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Machine Design

Machine Design
The usual clearance provided in hydrodynamic bearing per mm of diameter of shaft is

0.01 micron
1 micron
10 microns
0.1 micron

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Machine Design
In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set in order to

Ensure proper alignment
Ensure uniform loading
Reduce vibration
Reduce slip

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Machine Design
A machine part subjected to _________ is called a strut.

An axial tensile force
An axial compressive force
Any one of these
A tangential force

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Machine Design
According to I.B.R., the efficiency of a double riveted butt joint with double cover straps of equal width should be

45 to 60%
70 to 83%
80 to 90%
63 to 70%

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Machine Design
When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the

Thread
Shank
Middle
Head

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Machine Design
A screw is said to be over hauling screw, if its efficiency is

Less than 50%
Equal to 50%
None of these
More than 50%

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