Synchronous Motor Multiple Choice Questions and Answers
16. A synchronous motor can be started by
A.Pony Motor
B.D.C. compound winding
C.Providing damper winding
D.None of the above
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D.None of the above
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17. Mostly, synchronous motors are of
A.Alternator type machines
B.Induction type machines
C.Salient pole type machines
D.Smooth cylindrical type machines
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18. A synchronous machine is called a doubly excited machine because
A.It can be overexcited
B.It has two sets of rotor poles
C.Both its rotor and sator are excited
D.It needs twice the normal exciting current
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19. The power development by a synchronous motor will be maximum when the load angle is
A.Zero
B.450
C.900
D.1200
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20. Synchronous motor always runs at
A.The synchronous speed
B.Less than synchronous speed
C.More than synchronous speed
D.None of the above
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