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-4 section-7

Guide angle as per the aerofoil theory of Kaplan turbine blade design is defined as the angle between

A) Lift and resultant force B) Drag and resultant force C) Lift and tangential force D) Lift and drag

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Answer & Solution

Answer: Option A

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Which of the following hydraulic unit is used for transmitting increased or decreased torque to the driven shaft?

A) Hydraulic ram B) Hydraulic intensifier C) Hydraulic torque converter D) Hydraulic accumulator

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Answer & Solution

Answer: Option C

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The hydraulic efficiency of an impulse turbine is maximum when velocity of wheel is _______ of the jet velocity,

A) One-fourth B) One-half C) Three-fourth D) Double

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Answer & Solution

Answer: Option B

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In a forced vortex, the velocity of flow everywhere within the fluid is

A) Maximum B) Minimum C) Zero D) Nonzero finite

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Answer & Solution

Answer: Option D

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The maximum efficiency of transmission through a pipe is

A) 50% B) 56.7% C) 66.67% D) 76.66%

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Answer & Solution

Answer: Option C

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The units of kinematic viscosity are

A) m²/sec B) Newton sec/m² C) Newton sec/m³ D) Kg sec/m²

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Answer & Solution

Answer: Option A

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The efficiency of power transmission through pipe is (where H = Total supply head and h_f = Head lost due to friction in the pipe)

A) $$\frac{{{\text{H}} - {{\text{h}}_{\text{f}}}}}{{\text{H}}}$$ B) $$\frac{{\text{H}}}{{{\text{H}} - {{\text{h}}_{\text{f}}}}}$$ C) $$\frac{{{\text{H}} + {{\text{h}}_{\text{f}}}}}{{\text{H}}}$$ D) $$\frac{{\text{H}}}{{{\text{H}} + {{\text{h}}_{\text{f}}}}}$$

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Answer & Solution

Answer: Option A

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Cavitation is caused by

A) High velocity B) High pressure C) Weak material D) Low pressure

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Answer & Solution

Answer: Option D

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An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination of the free surface of the liquid will be __________ to the acceleration of the tank.

A) Equal to B) Directly proportional C) Inversely proportional D) None of these

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Answer & Solution

Answer: Option B

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The pressure of fluid due to hammer blow is

A) Directly proportional to density of fluid B) Inversely proportional to density of fluid C) Directly proportional to $${\left( {{\text{density}}} \right)^{\frac{1}{2}}}$$ of fluid D) Inversely proportional to $${\left( {{\text{density}}} \right)^{\frac{1}{2}}}$$ of fluid

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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