☰ DC Machines (Electrical Engineering) - MCQs

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Q115.

for a linear electromagnetic circuit, the following statement is true

  • A. field energy is equal to coenergy
  • B. field energy is greater than coenergy
  • C. field energy is lesser than coenergy
  • D. coenergy is zero
    ✍ Discuss    
Q116.

For electromechanical energy conservation, a magnetic field is employed as the medium rather than electric field because

  • A. The stored energy density of practicable field strength is low in the electric field
  • B. The electric field presents insulation problem
  • C. The specific magnetic loss is more than the specific dielectric loss
  • D. None of the above
    ✍ Discuss    
Q117.

"A time varying flux causes an induced electromotive force." What law does the statement represent?

  • A. Ampere's law
  • B. Faraday's law
  • C. Len'z law
  • D. field form of Ohm's law
    ✍ Discuss    
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