Question

What is tractive efficiency?

(a) Input power – Output power

(b) Input power + Output power

(c) \(\frac{Output \, Power}{Input \, Power} \)

(d) Output power * Input Power

This question was posed to me during an online exam.

Origin of the question is Traction and Traction Theory in section Farm Tractor of Farm Machinery

Answer 1

The correct option is (c) \(\frac{Output \, Power}{Input \, Power} \)

The best explanation: Tractive efficiency is the ratio of the drawbar power to axle power and can be estimated wen the slip is known. TE of a wheel can be predicated using a series of equations that take into account tire dimensions, soil conditions, slip, etc. It is the ratio of output power to input power, expressed in percentage.