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Machine Design

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

15
10
20
25

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Machine Design
In Vickers hardness testing, the pyramid indentor apex is

122°
152°
40°
136°

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Machine Design
The coefficient of friction in belt drive depends upon

Material of pulley
Material of belt
Belt velocity
Materials of belt and pulley

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Machine Design
The helix angle for single helical gears ranges from

10° to 15°
15° to 20°
35° to 50°
20° to 35°

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Machine Design
In radial cams, the follower moves

In a direction parallel to the cam axis
In a direction perpendicular to the cam axis
In any direction irrespective of cam axis
Along the cam axis

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Machine Design
The power transmitted by the belt drive can be increased by

Increasing wrap angle by using idler pulley
Dressing the belt to increase the coefficient of friction
All of these
Increasing the initial tension in the belt

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