Q1. Explain the principle of operation of synchronous Motors with a simple sketch. Where are synchronous motor used onboard? (16)
Q2. Sketch and describe the method of speed control of synchronous motors by variable frequency. State the advantages of this method over the other methods of speed control. (16)
Q2. a) What are the differences between synchronous and induction motor? (6)
b) What do you understand by the term ‘slip’? (4)
c) How do you check continuity of a circuit? Explain the process in brief. (6)
Q2. State the application of the synchronous motors. Discuss how a synchronous motor can function as a synchronous capacitor. Compare synchronous motors with induction motor drives (16)
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