Question

What is the formula for the depth of the yoke?

(a) depth of yoke = thickness/2

(b) depth of yoke = thickness

(c) depth of yoke = 2*thickness

(d) depth of yoke = 3*thickness

The question was asked by my college professor while I was bunking the class.

Query is from Frames of D.C. & A.C. Machines in section Aspects of Design of Mechanical Parts of Design of Electrical Machines

Answer 1

Correct option is (b) depth of yoke = thickness

Explanation: The depth of yoke is equal to the thickness of the yoke. It is calculated to give the required cross-section for the magnetic circuit.