Machine Design
When bevel gears having equal teeth and equal pitch angles connect two shafts whose axes intersect at right angle, then they are known as

Angular bevel gears
Miter gears
Internal bevel gears
Crown bevel gears

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Machine Design
When a machine member is subjected to torsion, the torsional shear stress set up in the member is

Maximum at both the centroidal axis and outer surface of the member
Zero at both the centroidal axis and outer surface of the member
Maximum at the centroidal axis and zero at the outer surface of the member
Zero at the centroidal axis and maximum at the outer surface of the member

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Machine Design
The flank of the tooth is the

Surface of the tooth below the pitch surface
Width of the tooth measured along the pitch circle
Surface of the top of the tooth
Surface of the tooth above the pitch surface

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