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Electronic Principles

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

Voltmeter
Ammeter
Ohmmeter
None of these
Wattmeter

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Electronic Principles
What is the power dissipation of a resistance that has 24 V dropped across it and 0.25 A flowing through it?

6 W
3 W
64 W
None of these
122 W

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Electronic Principles
A device that converts mechanical pressure to electrical energy is called a:

None of these
solar cell
photodiode
piezoelectric device
nicad cell

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Electronic Principles
The knee voltage of a diode is approximately equal to the

Applied voltage
Barrier potential
None of these
Breakdown voltage
Forward voltage

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Electronic Principles
A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage?

18 V
30 V
None of these
12 V
24 V

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Electronic Principles
What are the main parts of an atom?

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

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