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Electronic Principles

Electronic Principles
If N1/N2 = 2, and the primary voltage is 120 V, what is the secondary voltage?

60 V
40 V
0 V
None of these
36 V

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Electronic Principles
An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current?

24.2 mA
28.4 mA
34.4 mA
None of these
68.4 mA

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Electronic Principles
A device that converts mechanical into electrical energy is?

solar cell
thermocouple
None of these
generator
chemical cell

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Electronic Principles
Who invented the first junction transistor?

Gomes
Shockley
None of these
Fisher
Smith

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Electronic Principles
How much current flows through a 60-W light bulb that is operating at 120 V?

None of these
180 A
0.5A
7200 A
0.083333333333333

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Electronic Principles
As the temperature increases, the current gain

None of these
contant
can be any of the above
decreases
increases

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