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Electronic Principles

Electronic Principles
How many protons does the nucleus of a silicon atom contain?

29
None of these
48
4
14

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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?

24 V
None of these
12 V
18 V
30 V

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Electronic Principles
Most AC power is obtained from:

lightning
oscillators
generators
None of these
batteries

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Electronic Principles
Holes act like:

Negative charges
None of these
Positive charges
Atoms
Crystals

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Electronic Principles
Norton's theorem replaces a complicated circuit facing a load by an

Ideal current source and series resistor
Ideal voltage source and parallel resistor
Ideal voltage source and series resistor
Ideal current source and parallel resistor
None of these

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Electronic Principles
Silicon atoms combine into an orderly pattern called a

Valence orbit
None of these
Crystal
Semiconductor
Covalent bond

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