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Machine Design

Machine Design
The size of a gear is usually specified by

Pressure angle
Pitch circle diameter
Diametral pitch
Circular pitch

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Machine Design
If a shaft made from ductile material is subjected to combined bending and twisting moment, calculations based on which one of the following failure theories will give the most conservative value?

Maximum strain energy theory
Maximum distortion energy theory
Maximum shear stress theory
Maximum principal stress theory

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Machine Design
When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the

Head
Middle
Thread
Shank

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Machine Design
A circular shaft can transmit a torque of 5 kN-m. If the torque is reduced to 4 kN-m, then the maximum value of bending moment that can be applied to the shaft is

3 kN-m
1 kN-m
2 kN-m
4 kN-m

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Machine Design
The taper on a rectangular sunk key is

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

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Machine Design
Lewis equation is applied

Only to the pinion
To weaker of the pinion or gear
Only to the gear
To stronger of the pinion or gear

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