Hydraulics And Fluid Mechanics MCQ Questions & Answers

Learn Hydraulics And Fluid Mechanics MCQ questions & answers are available for a Mechanical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Hydraulics And Fluid Mechanics MCQ question is the important chapter for a Mechanical Engineering and GATE students. Page-2 section-7

Each section contains 100 MCQs on Hydraulics and Fluid Mechanics in ME .

The normal stress in a fluid will be constant in all directions at a point only if

A) It is incompressible B) It has uniform viscosity C) It has zero viscosity D) It is at rest

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Answer & Solution

Answer: Option D

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

If the coefficient of discharge is 0.6, then the discharge over a right angled notch is

A) $$0.417\,{{\text{H}}^{\frac{5}{2}}}$$ B) $$1.417\,{{\text{H}}^{\frac{5}{2}}}$$ C) $$4.171\,{{\text{H}}^{\frac{5}{2}}}$$ D) $$7.141\,{{\text{H}}^{\frac{5}{2}}}$$

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Answer & Solution

Answer: Option B

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The maximum number of jets generally employed in impulse turbine without jet interference is

A) 4 B) 6 C) 8 D) 12

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Answer & Solution

Answer: Option B

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In order to measure the flow with a Venturimeter, it is installed in

A) Horizontal line B) Inclined line with flow upwards C) Inclined line with flow downwards D) Any direction and in any location

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Answer & Solution

Answer: Option D

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The unit of viscosity is

A) Meters² per sec B) kg-sec/meter C) Newton-sec per meter² D) Newton-sec per meter

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Answer & Solution

Answer: Option B

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If the net positive suction head (NPSH) requirement for the pump is not satisfied, then

A) No flow will take place B) Cavitation will be formed C) Efficiency will be low D) Excessive power will be consumed

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Answer & Solution

Answer: Option B

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The theoretical velocity of jet at vena contracta is (where H = Head of water at vena contracta)

A) $$2{\text{gH}}$$ B) $${\text{H}}\sqrt {2{\text{g}}} $$ C) $$2{\text{g}}\sqrt {\text{H}} $$ D) $$\sqrt {2{\text{gH}}} $$

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Answer & Solution

Answer: Option D

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A body floats in stable equilibrium

A) When its meatcentric height is zero B) When the metacentre is above e.g. C) When its e.g. is below its center of buoyancy D) Metacentre has nothing to do with position of e.g. for determining stability

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Answer & Solution

Answer: Option B

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The meatcentric height is the distance between the

A) Centre of gravity of the floating body and the centre of buoyancy B) Centre of gravity of the floating body and the metacentre C) Metacentre and centre of buoyancy D) Original centre of buoyancy and new centre of buoyancy

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Answer & Solution

Answer: Option B

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If no resistance is encountered by displacement, such a substance is known as

A) Fluid B) Water C) Gas D) Ideal fluid

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Answer & Solution

Answer: Option D

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

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Hydraulics And Fluid Mechanics MCQ Questions &amp; Answers | Mechanical Engineering

Hydraulics And Fluid Mechanics MCQ Questions & Answers | Mechanical Engineering