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Machine Design

Machine Design
If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to

0.5
0.25
0.2
0.6

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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
24
18
12

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Machine Design
For longitudinal joint in boilers, the type of joint used is

Butt joint with double cover plate
Any one of the above
Lap joint with one ring overlapping the other
Butt joint with single cover plate

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Machine Design
The cross-section of the arm of a bell crank lever is

Any one of these
Elliptical
I-section
Rectangular

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Machine Design
Which of the following has threads at both ends?

Bolt
Tap bolt
Stud
None of these

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Machine Design
The deflection of a cantilever beam under load W is 8. If its width is halved, then the deflection under load W will be

44047
43869
43929
44045

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