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Magnetism and Electromagnetism

Magnetism and Electromagnetism
What will be the current passing through the ring shaped air cored coil when number of turns is 800 and ampere turns are 3200?

12
8
4
6

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Magnetism and Electromagnetism
Unit for quantity of electricity is

Joule
Ampere
Coulomb
Ampere-hour

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Magnetism and Electromagnetism
The susceptibility of paramagnetic materials generally lies between

KT4 and KT8
KT3 and 1CT6
10"2 and KT5
1CT3 and 1CT7

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

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

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Magnetism and Electromagnetism
The main constituent of permalloy is

Nickel
Chromium
Cobalt
Tungsten

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Magnetism and Electromagnetism
The attraction capacity of electromagnet will increase if the

Flux density decreases
Flux density increases
Core length increases
Core area increases

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MORE MCQ ON Magnetism and Electromagnetism

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