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Consider the following statements: To control the speed of a dc shunt motor above the base speed over a reasonably wide range, the motor must 1. have compensating winding 2. have interpole winding 3. be started using a 3-point starter 4. be started using a 4-point starter Of these statements
Options:
A .   2 and 4 are correct
B .   1, 2 and 3 are correct
C .   1, 2 and 4 are correct
D .   1 and 3 are correct
Answer: Option C

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