Theory Of Machine MCQ Questions & Answers

21

The factor which affects the critical speed of a shaft is

A) Diameter of disc B) Span of shaft C) Eccentricity D) All of these

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Answer & Solution

Answer: Option D

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22

Klein's construction is useful to determine

A) Velocity of various parts B) Acceleration of various parts C) Displacement of various parts D) Angular acceleration of various parts

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Answer & Solution

Answer: Option B

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23

A rigid body possesses ________ degrees of freedom

A) One B) Two C) Four D) Six

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Answer & Solution

Answer: Option D

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24

In higher pair, the relative motion is

A) Purely turning B) Purely sliding C) Purely rotary D) Combination of sliding and turning

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Answer & Solution

Answer: Option D

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25

A Hartnell governor is a

A) Dead weight governor B) Pendulum type governor C) Spring loaded governor D) Inertia governor

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Answer & Solution

Answer: Option C

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26

Pulley in a belt drive acts as

A) Cylindrical pair B) Turning pair C) Rolling pair D) Sliding pair

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Answer & Solution

Answer: Option C

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27

Which of the following statement is correct?

A) The periodic time of a particle moving with simple harmonic motion is the time taken by a particle for one complete oscillation. B) The periodic time of a particle moving with simple harmonic motion is directly proportional to its angular velocity. C) The velocity of a particle moving with simple harmonic motion is zero at the mean position. D) The acceleration of the particle moving with simple harmonic motion is maximum at the mean position.

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Answer & Solution

Answer: Option A

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28

Which of the following statement is correct?

A) The primary unbalanced force is less than the secondary unbalanced force B) The primary unbalanced force is maximum twice in one revolution of the crank C) The unbalanced force due to reciprocating masses varies in magnitude and direction both D) The magnitude of swaying couple in locomotives is inversely proportional to the distance between the two cylinder center lines

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Answer: Option B

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29

Which of the following statement is correct?

A) For constant velocity ratio transmission between two gears, the common normal at the point of contact must always pass through a fixed point on the line joining the centers of rotation of gears. B) For involute gears, the pressure angle changes with the change in center distance between gears. C) The epicyclic gear trains involve rotation of at least one gear axis about some other gear axis. D) All of the above

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Answer: Option D

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30

Which of the following statement is correct?

A) The power absorbed in operating the piston valve is less than D-slide valve B) The wear of the piston valve is less than the wear of the D-slide valve C) The D-slide valve is also called outside admission valve D) All of the above

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Answer & Solution

Answer: Option D

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Theory Of Machine MCQ Questions & Answers | Mechanical Engineering