☰ Induction Machines (Electrical Engineering) - MCQs

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Q25.

the losses that occur in induction motor are

  • A. stator or rotor copper loss
  • B. stator iron loss
  • C. winding and friction losses
  • D. all of the above
    ✍ Discuss    
Q26.

the starting torque of a square cage induction motor is

  • A. very large
  • B. very low
  • C. slightly more than full load torque
  • D. zero
    ✍ Discuss    
Q27.

the direction of rotor current produced in an induction motor can be determined by

  • A. lenz law
  • B. induction law
  • C. Fleming's right hand rule
  • D. Fleming's left hand rule
    ✍ Discuss    
Q28.

in a slip ring induction motor, the frequency of rotor currents can be measured with a

  • A. galvanometer
  • B. wattmeter
  • C. DC moving coil Milli voltmeter
  • D. none of the above
    ✍ Discuss    
Q29.

the slip of an induction motor normally does not depend on

  • A. rotor speed
  • B. synchronous speed
  • C. shaft torque
  • D. core loss component
    ✍ Discuss    
Q30.

synchronous speed is defined as the speed at which the the the

  • A. stator magnetic field rotates
  • B. rotor rotates on no load
  • C. rotor rotates on full load
  • D. none of the above
    ✍ Discuss    
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