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Machine Design

Machine Design
The sleeve or muff coupling is designed as a

Hollow shaft
Thick cylinder
Dun cylinder
Solid shaft

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Machine Design
A tapered key which fits in a key way in the hub and the bottom of which is shaped to fit the curved surface of the shaft, is known as,

None of these
Soft key
Hollow key
Hollow saddle key

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Machine Design
Fabric belts are used in industrial applications because

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

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Machine Design
Aircraft body is usually fabricated by

Riveting
Casting
Pre-casting
Welding

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Machine Design
The face angle of a bevel gear is equal to

Pitch angle + addendum angle
Pitch angle + dedendum angle
Pitch angle - addendum angle
Pitch angle - dedendum angle

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Machine Design
A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where σ = Stress for a plate with no hole i.e. nominal stress)

σ [1 + (3a/b)]
σ [1 + (b/2a)]
σ [1 + (2a/b)]
σ [1 + (b/3a)]

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