DC motor MCQ Quiz

  1. If the back emf of a DC motor vanishes suddenly, What will happen ?
  2. ________________part will surely tell that given motor is DC motor and not an AC type.
  3. Sparking is discouraged ______________ in a DC motor.
  4. Torque developed by a DC motor depends upon -
  5. Which of the following is used for A three-point starter.
  6. If DC motor is used without starter, What will happen ?
  7. ________________D.C. motor is preferred for elevators ?
  8. In case-the conditions for maximum power for a D.C. motor are established, the efficiency of the motor will be
  9. In a D.C. generator, the iron losses mainly take place in -
  10. in which types of D.C. motor, dynamic braking is generally used ?
  11. The armature torque of a dc motor is a function of its -
  12. The brush voltage drops in dc in / of the order of ____________________ .
  13. D.C. series motors are used in ____________________ .
  14. Hopkinson’s test on D.C. machines is conducted at -
DC motor MCQ

Take DC motor Quiz To test your Knowledge

Below are few DC motor MCQ test that checks your basic knowledge of DC motor. This DC motor Test contains around 20 questions of multiple choice with 4 options. You have to select the right answer to a question. You can see the correct answer by clicking view answer link.

  • The motor will stop
  • The motor will run noisy
  • The armature may burn
  • The motor will continue to run
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  • Winding
  • Commutator
  • Shaft
  • Stator
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  • discouraged
  • incouraged
  • increase
  • discrease
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  • magnetic field
  • current flow through the conductors
  • active length of the conductor
  • Current, active length, no. of conductors, magnetic field al
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  • Shunt, compound and series motors
  • Shunt motor
  • Shunt as well as compound motors
  • Not for DC motors
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  • Heavy sparking at brushes
  • Will not start at all
  • Depends on load
  • It’ll start smoothly
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  • Series motor
  • Cumulative compound motor
  • Shunt motor
  • Differential compound motor
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  • 100%
  • around 90%
  • anywhere between 75% and 90%
  • less than 50%
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  • commutator
  • yoke
  • armature conductors
  • armature rotor
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  • Series motors
  • Shunt motors
  • Compound motors
  • All of the above
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  • Field flux alone
  • peed alone
  • Speed alone
  • Both field flux and armature current
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  • 2 V
  • 10 V
  • 20 V
  • 40 V
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  • where constant operating speed is needed
  • where load is constant
  • none of the above situations
  • where load changes frequently
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  • no-load
  • part load
  • full-load
  • overload
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  • Electric traction
  • Cranes
  • Elevators
  • Lathe machines
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  • part load
  • no-load
  • full-load
  • overload
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  • Armature
  • Split rings
  • Slip rings
  • Field magnets
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  • Triangular
  • Cylindrical
  • Rectangular
  • Square
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  • Fleming’s left hand rule
  • Fleming’s right hand rule
  • both 1 & 2
  • All of the above
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  • 30 to 40
  • 20 to 30
  • 10 to 20
  • 0 to 10
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