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Machine Design

Machine Design
When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is

0.35
0.65
0.2
0.5

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Machine Design
Resistance to fatigue of a material is measured by

Young's modulus
Coefficient of elasticity
Endurance limit
Elastic limit

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Machine Design
Allen bolts are

Self locking bolts
Used in aircraft application
Designed for shock load
Provided with hexagonal depression in head

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Machine Design
In skew bevel gearing, the axes of shafts are

Non-intersecting and nonparallel and the teeth are curved
Non-intersecting and non-parallel and the teeth are straight
Intersecting and the teeth are curved
None of these

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Machine Design
The notch angle of the Izod impact test specimen is

30°
20°
45°
10°

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Machine Design
The taper on a rectangular sunk key is

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

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