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Machine Design

Machine Design
The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is

4
2
43832
1

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Machine Design
At low temperatures (say 75°C) the notched bar impact value of steel

Depends on heat treatment carried out
Remain same
Increases markedly
Decreases markedly

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Machine Design
In worm gears, the pressure angle is __________ the angle between two inclined faces in axial plane.

Half
Thrice
None of these
Twice

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Machine Design
Which of the following has threads at both ends?

Tap bolt
Stud
None of these
Bolt

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Machine Design
The property of a material which enables it to resist fracture due to high impact loads is known as

Elasticity
Strength
Endurance
Toughness

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Machine Design
The modulus of elasticity for mild steel is approximately equal to

210 kN/mm²
100 kN/mm²
80 kN/mm²
110 kN/mm²

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