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Machine Design

Machine Design
The standard length of the shaft is

6 m
All of these
7 m
5 m

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Machine Design
The square threads are usually found on

Screw cutting lathes
Spindles of bench vices
Feed mechanism of machine tools
Railway carriage couplings

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Machine Design
I.S. specifies following total number of grades of tolerances

20
16
22
18

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Machine Design
The efficiency of a riveted joint is equal to

Ps /P
Least of Pt, Ps and Pc/P
Pt /P
Pc /P

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Machine Design
The ultimate strength of steel in tension in comparison to shear is in the ratio of

0.085416666666667
0.12638888888889
0.084027777777778
0.042361111111111

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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
12
18
24

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MORE MCQ ON Machine Design

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