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Machine Design

Machine Design
For maximum power, the velocity of the belt will be

√(T/2m)
None of these
√(T/m)
√(T/3m)

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Machine Design
In the levers of first type, the mechanical advantage is ________ one.

Less than
More than
None of these
Equal to

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Machine Design
A screw is specified by its

Major diameter
Minor diameter
Pitch diameter
Pitch

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Machine Design
A shaft coupling should

Transmit full power of the shaft
All of these
Be easy to connect or disconnect
Hold the shafts in perfect alignment

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Machine Design
18/8 steel contains

18% chromium and 8% nickel
18% vanadium and 8% nickel
18% nickel and 8% chromium
18% nickel and 8% vanadium

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

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

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