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Electromagnetic Induction QUESTIONS AND ANSWERS

Electrical Engineering : Electromagnetic Induction QUESTIONS AND ANSWERS :: part2 : 11 to 15

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

11.An average voltage of 10 V is induced in a 250 turns solenoid as a result of a change in flux which occurs in 0.5 second. The total flux change is

20 Wb

2 Wb

0.2 Wb

0.02 Wb

12.A conductor carries 125 amperes of current under 60� to a magnetic field of 1.1 tesla. The force on the conductor will be nearly

50 N

120 N

240 N

480 N

13.A 500 turns solenoid develops an average induced voltage of 60 V. Over what time interval must a flux change of 0.06 Wb occur to produce such a voltage ?

0.01 s

0.1 s

0.5 s

5 s

14.A crack in the magnetic path of an inductor will result in

unchanged inductance

increased inductance

zero inductance

reduced inductance

15.Which of the fpllowing inductor will have the least eddy current losses ?

Air core

Laminated iron core