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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Temporary magnets are used in

Generators
All of the listed here
Motors
Loud speakers

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Magnetism and Electromagnetism
The commonly used material for shielding or screening magnetism is

Aluminium
Soft iron
Copper
Brass

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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)?

360
270
180
90

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Magnetism and Electromagnetism
The induced voltage across a stationary conductor in a stationary magnetic field is

zero
increased
decreased
reversed in polarity

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Magnetism and Electromagnetism
Gilbert is a unit of

magnetomotive force
permittivity
electromotive force
conductance

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Magnetism and Electromagnetism
Degaussing is the process of

Demagnetising metallic parts
Removal of magnetic impurities
Removing gases from the materials
Remagnetising metallic parts

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MORE MCQ ON Magnetism and Electromagnetism

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