Question

What is the formula for the breadth of the ac machine?

(a) breadth = 6 + 0.01 * inner diameter of frame

(b) breadth = 6 – 0.01 * inner diameter of frame

(c) breadth = 6 * 0.01 * inner diameter of frame

(d) breadth = 6 / 0.01 * inner diameter of frame

The question was asked by my school teacher while I was bunking the class.

The origin of the question is Frames of D.C. & A.C. Machines in portion Aspects of Design of Mechanical Parts of Design of Electrical Machines

Answer 1

The correct option is (a) breadth = 6 + 0.01 * inner diameter of frame

The explanation: The breadth of the ac machines also depends upon the inner diameter of the frame. On substituting the values the breadth is calculated.