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-5 section-4

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

Discharge of a centrifugal pump is (where N = Speed of the pump impeller)

A) Directly proportional to N B) Inversely proportional to N C) Directly proportional to N² D) Inversely proportional to N²

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

A Pelton wheel working under a constant head and discharge, has maximum efficiency when the speed ratio is

A) 0.26 B) 0.36 C) 0.46 D) 0.56

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Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

When a vertical wall is subjected to pressures due to liquid on both sides, the resultant pressure is the __________ of the two pressures.

A) Sum B) Difference C) Arithmetic mean D) Geometric mean

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Answer & Solution

Answer: Option B

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The speed of an imaginary turbine, identical with the given turbine, which will develop a unit power under a unit head, is known as

A) Normal speed B) Unit speed C) Specific speed D) None of these

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Answer & Solution

Answer: Option C

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The overall efficiency for a Pelton wheel lies between

A) 0.50 to 0.65 B) 0.65 to 0.75 C) 0.75 to 0.85 D) 0.85 to 0.90

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Answer & Solution

Answer: Option D

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A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall per unit length is (where w = Specific weight of liquid and H = Height of liquid)

A) $${\text{wH}}$$ B) $$\frac{{{\text{wH}}}}{2}$$ C) $$\frac{{{\text{w}}{{\text{H}}^2}}}{2}$$ D) $$\frac{{{\text{w}}{{\text{H}}^2}}}{3}$$

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

A liquid would wet the solid, if adhesion forces as compared to cohesion forces are

A) Less B) More C) Equal D) Less at low temperature and more at high temperature

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Answer & Solution

Answer: Option B

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Which of the following manometer has highest sensitivity?

A) U-tube with water B) Inclined U-tube C) U-tube with mercury D) Micro-manometer with water

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Answer & Solution

Answer: Option D

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The viscosity of a liquid __________ its rate of flow through a hole in a vessel.

A) Effects B) Does not effect C) Both A and B D) None of these

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Answer & Solution

Answer: Option A

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A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is

A) 3.53 kN B) 33.3 kN C) 35.3 kN D) None of these

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

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

Hydraulics And Fluid Mechanics MCQ Questions & Answers | Mechanical Engineering