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-3 section-6

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

The angle of contact in case of a liquid depends upon

A) The nature of the liquid and the solid B) The material which exists above the free surface of the liquid C) Both of die above D) Any one of the above

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Answer & Solution

Answer: Option C

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The loss of head at exit of a pipe is (where v = Velocity of liquid in the pipe)

A) $$\frac{{{{\text{v}}^2}}}{{2{\text{g}}}}$$ B) $$\frac{{0.5{{\text{v}}^2}}}{{2{\text{g}}}}$$ C) $$\frac{{0.375{{\text{v}}^2}}}{{2{\text{g}}}}$$ D) $$\frac{{0.75{{\text{v}}^2}}}{{2{\text{g}}}}$$

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Answer & Solution

Answer: Option A

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The loss of head at entrance in a pipe is (where v = Velocity of liquid in the pipe)

A) $$\frac{{{{\text{v}}^2}}}{{2{\text{g}}}}$$ B) $$\frac{{0.5{{\text{v}}^2}}}{{2{\text{g}}}}$$ C) $$\frac{{0.375{{\text{v}}^2}}}{{2{\text{g}}}}$$ D) $$\frac{{0.75{{\text{v}}^2}}}{{2{\text{g}}}}$$

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Answer & Solution

Answer: Option B

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Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, in the direction of flow of the liquid, is known as

A) Lift B) Drag C) Stagnation pressure D) Bulk modulus

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Answer & Solution

Answer: Option B

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Euler's equation in the differential form for the motion of liquids is given by

A) $$\frac{{{\text{dp}}}}{\rho } + {\text{gdz}} + {\text{vdv}} = 0$$ B) $$\frac{{{\text{dp}}}}{\rho } - {\text{gdz}} + {\text{vdv}} = 0$$ C) $$\rho {\text{dp}} + {\text{gdz}} + {\text{vdv}} = 0$$ D) $$\rho {\text{dp}} - {\text{gdz}} + {\text{vdv}} = 0$$

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Answer & Solution

Answer: Option A

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A structure used to dam up a stream or river over which the water flows is called

A) Orifice B) Notch C) Weir D) Dam

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Answer & Solution

Answer: Option C

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A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the

A) Kinetic head B) Velocity head C) Manometric head D) Static head

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Answer & Solution

Answer: Option C

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An internal mouthpiece is said to be running free if the length of the mouthpiece is __________ the diameter of the orifice.

A) Less than twice B) More than twice C) Less than three times D) More than three times

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Answer & Solution

Answer: Option C

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An internal mouthpiece is said to be running __________ if the length of the mouthpiece is more than three times the diameter of the orifice.

A) Free B) Partially C) Full D) None of these

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Answer & Solution

Answer: Option C

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Total pressure on a 1 m × 1 m gate immersed vertically at a depth of 2 m below the free water surface will be

A) 1000 kg B) 4000 kg C) 2000 kg D) 8000 kg

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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