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Theory of machines Questions and Answers

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Exercise

Exercise 1
Exercise 2
Exercise 3
Exercise 4
Exercise 5
Exercise 6
Exercise 7

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Q 1
In Meyer's expansion valve, the main valve is driven by an eccentric having an angle of advance from

A)   10° - 15°

B)   15° - 25°

C)   25° - 30°

D)   30° - 40°

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Correct Option - C

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Q 2
The frictional torque transmitted in a flat pivot bearing with assumption of uniform pressure is __________ as compared to uniform wear.

A)   less

B)   more

C)   same

D)  


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Correct Option - B

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Q 3
The steering of a ship means

A) movement of a complete ship up and down in vertical plane about transverse axis

B) turning of a complete ship in a curve towards right or left, while it moves forward

C) rolling of a complete ship side-ways

D) none of the above

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Correct Option - B

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Q 4
A mass of 1 kg is attached to the end of a spring with a stiffness of 0.7 N/mm. The critical damping coefficient of this system is

A)   1.4 N-s/m

B)   18.52 N-s/m

C)   52.92 N-s/m

D)   529.2 N-s/m

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Correct Option - C

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Q 5
The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a right turn. The effect of gyroscopic couple acting on it will be to raise the stern and lower the bow.

A)   Agree

B)   Disagree

C)  


D)  


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Correct Option - A

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Q 6
When the connection between the two elements is such that only required kind of relative motion occurs, it is known as self-closed pair.

A)   Right

B)   Wrong

C)  


D)  


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Correct Option - A

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Q 7
The sliding pairs, turning pairs and screw pairs form lower pairs.

A)   True

B)   False

C)  


D)  


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Correct Option - A

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