☰ Electrical Machine Design (Electrical Engineering) - MCQs

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Q7.

_______ depends on leakage reactance in an induction motor

  • A. starting current
  • B. starting torque
  • C. maximum torque
  • D. all of the above
    ✍ Discuss    
Q8.

under short circuit conditions, the power factor of a synchronous machine is

  • A. 1
  • B. about 0.8 lagging
  • C. almost zero lagging
  • D. 0.5
    ✍ Discuss    
Q9.

synchronous machine with longer air gap will have

  • A. lower stability limit
  • B. smaller unbalanced magnetic pull
  • C. higher noise level
  • D. poor ventilation
    ✍ Discuss    
Q10.

use of higher specific electrical loading in synchronous machines reduces

  • A. copper losses
  • B. synchronizing power
  • C. synchronous reactance
  • D. stray load losses
    ✍ Discuss    
Q11.

the slot leakage flux is more in case of

  • A. open type of slots
  • B. semi closed slots
  • C. closed slots
  • D. open slots with aluminium conductors
    ✍ Discuss    
Q12.

overload capacity of a transformer depends on

  • A. supply frequency
  • B. core size
  • C. both a and b
  • D. none of these
    ✍ Discuss    
❖ Sub Categories
➣ DC Basics and Networks ➣ Electromagnetic Field Theory ➣ Electrical Engineering Material ➣ DC Machines ➣ Synchronous Machines ➣ Induction Machines ➣ AC Basics and Networks ➣ Transmission and Distribution of Electrical Power ➣ Electrical Energy Utilisation and Electric Traction ➣ Electrical Installation and Wiring ➣ Basic Electronics Engineering ➣ Analog Electronics ➣ Digital Electronics ➣ Microprocessors ➣ Electronic and Electrical Measurements and Instruments
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