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-6 section-4

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

The water pressure per metre length on a vertical masonry wall of dam is (where w = Specific weight of the liquid and H = Height of the liquid)

A) $$\frac{{{\text{wH}}}}{2}$$ B) $${\text{wH}}$$ C) $$\frac{{{\text{w}}{{\text{H}}^2}}}{2}$$ D) $$\frac{{{\text{w}}{{\text{H}}^2}}}{4}$$

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Answer & Solution

Answer: Option C

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The cavitation in a hydraulic machine

A) Causes noise and vibration of various parts B) Reduces the discharge of a turbine C) Causes sudden drop in power output and efficiency D) All of the above

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Answer & Solution

Answer: Option D

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The discharge over a triangular notch is

A) Inversely proportional to $${{\text{H}}^{\frac{3}{2}}}$$ B) Directly proportional to $${{\text{H}}^{\frac{3}{2}}}$$ C) Inversely proportional to $${{\text{H}}^{\frac{5}{2}}}$$ D) Directly proportional to $${{\text{H}}^{\frac{5}{2}}}$$

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Answer & Solution

Answer: Option D

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The time oscillation of a floating body with increase in meatcentric height will be

A) Same B) Higher C) Lower D) Lower/higher depending on weight of body

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Answer & Solution

Answer: Option C

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If the surface of liquid is convex, men

A) Cohesion pressure is negligible B) Cohesion pressure is decreased C) Cohesion pressure is increased D) There is no cohesion pressure

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Answer & Solution

Answer: Option C

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The coefficient of discharge for an external mouthpiece depends upon

A) Velocity of liquid B) Pressure of liquid C) Area of mouthpiece D) Length of mouthpiece

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Answer & Solution

Answer: Option D

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The value of coefficient of discharge is __________ the value of coefficient of velocity.

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

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Answer & Solution

Answer: Option A

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The pressure of a liquid measured with the help of a Piezometer tube is

A) Vacuum pressure B) Gauge pressure C) Absolute pressure D) Atmospheric pressure

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Answer & Solution

Answer: Option B

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A body floating in a liquid is said to be in neutral equilibrium, if its metacentre

A) Coincides with its centre of gravity B) Lies above its centre of gravity C) Lies below its centre of gravity D) Lies between the centre of buoyancy and centre of gravity

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Answer & Solution

Answer: Option A

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A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

A) Notch B) Weir C) Mouthpiece D) Nozzle

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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