Question

What is the formula of the specific electric loading?

(a) specific electric loading = total armature ampere conductors * armature periphery at air gap

(b) specific electric loading = total flux around the air gap / area of flux path at the air gap

(c) specific electric loading = total armature ampere conductors / armature periphery at air gap

(d) specific electric loading = total flux around the air gap * area of flux path at the air gap

The question was posed to me by my school principal while I was bunking the class.

I'd like to ask this question from Relation Between Rating, Dimensions, Variation of Output of Rotating Machines topic in portion General Concepts and Constraints in Design of Rotating Machines of Design of Electrical Machines

Answer 1

Correct answer is (c) specific electric loading = total armature ampere conductors / armature periphery at air gap

Explanation: The total flux around the air gap and the area of flux path at the air gap is calculated. On substitution, the specific electric loading is calculated.