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Magnetism and Electromagnetism

Magnetism and Electromagnetism
The bar magnet has

None of the listed here
Dipole moment
Monopole moment
Both dipole and monopole moment

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Magnetism and Electromagnetism
Hysteresis loop in case of magnetically hard materials is more in shape as compared to magnetically soft materials.

None of the listed here
circular
triangular
rectangular

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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
180
90
360

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Magnetism and Electromagnetism
The main constituent of permalloy is

Cobalt
Chromium
Nickel
Tungsten

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Magnetism and Electromagnetism
Unit for quantity of electricity is

Coulomb
Ampere-hour
Joule
Ampere

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Magnetism and Electromagnetism
Materials subjected to rapid reversal of magnetism should have

High co-ercivity and high retentivity
High co-ercivity and low density
High permeability and low hysteresis loss
Large area of B-H loop

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MORE MCQ ON Magnetism and Electromagnetism

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