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-2 section-2

The ratio of actual work available at the turbine to the energy imparted to the wheel is known as ________ efficiency.

A) Hydraulic B) Mechanical C) Overall D) None of these

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Answer & Solution

Answer: Option B

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Re-entrant or Borda's mouthpiece is an __________ mouthpiece.

A) Internal B) External C) Both A and B D) None of these

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Answer & Solution

Answer: Option A

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A notch is used to measure __________ of liquids.

A) Pressure B) Discharge C) Velocity D) Volume

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Answer & Solution

Answer: Option B

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When the Venturimeter is inclined, then for a given flow it will show __________ reading.

A) Same B) More C) Less D) None of these

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Answer & Solution

Answer: Option A

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The highest efficiency is obtained with a channel of __________ section.

A) Circular B) Square C) Rectangular D) Trapezoidal

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Answer & Solution

Answer: Option D

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When a tube of smaller diameter is dipped in water, the water rises in the tube with an upward __________ surface.

A) Concave B) Convex C) Plane D) None of these

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Answer & Solution

Answer: Option A

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Water is _________ liquid.

A) A compressible B) An incompressible C) Both A and B D) None of these

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Answer & Solution

Answer: Option B

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Water is a __________ fluid.

A) Real B) Ideal C) Newtonian D) Non-Newtonian

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Answer & Solution

Answer: Option C

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The diameter of the nozzle (d) for maximum transmission of power is given by (where D = Diameter of pipe, f = Darcy’s coefficient of friction for pipe and $$l$$ = Length of pipe)

A) $${\text{d}} = {\left( {\frac{{{{\text{D}}^5}}}{{8{\text{f}}l}}} \right)^{\frac{1}{2}}}$$ B) $${\text{d}} = {\left( {\frac{{{{\text{D}}^5}}}{{8{\text{f}}l}}} \right)^{\frac{1}{3}}}$$ C) $${\text{d}} = {\left( {\frac{{{{\text{D}}^5}}}{{8{\text{f}}l}}} \right)^{\frac{1}{4}}}$$ D) $${\text{d}} = {\left( {\frac{{{{\text{D}}^5}}}{{8{\text{f}}l}}} \right)^{\frac{1}{5}}}$$

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Answer & Solution

Answer: Option C

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The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where R_N = Reynold number)

A) $$\frac{1}{{{{\text{R}}_{\text{N}}}}}$$ B) $$\frac{4}{{{{\text{R}}_{\text{N}}}}}$$ C) $$\frac{{16}}{{{{\text{R}}_{\text{N}}}}}$$ D) $$\frac{{64}}{{{{\text{R}}_{\text{N}}}}}$$

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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