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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

0.65
0.35
0.5
0.2

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Machine Design
The root angle of a bevel gear is equal to

Pitch angle + dedendum angle
Pitch angle + addendum angle
Pitch angle - addendum angle
Pitch angle - dedendum angle

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Machine Design
In the levers of __________ type, the mechanical advantage is less than one.

Third
None of these
Second
First

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Machine Design
The difference between the upper limit and lower limit of a dimension is called

Nominal size
Basic size
Actual size
Tolerance

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Machine Design
When bevel gears connect two shafts whose axes intersect at an angle greater than a right angle and one of the bevel gears has a pitch angle of 90°, then they are known as

Mitre gears
Angular bevel gears
Internal bevel gears
Crown bevel gears

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Machine Design
Pick up wrong statement. Fatigue strength can be increased by

Grinding and lapping surface
Cold working
Hot working
Shot peening

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