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Machine Design

Machine Design
According to Indian standards, total numbers of fundamental deviations are

15
25
20
10

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Machine Design
Deep groove ball bearings are used for

Radial load at high speed
Heavy thrust load only
Small angular displacement of shafts
Combined thrust and radial loads at high speed

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

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

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Machine Design
For applications involving high stresses in one direction only the following type of thread would be best suited

ISO metric thread
Buttress thread
Square thread
Acme thread

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Machine Design
Creep in belt is due to

Material of the belt
Material of the pulley
All of these
Uneven extensions and contractions due to varying tension

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Machine Design
The endurance limit in shear of carbon steel can be obtained by multiplying the endurance limit in flexure by a factor of

0.65
0.75
0.45
0.55

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MORE MCQ ON Machine Design

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