Q1. Explain why it is necessary that the incoming alternator frequency is greater than the bus bar?
Q2. Illustrate the term dark and bright lamp method for the synchronizing? Explain how is the connection is made?
Q3. Apart from the renewing bearings is there any cause for opening up motors for the maintenance?
Q4. What do you mean by magnetic contactor? Where it is employed?
Q5. What do you mean by relay? How is it distinct from the magnetic contactor?
Q6. Can you draw the DOL starter circuit?
Q7. Illustrate the meaning of the term overload?
Q8. What is the meaning of short circuit?
Q9. Illustrate how is the protection given for OL and SC?
Q10. Illustrate the meaning of the terms Star winding or Delta winding?