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Machine Design

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

152°
40°
136°
122°

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Machine Design
The objective of 'crowning' of the flat pulleys of belt drive is to

Increase the power transmission capacity
Prevent the belt from running off the pulley
Increase the belt velocity
Prevent the belt joint from damaging the belt surface

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Machine Design
The ratio of driving tensions in V-belt drives is __________ flat belt drives.

Equal to
sin α times more than
cosec α times more than
sin α times less than

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Machine Design
The taper on a rectangular sunk key is

1 in 16
1 in 32
1 in 100
1 in 48

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Machine Design
The valve rod in a steam engine is connected to an eccentric rod by

Bolted joint
Cotter joint
Knuckle joint
Universal coupling

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Machine Design
The power transmitted by belt drive depends upon

Initial belt tension
Belt velocity
All of these
Arc of contact

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