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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

reluctance
residual magnetism
permeance
susceptance

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Magnetism and Electromagnetism
What is the mmf of a wire with 8 turns carrying three amperes of current?

2.4 AT
0.24 AT
240 AT
24 AT

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Magnetism and Electromagnetism
If the steel disk in a crankshaft position sensor has stopped with the tab in the magnet's air gap, the induced voltage

Is zero
None of the listed here
Increase
Decrease

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Magnetism and Electromagnetism
The ability of a material to remain magnetized after removal of the magnetizing force is known as

hysteresis
permeability
reluctance
retentivity

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Magnetism and Electromagnetism
What is the magneto-motive force (mmf) of a wire with 8 turns carrying three amperes of current?

240 At
2.4 At
2,400 At
24 At

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Magnetism and Electromagnetism
What is the flux density in a magnetic field in which the flux in 0.1 m2 is 600 Wb?

600 T
6,000 T
600 T
6 T

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MORE MCQ ON Magnetism and Electromagnetism

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