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-3 section-2

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

Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m.?

A) Pelton wheel B) Francis turbine C) Kaplan turbine 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

If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its

A) Specific weight B) Specific mass C) Specific gravity D) Specific density

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Answer & Solution

Answer: Option C

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In a depressed nappe

A) The pressure below the nappe is atmospheric B) The pressure below the nappe is negative C) The pressure above the nappe is atmospheric D) The pressure above the nappe is negative

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Answer & Solution

Answer: Option B

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Free surface of a liquid tends to contract to the smallest possible area due to force of

A) Surface tension B) Viscosity C) Friction D) Cohesion

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Answer & Solution

Answer: Option A

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A flow in which the viscosity of fluid is dominating over the inertia force is called

A) Steady flow B) Unsteady flow C) Laminar flow D) Turbulent flow

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Answer & Solution

Answer: Option C

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The cavitation in reaction turbines is avoided, to a great extent by

A) Installing the turbine below the tail race level B) Using stainless steel runner of the turbine C) Providing highly polished blades to the runner D) All of the above

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Answer & Solution

Answer: Option D

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A Pelton wheel is

A) Tangential flow impulse turbine B) Inward flow impulse turbine C) Outward flow impulse turbine D) Inward flow reaction turbine

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Answer & Solution

Answer: Option A

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A perfect gas

A) Has constant viscosity B) Has zero viscosity C) Is in compressible D) None of the above

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Answer & Solution

Answer: Option D

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The pressure of air __________ with the increase of height from the surface of the earth.

A) Does not change B) Decreases C) Increases D) None of these

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Answer & Solution

Answer: Option B

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When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid

A) Remains horizontal B) Becomes curved C) Falls on the front end D) Falls on the back end

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Answer & Solution

Answer: Option C

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

Hydraulics And Fluid Mechanics MCQ Questions & Answers | Mechanical Engineering