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Machine Design

Machine Design
In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be

17
25
21
15

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

Low
High
Moderate
None of these

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Machine Design
Crushing resistance required to crush the rivet per pitch length is

n.d.t.σc
(p - d) t.σc
p.t.σc
p.d.σc

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Machine Design
Which of the following key is preferred for the condition when a large amount of impact type torque is to be transmitted in both direction of rotation?

Gib-head key
Tangent key
Woodruff key
Feather key

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Machine Design
In a flat belt drive, if the slip between the driver and belt is 1 %, between the belt and follower is 3% and driver and follower pulley diameters are equal, then velocity ratio of the drive will be

0.96
0.98
0.99
0.97

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Machine Design
The resultant axial load on a bolt depends upon

Initial tension due to tightening of the bolt
All of these
Relative elastic yielding of the bolt and the connected members
External load applied

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