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-5 section-3

Choose the wrong statement

A) Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force B) Viscosity is due primarily to interaction between fluid molecules C) Viscosity of liquids decreases with increase in temperature D) Viscosity of liquids is appreciably affected by change in pressure

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Answer & Solution

Answer: Option D

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Choose the wrong statement

A) The horizontal component of the hydrostatic force on any surface is equal to the normal force on the vertical projection of the surface B) The horizontal component acts through the center of pressure for the vertical projection C) The vertical component of the hydrostatic force on any surface is equal to the weight of the volume of the liquid above the area D) The vertical component passes through the center of pressure of the volume

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Answer & Solution

Answer: Option D

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Choose the wrong statement

A) Any weight, floating or immersed in a liquid, is acted upon by a buoyant force B) Buoyant force is equal to the weight of the liquid displaced C) The point through which buoyant force acts, is called the center of buoyancy D) Center of buoyancy is located above the center of gravity of the displaced liquid

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Answer & Solution

Answer: Option D

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Select the wrong statement

A) An equivalent pipe is treated as an ordinary pipe for all calculations B) The length of an equivalent pipe is equal to that of a compound pipe C) The discharge through an equivalent pipe is equal to that of a compound pipe D) The diameter of an equivalent pipe is equal to that of a compound pipe

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Answer & Solution

Answer: Option D

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Choose the wrong statement

A) The center of buoyancy is located at the center of gravity of the displaced liquid B) For stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy C) If C.G. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions D) All floating bodies are stable

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Answer & Solution

Answer: Option D

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The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H))

A) $$\frac{{\text{P}}}{{\sqrt {\text{H}} }}$$ B) $$\frac{{\text{P}}}{{\text{H}}}$$ C) $$\frac{{\text{P}}}{{{{\text{H}}^{\frac{3}{2}}}}}$$ D) $$\frac{{\text{P}}}{{{{\text{H}}^2}}}$$

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Answer & Solution

Answer: Option C

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In a broad-crested weir, the discharge is maximum if the head of water on the downstream side of weir is __________ the head of water on the upstream side of weir.

A) Equal to B) One-third C) Two-third D) Three-fourth

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Answer & Solution

Answer: Option C

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In an internal mouthpiece, if the jet after contraction does not touch the sides of the mouthpiece, then the mouthpiece is said to be

A) Running full B) Running free C) Partially running full D) Partially running free

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Answer & Solution

Answer: Option B

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A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is

A) 1 B) 5 C) 7 D) 6

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Answer & Solution

Answer: Option D

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An odd shaped body weighing 7.5 kg and occupying 0.01 m³ volume will be completely submerged in a fluid having specific gravity of

A) 1 B) 1.2 C) 0.8 D) 0.75

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Answer & Solution

Answer: Option D

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

Hydraulics And Fluid Mechanics MCQ Questions & Answers | Mechanical Engineering