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-4 section-5

A hydraulic intensifier normally consists of

A) Two cylinders, two rams and a storage device B) A cylinder and a ram C) Two coaxial rams and two cylinders D) A cylinder, a piston, storage tank and control valve

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Answer & Solution

Answer: Option C

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Center of pressure compared to e.g. is

A) Above it B) Below it C) At same point D) Above or below depending on area of body

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Answer & Solution

Answer: Option B

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In order that flow takes place between two points in a pipeline, the differential pressure between these points must be more than

A) Frictional force B) Viscosity C) Surface friction D) All of the above

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Answer & Solution

Answer: Option D

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The total energy line lies over the centre line of the pipe by an amount equal to

A) Pressure head B) Velocity head C) Pressure head + velocity head D) Pressure head - velocity head

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Answer & Solution

Answer: Option C

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The specific speed of a turbine is given by the equation

A) $$\frac{{{\text{N}}\sqrt {\text{P}} }}{{{{\text{H}}^{\frac{3}{2}}}}}$$ B) $$\frac{{{\text{N}}\sqrt {\text{P}} }}{{{{\text{H}}^2}}}$$ C) $$\frac{{{\text{N}}\sqrt {\text{P}} }}{{{{\text{H}}^{\frac{5}{4}}}}}$$ D) $$\frac{{{\text{N}}\sqrt {\text{P}} }}{{{{\text{H}}^3}}}$$

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Answer & Solution

Answer: Option C

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An open tank containing liquid is made to move from rest with a uniform acceleration. The angle 0 which the free surface of liquid makes with the horizontal is such that (where a = Horizontal acceleration of the tank and g = Acceleration due to gravity)

A) $$\tan \theta = \frac{{\text{a}}}{{\text{g}}}$$ B) $$\tan \theta = \frac{{2{\text{a}}}}{{\text{g}}}$$ C) $$\tan \theta = \frac{{\text{a}}}{{2{\text{g}}}}$$ D) $$\tan \theta = \frac{{{{\text{a}}^2}}}{{2{\text{g}}}}$$

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Answer & Solution

Answer: Option A

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The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to

A) Buoyancy B) Equilibrium of a floating body C) Archimede's principle D) Bernoulli's theorem

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Answer & Solution

Answer: Option C

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The discharge through a channel of trapezoidal section is maximum when

A) Width of channel at the top is equal to twice the width at the bottom B) Depth of channel is equal to the width at the bottom C) The sloping side is equal to half the width at the top D) The sloping side is equal to the width at the bottom

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Answer & Solution

Answer: Option C

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Coefficient of contraction is the ratio of

A) Actual velocity of jet at vena contracta to the theoretical velocity B) Loss of head in the orifice to the head of water available at the exit of the orifice C) Actual discharge through an orifice to the theoretical discharge D) Area of jet at vena contracta to the area of orifice

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Answer & Solution

Answer: Option D

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The most efficient section of a channel is

A) Triangular B) Rectangular C) Square D) Trapezoidal

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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