of flow after sudden contraction D) None of these

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Answer & Solution

Answer: Option B

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

The Prandtl pitot tube measures the

A) Velocity at a point in the flow B) Pressure at a point C) Average flow velocity D) Pressure difference in pipe flow

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Answer & Solution

Answer: Option A

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

Pick out the correct statement.

A) Human blood is a Newtonion fluid B) A Newtonion fluid obeys Newton's law of cooling C) For a non-Newtonion fluid, a straight line passes through the origin in a plot between shear stress and shear gradient D) Thin lubricating oil is an example of a non-Newtonion fluid

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Answer & Solution

Answer: Option B

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

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Fluid Mechanics MCQ Questions & Answers | Chemical Engineering