☰ Electrical Energy Utilisation and Electric Traction (Electrical Engineering) - MCQs

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Q25.

An elevator drive is required to operate in

  • A. one quadrant only
  • B. two quadrants
  • C. three quadrants
  • D. four quadrants

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Q26.

DC motors are still preferred for use in

  • A. electric excavators, steel miles and cranes
  • B. lathes and machine tools
  • C. flour mills and jaw crushers
  • D. paper industry

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Q27.

The selection of an electric motor is governed by

  • A. nature of lo to be handled
  • B. environmental conditions
  • C. nature of electric supply available
  • D. all of the above

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Q28.

The main drawback of electric drive is that

  • A. it is cumbersome drive
  • B. it is costlier in initial as well as maintenance cost
  • C. electric power supply failure makes the drive stand still
  • D. all of the above

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Q29.

The basic elements of an electric drive are

  • A. electric motor and conversion equipment
  • B. electric motor and transmission system
  • C. electric motor, transmission and control system
  • D. the transmission and control system

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