Hydraulics And Fluid Mechanics MCQ Questions & Answers

21

The buoyancy depends upon the

A) Weight of the liquid displaced B) Pressure with which the liquid is displaced C) Viscosity of the liquid D) Compressibility of the liquid

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Answer & Solution

Answer: Option A

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22

The magnitude of water hammer depends upon the

A) Elastic properties of the pipe material B) Elastic properties of the liquid flowing through the pipe C) Speed at which the valve is closed D) All of the above

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Answer & Solution

Answer: Option D

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23

The width of the bucket for a Pelton wheel is generally ________ the diameter of jet.

A) Double B) Three times C) Four times D) Five times

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Answer & Solution

Answer: Option D

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24

The depth of the bucket for a Pelton wheel is generally _________ the diameter of jet.

A) Equal to B) 1.2 times C) 1.8 times D) Double

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Answer & Solution

Answer: Option B

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25

The speed of sound in a ideal gas varies directly as it’s

A) Absolute temperature B) Temperature C) Density D) Modulus of elasticity

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Answer & Solution

Answer: Option A

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26

Meta-centric height is given as the distance between

A) The center of gravity of the body and the metacenter B) The center of gravity of the body and the center of buoyancy C) The center of gravity of the body and the center of pressure D) Center of buoyancy and metacenter

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Answer & Solution

Answer: Option A

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27

When a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as

A) Steady flow B) Turbulent flow C) Vortex flow D) Uniform flow

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Answer & Solution

Answer: Option C

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28

Non uniform flow occurs when

A) The direction and magnitude of the velocity at all points are identical B) The velocity of successive fluid particles, at any point, is the same at successive periods of time C) Velocity, depth, pressure, etc. change from point to point in the fluid flow D) The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane

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Answer & Solution

Answer: Option C

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29

Steady flow occurs when

A) The direction and magnitude of the velocity at all points are identical B) The velocity of successive fluid particles, at any point, is the same at successive periods of time C) The magnitude and direction of the velocity do not change from point to point in the fluid D) The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane

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Answer & Solution

Answer: Option B

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30

True one-dimensional flow occurs when

A) The direction and magnitude of the velocity at all points are identical B) The velocity of successive fluid particles, at any point, is the same at successive periods of time C) The magnitude and direction of the velocity do not change from point to point in the fluid D) The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane

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Answer & Solution

Answer: Option A

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

Hydraulics And Fluid Mechanics MCQ Questions & Answers | Mechanical Engineering