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Machine Design

Machine Design
Belt slip may occur due to

Driving pulley too small
Heavy load
Loose belt
All of these

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Machine Design
The longitudinal joint in boilers is used to get the required

Efficiency of boiler
Diameter of boiler
Length of boiler
Length and diameter of boiler

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Machine Design
When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be _________ the bearing modulus.

10 times
15 times
5 times
20 times

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Machine Design
When a load W is applied suddenly on a bar of cross-sectional area A, the stress induced in the bar will be

2W/A
3W/A
W/A
W/2A

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Machine Design
The ball bearings are, usually, made from

High speed steel
High carbon steel
Low carbon steel
Medium carbon steel

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Machine Design
The lead angle of a worm is 22.5°. Its helix angle will be

90°
67.5°
45°
22.5°

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