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Machine Design

Machine Design
For a shaft diameter of 200 mm, the number of bolts in a marine flange coupling should be

4
10
6
8

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Machine Design
Three different weights fall from a certain height under vacuum. They will take

Same time to reach earth
None of these
Times proportional to weight to reach earth
Times inversely proportional to weight to reach earth

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

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

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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

0.6
0.2
0.25
0.5

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Machine Design
A bench vice has following type of threads

Buttress
Acme
Metric
Square

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Machine Design
The expansion joint is mostly used for pipes which carry steam at __________ pressures.

High
None of these
Low
Medium

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