This set of Electrical Machines Multiple Choice Questions & Answers (MCQs) focuses on “Singly Excited Magnetic Systems”. 1. For a toroid to extract the energy from the supply system, the flux linkages of the magnetic field must be ________
A. zero
B. changing or varying
C. constant
D. Any of the mentioned
Answer:A
This set of Electrical Machines Multiple Choice Questions & Answers (MCQs) focuses on “Singly Excited Magnetic Systems”. 1. For a toroid to extract the energy from the supply system, the flux linkages of the magnetic field must be ________
A. zero B. changing or varying C. constant D. Any of the mentioned
Explanation: dWelec=idφ=eidt, where dWelec= differential electrical energy to coupling field, and if the flux linkages are either constant or zero, i.e, dφ=0, then dWelec=0.