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Machine Design

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

High
Moderate
Low
None of these

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Machine Design
Fabric belts are used in industrial applications because

None of these
They are unaffected by moisture and humidity
They can work at high temperature
They are cheap

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Machine Design
The endurance limit of a material with finished surface in comparison to rough surface is

Less
More
More or less depending on quantum of load
Same

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Machine Design
The groove angle of the pulley for rope drive is usually

20°
60°
35°
45°

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Machine Design
Gears are casted by

Centrifugal casting
Sand mould casting
Permanent mould casting
Slush casting

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Machine Design
The railway carriage couplings have

Square threads
Buttress threads
Acme threads
Knuckle threads

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