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Machine Design

Machine Design
The pitch diameter is the __________ diameter of an external or internal screw thread.

Effective
Largest
Smallest
None of these

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Machine Design
The coefficient of friction between the belt and pulley depends upon the

Slip of belt
Material of belt and pulley
Speed of belt
All of these

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Machine Design
The endurance limit for a mirror polished material will be __________ as compared to unpolished material.

None of these
More
Less
Same

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Machine Design
A universal coupling is used to connect two shafts

Whose axes intersect at a small angle
Which are perfectly aligned
Have lateral misalignment
Which are not in exact alignment

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Machine Design
The rivet head used for boiler plate riveting is usually

Snap head
Conical head
Pan Head
Counter sunk head

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Machine Design
The standard length of the shaft is

7 m
6 m
All of these
5 m

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