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Magnetism and Electromagnetism

Magnetism and Electromagnetism
What is the magnetomotive force (mmf) of a wire with 8 turns carrying three amperes of current?

2,400 At
24 At
2.4 At
240 At

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Magnetism and Electromagnetism
The Biotsavart's law is a general modification of

Kirchhoff's law
Ampere's law
Faraday's laws
Lenz's law

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Magnetism and Electromagnetism
Air gap has_______eluctance as compared to iron or steel path

zero
lower
higher
little

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Magnetism and Electromagnetism
What is the magneto-motive force (mmf) of a wire with 8 turns carrying three amperes of current?

24 At
2,400 At
2.4 At
240 At

ANSWER DOWNLOAD EXAMIANS APP

Magnetism and Electromagnetism
The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is

inversely proportional to I
proportional to distance between the conductors
proportional to 7
proportional to X

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Magnetism and Electromagnetism
The ability of a material to remain magnetized after removal of the magnetizing force is known as

hysteresis
retentivity
reluctance
permeability

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