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Machine Design

Machine Design
The material used for brake lining should have __________ coefficient of friction.

None of these
Low
High
Moderate

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Machine Design
When the length of the journal is equal to the diameter of the journal, then the bearing is said to be a

Long bearing
Medium bearing
Short bearing
Square bearing

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Machine Design
The helix angle for double helical gears may be made up to

90°
60°
75°
45°

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Machine Design
A screw is said to be over hauling screw, if its efficiency is

Equal to 50%
None of these
More than 50%
Less than 50%

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Machine Design
The velocity of sliding __________ the distance of the point of contact from the pitch point.

Does not depend upon
Is inversely proportional to
Is equal to cos φ multiplied by
Is directly proportional to

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Machine Design
According to Indian standards, total numbers of tolerance grades are

8
18
12
20

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