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Magnetism and Electromagnetism

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

Increase
Decrease
Is zero
None of the listed here

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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
retentivity
permeability
reluctance

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Magnetism and Electromagnetism
The voltage induced across a certain coil is 200 mV. A 120 resistor is connected to the coil terminals. The induced current is

120 mA
16 mA
12 mA
1.7 mA

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Magnetism and Electromagnetism
When the north poles of two bar magnets are brought close together, there will be

a force of repulsion
a downward force
a force of attraction
no force

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Magnetism and Electromagnetism
The direction of a magnetic field within a magnet is

back to front
from south to north
front to back
from north to south

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Magnetism and Electromagnetism
Substances which have permeability less than the permeability of free space are known as

Ferro magnetic material
Diamagnetic material
Bipolar
Paramagnetic material

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MORE MCQ ON Magnetism and Electromagnetism

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