DC MOTORS - Practice Mode

1) Which motor is used for traction purpose?

DC shunt motor DC compound motor DC series motor Capacitor motor

Correct Answer: DC series motor

2) Which motor is used for grinders and polishers?

DC series motor DC shunt motor Differential compound motor Cumulative compound motor

Correct Answer: DC shunt motor

3) Which instrument is used to measure insulation resistance of DC motor?

Earth tester Megger Voltmeter Ammeter

Correct Answer: Megger

4) Which is the major reason for open circuit in armature circuit of DC machine?

Over voltage Low voltage Over load Loose commulator segments

Correct Answer: Loose commulator segments

5) Which test is conducted to determine the winding earth leakage of a DC motor?

Continuity test Ground test Short circuit test Open circuit test

Correct Answer: Ground test

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