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Machine Design

Machine Design
The minimum number of teeth on the pinion which will mesh with any gear without interference for 20° full depth involute teeth will be

14
18
12
24

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Machine Design
The shock absorbing capacity of a bolt may be increased by

Decreasing its shank diameter
Tightening the bolt properly
Increasing its shank diameter
Making the shank diameter equal to core diameter of thread

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Machine Design
Aircraft body is usually fabricated by

Casting
Riveting
Welding
Pre-casting

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Machine Design
Cast iron pipes are mainly used

In pressure lubrication systems on prime movers
In water and sewage systems
For conveying steam
All of these

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Machine Design
The design of the pressure vessel is based on

None of these
Hoop stress
Longitudinal and hoop stress
Longitudinal stress

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Machine Design
Which one of the following is a positive drive?

Rope drive
Chain drive
V-belt drive
Crossed flat belt drive

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