1.

Consider a DC generator running at the rated speed of 2000 rpm, suddenly there is an insulator falls on the field circuit and breaks it. Then __________(a) the motor stops in a few rounds(b) it continues to run but as dc motor(c) it continues to run as a motor(d) none of the mentionedThis question was posed to me in an online quiz.My doubt stems from Methods of Excitation in division DC Machines of Electrical Machines

Answer»

Correct answer is (a) the motor stops in a few rounds

Easiest EXPLANATION: As the field circuit GETS broken there is interruption in the flux to the dc machine, and as a RESULT the motor stops in few SECONDS.



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