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Electronic Principles

Electronic Principles
Positive ions are atoms that have

None of these
Gained an electron
Lost an electron
Gained a proton
Lost a proton

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Electronic Principles
What causes the depletion layer?

Barrier potential
Recombination
Doping
Ions
None of these

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Electronic Principles
Current and voltage are said to be in phase when:

their waveforms cross through zero and reach positive and negative peaks at the same time
their waveforms are both ac or both dc
None of these
All of these
they have the same amplitude and frequency

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Electronic Principles
Doubling the number of turns of wire in an inductor:

reduces the value of inductance by one-fourth
multiplies the value of inductance by four
multiplies the value of inductance by two
reduces the value of inductance by one-half
None of these

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Electronic Principles
Which one of the following is most likely used for measuring the rate of electron flow?

Voltmeter
Ohmmeter
Ammeter
Wattmeter
None of these

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Electronic Principles
What is the capacitive reactance of a 0.1 micro F capacitor that is operating at 1000 Hz?

1590 Ohm
None of these
less than 1 Ohm
690 Ohm
312 Ohm

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