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Electronic Principles

Electronic Principles
The rotating coil of wire in an electric motor is called the:

None of these
brush
loop
commutator
armature

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Electronic Principles
Holes are the minority carriers in which type of semiconductor?

Extrinsic
p-type
None of these
Intrinsic
n-type

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Electronic Principles
The current gain of a transistor is defined as the ratio of the collector current to the

base current
emitter current
None of these
supply current
collector current

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Electronic Principles
For normal operation of the transistor, the collector diode has to be

Reverse-biased
Operating in the breakdown region
None of these
Nonconducting
Forward-biased

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Electronic Principles
Which one of the following kinds of materials has the lowest permeability?

None of these
All of these
A diamagnetic material
A paramagnetic material
A feiTomagnetic material

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Electronic Principles
What are the main parts of an atom?

Electrons, protons, and ions
Protons only
Electrons, protons, and neutrons
None of these
Electrons, ions, and neutrons

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