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Electronic Principles

Electronic Principles
The barrier potential accross each depletion layer is

0.8 V
None of these
20 V
0.7 V

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Electronic Principles
Doubling the operating frequency of a capacitive circuit:

None of these
cuts the capacitive reactance in half
multiplies the capacitive reactance by 6.28
has no effect on the capacitive reactance
doubles the amount of a capacitive reactance

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Electronic Principles
What is one important thing transistors do?

Regulate voltage
Emit light
Rectify line voltage
None of these
Amplify weak signals

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Electronic Principles
What is the inductive reactance of a 2-H coil operating at 60 Hz?

60 Ohm
754 Ohm
120 Ohm
None of these
30 Ohm

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Electronic Principles
Which one of the following devices is most often used for measuring opposition to current flow in a circuit?

Ohmmeter
Voltmeter
Ammeter
None of these
Wattmeter

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Electronic Principles
The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the:

rotor
commutator
None of these
armature
battery

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