Q4. Explain the effect of reduced voltage on standard squirrel cage motors with respect to EACH of the following:
(i) Burn out; (ii) Starting current; (iii) Starting torque; (iv) Speed.
Q1. a) Explain the term single phasing as applied to poly phase induction motors. (4)
b) State the likely causes of single phasing and the consequences if motors are not adequately protected. (6)
c) Describe with the aid of sketches THREE methods for motor protection should single phasing occur. (6)
Q5. Write short notes on
a) short circuit protection to Induction motors (8)
b) Overload protection to induction motors (8)
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