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Machine Design

Machine Design
The ratio of endurance limit in shear to the endurance limit in flexure is

0.33
0.55
0.4
0.5

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Machine Design
In levers, leverage is the ratio of

Effort arm to the load arm
Load arm to the effort arm
Load lifted to the effort applied
Mechanical advantage to the velocity ratio

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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
Crown bevel gears
Internal bevel gears

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

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

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Machine Design
In nitrated parts, the origins of the fatigue cracks will occur at

Within the core
Surface
Just below the surface
None of these

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Machine Design
In order to withstand resistance to wear, the best profile of gear is

14½° stub tooth
20° full depth involute tooth
14½° full depth involute tooth
20° involute stub tooth

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