The gradient on which an additional engine is required to negotiate the gradient, is called
A)Momentum gradient
B)Pusher gradient
C)Ruling gradient
D)Steep gradient

Question

Quizplus · Accepted Answer

The gradient that requires an additional engine to assist a train in climbing is known as the "Pusher gradient." This term comes from the practice of using an extra locomotive, often referred to as a "pusher" or "banker," to push trains from behind over steep sections of track.

The Gradient on Which an Additional Engine Is Required to Negotiate