+1 vote
in Machine Kinematics by (38.0k points)
The contact ratio for gears is

(a) zero

(b) less than one

(c) greater than one

(d) none of the mentioned

This question was addressed to me during an interview.

The doubt is from Spur Gears in section Toothed Gearing & Gear Trains of Machine Kinematics

1 Answer

0 votes
by (87.2k points)
The correct answer is (c) greater than one

To elaborate: The ratio of the length of arc of contact to the circular pitch is known as contact ratio i.e. number of pairs of teeth in contact.

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