Question

What is the formula for the rotor bar skew angle?

(a) rotor bar skew angle = 3.14 / rotor slot pitches through which bars are skewed * (no of rotor slots / number of poles)

(b) rotor bar skew angle = 3.14 * rotor slot pitches through which bars are skewed * (no of rotor slots * number of poles)

(c) rotor bar skew angle = 3.14 * rotor slot pitches through which bars are skewed / (no of rotor slots * number of poles)

(d) rotor bar skew angle = 3.14 * rotor slot pitches through which bars are skewed / (no of rotor slots / number of poles)

The question was asked in quiz.

Enquiry is from Parameters topic in chapter Design of Single Phase Induction Motor of Design of Electrical Machines

Answer 1

The correct answer is (d) rotor bar skew angle = 3.14 * rotor slot pitches through which bars are skewed / (no of rotor slots / number of poles)

Best explanation: The rotor slot pitches through which bars are skewed, number of rotor slots and number of poles are calculated. On substitution the rotor bar skew angle is obtained.