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Electromagnetic Induction - Interview Questions and Answers

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31. 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
A. 50 N
B. 120 N
C. 240 N
D. 480 N
Explanation:
32. 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 ?
A. 0.01 s
B. 0.1 s
C. 0.5 s
D. 5 s
Explanation:
33. A crack in the magnetic path of an inductor will result in
A. unchanged inductance
B. increased inductance
C. zero inductance
D. reduced inductance
Explanation:
34. As per Faraday's laws of electromagnetic induction, an e.m.f. is induced in a conductor whenever it
A. lies perpendicular to the magnetic flux
B. lies in a magnetic field
C. cuts magnetic flux
D. moves parallel to the direction of the magnetic field
Explanation:
35. Which of the fpllowing inductor will have the least eddy current losses ?
A. Air core
B. Laminated iron core
C. Iron core
D. Powdered iron core
Explanation: