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Machine Design

Machine Design
For general industrial machinery, the ratio of the length of journal to its diameter is taken as

3 to 5
5 to 10
0.5 to 1
1 to 2

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Machine Design
The sleeve or muff coupling is designed as a

Solid shaft
Thick cylinder
Dun cylinder
Hollow shaft

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Machine Design
In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)

1.5 d
2.5 d
1 d
2 d

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Machine Design
The stress in the bar when the load is applied suddenly is __________ as compared to the stress induced due to gradually applied loads.

Double
Same
Four times
Three times

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Machine Design
The gears are termed as medium velocity gears, if their peripheral velocity is

30-50 m/s
15-30 m/s
1-3 m/s
3-15 m/s

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Machine Design
The size of a cam depends upon

Pitch circle
Base circle
Pitch curve
Prime circle

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