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Machine Design

Machine Design
Which is positive drive?

V belt drive
Crossed belt drive
Flat belt drive
Timing belt

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Machine Design
A feather key is generally

Tight in both shaft and hub
Loose in shaft and tight in hub
Tight in shaft and loose in hub
Loose in both shaft and hub

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Machine Design
The fatigue life of a part can be improved by

Polishing
Shot peening
Coating
Electroplating

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Machine Design
A bolt is designed on the basis of __________ with a large factor of safety.

Direct bending stress
Direct tensile stress
Direct shear stress
Direct compressive stress

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Machine Design
The radial distance from the __________ to the clearance circle is called working depth.

Pitch circle
Addendum circle
Dedendum circle
None of these

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Machine Design
The dedendum is the radial distance from the

Pitch circle to the top of a tooth
Top of a tooth to the bottom of a tooth
Addendum circle to the clearance circle
Pitch circle to the bottom of a tooth

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