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Machine Design

Machine Design
The constant factor in case of R10 series of preferred numbers is

1.58
1.06
1.26
1.12

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Machine Design
The allowable static stress for steel gears is approximately __________ of the ultimate tensile stress.

One-third
Double
One-fourth
One-half

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

Surface
Within the core
None of these
Just below the surface

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Machine Design
The building up of worn and undersized parts, subjected to repeated loads by electroplating is

Has no effect as regards fatigue strength
Extremely hazardous
Best method
Cheapest method

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Machine Design
The ratio of pitch circle diameter in millimeters to the number of teeth, is called

Circular pitch
Module
None of these
Diametral pitch

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Machine Design
The radial distance of a tooth from the pitch circle to the top of the tooth is called

Dedendum
Clearance
Addendum
Working depth

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