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Machine Design

Machine Design
A column is known as a long column if the slenderness ratio is

40
100
70
50

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Machine Design
In a journal bearing, the load on the bearing is __________ to the axis of the journal.

Parallel
None of these
Perpendicular
Both A and B

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Machine Design
The wire ropes make contact at

Anywhere in the groove of the pulley
Sides and bottom of groove of the pulley
Sides of groove of the pulley
Bottom of groove of the pulley

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

√(T/3m)
None of these
√(T/m)
√(T/2m)

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Machine Design
The fatigue life of a part can be improved by

Polishing
Shot peening
Coating
Electroplating

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Machine Design
The permissible stress for carbon steel under static loading is generally taken as

2000-3000 kg/m²
7500-10,000 kg/cm²
3000-4000 kg/cm²
4000-4500 kg/cm²

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