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Machine Design

Machine Design
Which one of the following is a positive drive?

Rope drive
Crossed flat belt drive
V-belt drive
Chain drive

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Machine Design
Deep groove ball bearings are used for

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

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Machine Design
The temperature at which the new grains are formed in the metal is known as

Lower critical temperature
Upper critical temperature
None of these
Recrystallization temperature

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Machine Design
If two springs are in parallel then their overall stiffness will be

None of these
Same
Double
Half

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

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

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Machine Design
A steel containing 0.8% carbon is known as

Hypereutectoid steel
Eutectoid steel
None of these
Hypo-eutectoid steel

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