The train value of a gear train is

Solution (By Examveda Team)

The train value of a gear train is equal to the velocity ratio of a gear train.

Train Value: This is the measure of how the rotational speed changes from one gear to another in the gear train. It is defined as the product of the gear ratios of all the gears in the train.

Velocity Ratio: The ratio of the angular velocities of the driving gear to the driven gear in a gear train. It is the reciprocal of the gear ratio, but when calculating the overall effect in a series of gears, it directly reflects the train value.

Always greater or less than unity: The train value or velocity ratio can be greater than, less than, or equal to unity depending on the configuration of the gear train. The key point is that the train value equals the velocity ratio.