Question

What is the range of the current density for the open type motors split phase, capacitor and repulsion start motors?

(a) 4-5 A per mm^2

(b) 3-4 A per mm^2

(c) 2-4 A per mm^2

(d) 1-4 A per mm^2

This question was posed to me during an online exam.

I would like to ask this question from Design of Stator topic in division Design of Single Phase Induction Motor of Design of Electrical Machines

Answer 1

The correct option is (b) 3-4 A per mm^2

Easy explanation: The minimum value of the current density for the open type motors split phase, capacitor and repulsion start motors is 3 A per mm^2. The maximum value of the current density for the open type motors split phase, capacitor and repulsion start motors is 4 A per mm^2.