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Magnetism and Electromagnetism

Magnetism and Electromagnetism
The magnetism left in the iron after exciting field has been removed is known as

residual magnetism
susceptance
reluctance
permeance

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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
A basic one-loop dc generator is rotated at 90 rev/s. How many times each second does the dc output voltage peak (reach maximum)?

270
360
90
180

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Magnetism and Electromagnetism
The change of cross-sectional area of conductor in magnetic field will affect

resistance of conductor
both of the listed here
None of these
reluctance of conductor

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Magnetism and Electromagnetism
A permeable substance is one

Which is a strong magnet
Which is a bad conductor
Through which the magnetic lines of force can pass very easily
Which is a good conductor

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Magnetism and Electromagnetism
In the left hand rule, forefinger always represents

magnetic field
Voltage
direction of force on the conductor
current

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MORE MCQ ON Magnetism and Electromagnetism

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