Question

The effect of a planetary gear set fitted between the motor and drive pinion 1. modifies the speed characteristics only 2. modifies the torque characteristics only 3. modifies the speed and torque characteristics 4. has no effect on the speed or torque characteristics

Answer 1

Explanation:

A numerically higher axle ratio provides a mechanical advantage to send more of the engine's available torque to the rear tires (and front tires, in a four-wheel drive vehicle), but you pay the price at the fuel pump. So, a truck with optional 3.73 gears will tow a heavier trailer than one with 3.55 or 3.21.

Lower gears have a bigger radius thus applying more torque (torque equals the cross product of force and displacement vectors). Also, output power=torque*angular speed. Hence assuming the same speed a lower gear will produce more power, as simple as that