# When the axes of the first and the last wheels are co-axial, then the train is known as

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When the axes of the first and the last wheels are co-axial, then the train is known as

(a) simple train of wheels

(b) compound train of wheels

(c) reverted gear train

(d) epicyclic gear train

The question was asked in an internship interview.

Enquiry is from Minimum Number of Teeth on a Pinion for Involute Rack in Order to Avoid Interference topic in section Toothed Gearing & Gear Trains of Machine Kinematics

by (102k points)
Correct option is (c) reverted gear train

To explain I would say: When there is only one gear on each shaft, it is known as simple gear train.

When there are more than one gear on a shaft, it is called a compound train of gear.

When the axes of the first gear (i.e. first driver) and the last gear (i.e. last driven or follower) are co-axial, then the gear train is known as reverted gear train.

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