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Machine Design

Machine Design
The static tooth load should be __________ the dynamic load.

Less than
None of these
Greater than
Equal to

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Machine Design
The edges of a boiler plate are bevelled to an angle of

45°
60°
80°
30°

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Machine Design
The endurance or fatigue limit is defined as the maximum value of the stress which a polished standard specimen can withstand without failure, for infinite number of cycles, when subjected to

Static as well as dynamic load
Completely reversed load
Static load
Dynamic load

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Machine Design
The included angle for the British standard whitworth thread is

55°
60°
47.5°
29°

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Machine Design
Idler pulley is used for

Changing the direction of motion of belt
Increasing velocity ratio
All of these
For applying tension

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

One-half
One-third
One-fourth
Double

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