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Machine Design

Machine Design
The endurance limit in shear of carbon steel can be obtained by multiplying the endurance limit in flexure by a factor of

0.45
0.65
0.75
0.55

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Machine Design
A type of brake commonly used in motor cars is a

Band brake
Internal expanding brake
Shoe brake
Band and block brake

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Machine Design
Which of the following coupling is used to connect two shafts which have both lateral and angular misalignment?

Oldham coupling
All of these
Universal coupling
Bushed pin type coupling

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Machine Design
Endurance limit or fatigue limit is the maximum stress that a member can withstand for an infinite number of load applications without failure when subjected to

Completely reversed loading
Dynamic loading
Static loading
Combined static and dynamic loading

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Machine Design
Residual stress in materials

Becomes zero when external load is removed
Acts when external load is applied
Is independent of external loads
Is always harmful

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Machine Design
The efficiency of a riveted joint is equal to

Pc /P
Pt /P
Ps /P
Least of Pt, Ps and Pc/P

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