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Machine Design

Machine Design
Ball bearing type screws are found in following application

Aeroplane engines
Crane
Steering mechanism
Screw jack

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Machine Design
The steel pulleys are __________ in weight than cast iron pulleys of the same capacity.

None of these
Moderate
Lighter
Heavier

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Machine Design
The power transmitted by the belt drive can be increased by

All of these
Increasing wrap angle by using idler pulley
Dressing the belt to increase the coefficient of friction
Increasing the initial tension in the belt

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Machine Design
When carbon in the cast iron is principally in the form of graphite, the cast iron will be of

Grey colour
Yellow colour
White colour
Brown colour

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Machine Design
A pressure vessel is said to be a thick shell, if the ratio of wall thickness to its diameter is

Equal to 1/10
None of these
Less than 1/10
Greater than 1/10

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Machine Design
The radial distance from the __________ to the clearance circle is called working depth.

None of these
Pitch circle
Addendum circle
Dedendum circle

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