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-1

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) 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 pleasure

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Answer & Solution

Answer: Option C

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Which place in hydraulic turbine is most susceptible for cavitations?

A) Inlet of draft rube B) Blade inlet C) Guide blade D) Penstock

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Answer & Solution

Answer: Option A

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Which of the following pump is successfully used for lifting water from deep wells?

A) Centrifugal pump B) Reciprocating pump C) Jet pump D) Air lift pump

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Answer & Solution

Answer: Option D

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Impulse turbine is generally fitted

A) At the level of tail race B) Little above the tail race C) Slightly below the tail race D) About 2.5 m above the tail race to avoid cavitations

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Answer & Solution

Answer: Option B

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A metal with specific gravity of 'a' floating in a fluid of same specific gravity 'a' will

A) Sink to bottom B) Float over fluid C) Partly immersed D) Be fully immersed with top surface at fluid surface

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Answer & Solution

Answer: Option D

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A tank of uniform cross-sectional area (A) containing liquid upto height (H₁) has an orifice of cross-sectional area (a) at its bottom. The time required to bring the liquid level from H₁ to H₂ will be

A) $$\frac{{2{\text{A}}\sqrt {{{\text{H}}_1}} }}{{{{\text{C}}_{\text{d}}} \times {\text{a}}\sqrt {2{\text{g}}} }}$$ B) $$\frac{{2{\text{A}}\sqrt {{{\text{H}}_2}} }}{{{{\text{C}}_{\text{d}}} \times {\text{a}}\sqrt {2{\text{g}}} }}$$ C) $$\frac{{2{\text{A}}\left( {\sqrt {{{\text{H}}_1}} - \sqrt {{{\text{H}}_2}} } \right)}}{{{{\text{C}}_{\text{d}}} \times {\text{a}}\sqrt {2{\text{g}}} }}$$ D) $$\frac{{2{\text{A}}\left( {{\text{H}}_1^{\frac{3}{2}} - {\text{H}}_2^{\frac{3}{2}}} \right)}}{{{{\text{C}}_{\text{d}}} \times {\text{a}}\sqrt {2{\text{g}}} }}$$

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Answer & Solution

Answer: Option C

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Surface tension has the units of

A) Newton-sec/m B) Newton-m/sec C) Newton/m D) Newton

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Answer & Solution

Answer: Option C

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A Francis turbine is used when the available head of water is

A) 0 to 25 m B) 25 m to 250 m C) Above 250 m D) None of these

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Answer & Solution

Answer: Option B

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According to Bernoulli's equation for steady ideal fluid flow

A) Principle of conservation of mass holds B) Velocity and pressure are inversely proportional C) Total energy is constant throughout D) The energy is constant along a streamline but may vary across streamlines

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Answer & Solution

Answer: Option D

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Pressure intensifier increases the pressure in proportion to

A) Ratio of diameters B) Square of ratio of diameters C) Inverse ratio of diameters D) Square of inverse ratio of diameters

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Answer & Solution

Answer: Option B

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

Hydraulics And Fluid Mechanics MCQ Questions & Answers | Mechanical Engineering