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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

18
24
12
14

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Machine Design
According to Indian standard specifications, plain carbon steel designated by 40C8 contains carbon

0.35 to 0.45%
None of these
0.40 to 0.60%
0.20 to 0.40%

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Machine Design
In static loading, stress concentration is more serious in

Ductile materials
Brittle as well as ductile materials
Elastic materials
Brittle materials

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Machine Design
A bench vice has following type of threads

Acme
Buttress
Square
Metric

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Machine Design
A cotter joint is used to connect two __________ rods.

Parallel
Perpendicular
Co-axial
None of these

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Machine Design
A spring of stiffness 1000 N/m is stretched initially by 100 mm from the undeformed position. The work required to stretch it by another 100 mm is

10 N-m
7 N-m
15 N-m
5 N-m

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