Electrical Drives and Controls (EDC) MCQs | Page - 8

Dear candidates you will find MCQ questions of Electrical Drives and Controls (EDC) here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

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Mr. Dubey • 97.30K Points
Coach

Q. The value of slip at which maximum torque occurs

  • (A) r2÷x2
  • (B) 4r2÷x2
  • (C) 2r2÷x2
  • (D) r2÷3x2
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M

Mr. Dubey • 97.30K Points
Coach

Q. devices were used for voltage control applications.

  • (A) cycloconverters
  • (B) vacuum tubes
  • (C) tap changing transformer
  • (D) induction machine
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M

Mr. Dubey • 97.30K Points
Coach

Q. applications.

  • (A) power generation
  • (B) electric heating
  • (C) conveyor belt motion
  • (D) power transmission
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M

Mr. Dubey • 97.30K Points
Coach

Q. In DC motor, which of the following part can sustain the maximum temperature rise?

  • (A) field winding
  • (B) commutator
  • (C) slip rings
  • (D) armature winding
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M

Mr. Dubey • 97.30K Points
Coach

Q. Which power is mentioned on a name plate of a motor?

  • (A) gross power
  • (B) power drawn in kva
  • (C) power drawn in kw
  • (D) output power available at the shaft
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M

Mr. Dubey • 97.30K Points
Coach

Q. The armature shaft of a DC motor must be able to withstand

  • (A) bending moment due to weight of the armature.
  • (B) any unbalanced magnetic pull on the armature core.
  • (C) twisting stains due to transmission of torque.
  • (D) bending moment, unbalanced magnetic pull and twisting stains
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M

Mr. Dubey • 97.30K Points
Coach

Q. In DC machines the residual magnetism is present. The order of residual magnetism is

  • (A) 2 to 3 per cent
  • (B) 10 to 15 per cent
  • (C) 20 to 25 per cent
  • (D) 50 to 75 per cent
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M

Mr. Dubey • 97.30K Points
Coach

Q. How many steps are involved in the construction of single phase induction motor?

  • (A) 3
  • (B) 4
  • (C) 5
  • (D) 6
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M

Mr. Dubey • 97.30K Points
Coach

Q. What kind of motor employs the skein winding made use of?

  • (A) maximum horse power single phase induction motor
  • (B) fractional horse power single phase induction motor
  • (C) minimum horse power single phase induction motor
  • (D) zero horse power single phase induction motor
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M

Mr. Dubey • 97.30K Points
Coach

Q. A three-point starter is used for

  • (A) shunt motors
  • (B) shunt as well as compound motors
  • (C) shunt, compound and series motors
  • (D) not for dc motors
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