Hydraulics And Fluid Mechanics MCQ Questions & Answers

Hydraulics And Fluid Mechanics MCQ Questions & Answers | Mechanical Engineering

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-6 section-7

The unit speed of the turbine runner is

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

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Answer & Solution

Answer: Option A

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The speed of a turbine runner is

A) Directly proportional to $${{\text{H}}^{\frac{1}{2}}}$$ B) Inversely proportional to $${{\text{H}}^{\frac{1}{2}}}$$ C) Directly proportional to $${{\text{H}}^{\frac{3}{2}}}$$ D) Inversely proportional to $${{\text{H}}^{\frac{3}{2}}}$$

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Answer & Solution

Answer: Option A

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The shear stress between the two liquid layers is __________ proportional to the distance between two layers.

A) Directly B) Inversely C) Both A and B D) None of these

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Answer & Solution

Answer: Option B

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According to fan laws, at constant pressure, the speed capacity and power vary

A) Directly as the air or gas density B) Inversely as square root of density C) Inversely as density D) As square of density

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Answer & Solution

Answer: Option B

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The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m³, a = Cross-sectional area of jet in m² and V = Velocity of jet in m/s)

A) $$\frac{{{\text{waV}}}}{{2{\text{g}}}}$$ B) $$\frac{{{\text{waV}}}}{{\text{g}}}$$ C) $$\frac{{{\text{wa}}{{\text{V}}^2}}}{{2{\text{g}}}}$$ D) $$\frac{{{\text{wa}}{{\text{V}}^2}}}{{\text{g}}}$$

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Answer & Solution

Answer: Option D

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When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow.

A) Less than B) More than C) Equal to D) None of these

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Answer & Solution

Answer: Option A

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For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal

A) Ratio of inertial force to force due to viscosity B) Ratio of inertial force to force due to gravitation C) Ratio of inertial force to force due to surface tension D) All the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity

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Answer & Solution

Answer: Option D

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Low specific speed of a pump implies it is

A) Centrifugal pump B) Mixed flow pump C) Axial flow pump D) None of the above

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Answer & Solution

Answer: Option A

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Medium specific speed of a pump implies it is

A) Centrifugal pump B) Mixed flow pump C) Axial flow pump D) Any one of the above

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Answer & Solution

Answer: Option B

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High specific speed of a pump implies it is

A) Centrifugal pump B) Mixed flow pump C) Axial flow pump D) Any one of the above

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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