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Electrician Set-2
DC Motor
17

DC Motor MCQ with Answers

17) Which type of D.C motor is used for constant speed drives?

DC series motor

DC shunt motor

Differential long shunt compound motor

Differential short shunt compound motor

Answer is:

DC shunt motor

DC Motor MCQ with Answers

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Related DC Motor MCQ with Answers

18) Which type of DC motor is used in elevators?

DC series motor

DC shunt motor

DC differential compound motor

DC cumulative compound motor

Answer is:

DC cumulative compound motor

19) Which method of speed control gives below the rated speed in DC series motor?

Field diverter method

Tapped field method

Voltage control method

Armature diverter method

Answer is:

Armature diverter method

20) What is the effect, if a four point starter resistance is cutoff during running?

Motor stopped

Runs at slow speed

Runs at very high speed

Runs at reverse direction

Answer is:

Runs at slow speed

21) Why carbon composition brush requires in the armature circuit to operate the D.C motor?

Increases the starting torque

Protects from armature reaction

Protects armature from over loading

Reduces the spark in the commutator segment

Answer is:

Reduces the spark in the commutator segment

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