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Theory of Machine

Theory of Machine
The velocity of the rubbing surface __________ with the distance from the axis of the bearing.

None of these
Remain same
Decreases
Increases

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Theory of Machine
The partial balancing of reciprocating parts in locomotives produces

Hammer blow
Swaying couple
Variation in tractive force along the line of stroke
All of these

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

10°-15°
15°-25°
25°-30°
30°-40°

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Theory of Machine
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The distance between fixed pivots of crank and followers is

95 mm
Slightly more than 95 mm
45 mm
Slightly less than 95 mm

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Theory of Machine
The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left turn. The effect of gyroscopic couple acting on it will be

To raise the bow and stern
To lower the bow and stern
To raise the bow and lower the stern
To raise the stern and lower the bow

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Theory of Machine
Klein's construction can be used to determine acceleration of various parts when the crank is at

Inner dead centre
Outer dead centre
Right angles to the link of the stroke
All of the listed here

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