Question

What is the formula of the I^2R loss?

(a) I^2R loss = number of conductors / copper loss in each conductor

(b) I^2R loss = number of conductors + copper loss in each conductor

(c) I^2R loss = number of conductors – copper loss in each conductor

(d) I^2R loss = number of conductors * copper loss in each conductor

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This is a very interesting question from Relation Between Rating, Dimensions, Variation of Output of Rotating Machines topic in division General Concepts and Constraints in Design of Rotating Machines of Design of Electrical Machines

Answer 1

The correct answer is (d) I^2R loss = number of conductors * copper loss in each conductor

For explanation: The number of conductors and copper loss in each conductor is first calculated. On substitution the I^2R loss is obtained.