Q1. a) Write a short note on the principle of operation of induction motors (8)
b) What is slip for an induction motor? (4)
c) If a 6-pole motor is supplied at 60Hz and runs with a slip of 5%. What is the actual rotor speed? (4)
Q2. Describe how the starting torque of electric induction motors may be improved by using EACH of the following:
(a) Wound rotor; (5)
(b) Double cage. (5)
Q3. a) Write a short note on the principle of operation of induction motors (8)
c) If a 4-pole motor is supplied at 60Hz and runs with a slip of 5%. What is the actual rotor speed? (4)
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