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-2 section-1

The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram and a = Area of plunger)

A) $$\frac{{\text{W}}}{{\text{p}}} \times \frac{{\text{A}}}{{\text{a}}}$$ B) $$\frac{{\text{p}}}{{\text{W}}} \times \frac{{\text{a}}}{{\text{A}}}$$ C) $$\frac{{\text{W}}}{{\text{p}}} \times \frac{{\text{a}}}{{\text{A}}}$$ D) $$\frac{{\text{p}}}{{\text{W}}} \times \frac{{\text{A}}}{{\text{a}}}$$

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Answer & Solution

Answer: Option C

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An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is

A) 10 m/sec² B) 9.81 m/sec² C) 9.75 m/sec² D) 9 m/sec

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Answer & Solution

Answer: Option A

Solution:

Standard weight = mass × acceleration = 10 × 9.81 = 98.1 N
Actual weight = 9.81 × g = 98.1 N
$${\text{g}} = \frac{{98.1}}{{9.81}} = 10\,{\text{m}}/{\sec ^2}$$

The coefficient of viscosity may be determined by

A) Capillary tube method B) Orifice type viscometer C) Rotating cylinder method D) All of these

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Answer & Solution

Answer: Option D

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The region between the separation streamline and the boundary surface of the solid body is known as

A) Wake B) Drag C) Lift D) Boundary layer

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Answer & Solution

Answer: Option A

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The horizontal component of buoyant force is

A) Negligible B) Same as buoyant force C) Zero D) None of the above

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Answer & Solution

Answer: Option C

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Puck up the wrong statement about centrifugal pump

A) Discharge a diameter B) Head a speed² C) Head a diameter D) Power a speed⁴

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Answer & Solution

Answer: Option A

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The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.

A) Equal to B) Double C) Three to four times D) Five to six times

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Answer & Solution

Answer: Option C

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Normal depth in open channel flow is the depth of flow corresponding to

A) Steady flow B) Unsteady flow C) Laminar flow D) Uniform flow

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Answer & Solution

Answer: Option D

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The discharge of a double acting reciprocating pump is (where L = Length of stroke, A = Cross-sectional area of piston and N = Speed of crank in r.p.m.)

A) LAN B) 2 LAN C) $$\frac{{{\text{LAN}}}}{{60}}$$ D) $$\frac{{2{\text{LAN}}}}{{60}}$$

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Answer & Solution

Answer: Option D

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A flow whose streamline is represented by a curve, is called

A) One-dimensional flow B) Two-dimensional flow C) Three-dimensional flow D) Four-dimensional flow

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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