Question

What is the relation between total iron loss for induction motors and the sum of stator tooth and core loss?

(a) total iron loss for induction motors = 1.3-2.3 times the sum of stator tooth and core loss

(b) total iron loss for induction motors = 1.4-2.4 times the sum of stator tooth and core loss

(c) total iron loss for induction motors = 1.5-2.5 times the sum of stator tooth and core loss

(d) total iron loss for induction motors = 1.3-2 times the sum of stator tooth and core loss

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

The above asked question is from Operating Characteristics topic in portion Design of Single Phase Induction Motor of Design of Electrical Machines

Answer 1

Correct option is (c) total iron loss for induction motors = 1.5-2.5 times the sum of stator tooth and core loss

Best explanation: The total iron loss for induction motors is 1.5-2.5 times the sum of stator tooth and core loss. The total iron loss is due to fundamental frequency flux.