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Machine Design

Machine Design
The groove angle of pulleys for V-belt is

420 to 450
300 to 320
340 to 360
More than 400

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Machine Design
In block brakes, the ratio of shoe width to wheel diameter is taken between

0.25 and 0.50
0.1 and 0.25
0.75 and 1
0.50 and 0.75

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Machine Design
The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be

4 times more
Same in both cases
3 times more
2 times more

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Machine Design
The modulus of elasticity for mild steel is approximately equal to

100 kN/mm²
80 kN/mm²
110 kN/mm²
210 kN/mm²

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Machine Design
In a multiple V-belt drive, if one of the belts break, then

The entire set of belts is replaced
The broken belt and the belt on either side of it, is replaced
Only the broken belt is replaced
The broken belt need not to be replaced

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Machine Design
Eye bolts are used for

Transmission of power
Lifting and transportation of machines and cubicles
Absorbing shock and vibrations
Foundation purposes

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