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Magnetism and Electromagnetism

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

zero
increased
reversed in polarity
decreased

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Magnetism and Electromagnetism
One telsa is equal to

1 Wb/m²
1 Wb/m
1 Wb/mm²
1 mWb/m²

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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
360
90

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Magnetism and Electromagnetism
The relative permeability is less than unity is case of

Diamagnetic material
Ferrits
Paramagnetic material
Ferromagnetic material

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Magnetism and Electromagnetism
Which of the following type of materials are not very important for engineering applications?

Paramagnetic material
Diamagnetic material
None of the listed here
Ferro magnetic material

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Magnetism and Electromagnetism
The most effective and quickest may of making a magnet from soft iron is by

The use of permanent magnet
Placing it inside a coil carrying current
Rubbing with another magnet
Induction

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MORE MCQ ON Magnetism and Electromagnetism

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