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Electronic Principles

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

40 V
0 V
60 V
36 V
None of these

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Electronic Principles
Holes act like:

Positive charges
None of these
Crystals
Atoms
Negative charges

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Electronic Principles
Inductive reactance is measured in units of:

None of these
henrys
volts per second
amperes per second
Ohm

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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?

30 V
12 V
24 V
None of these
18 V

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Electronic Principles
If a transistor operates at the middle of the load line, an increase in the current gain will move the Q point

None of these
up
down
off the load line
nowhere

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Electronic Principles
Which one of the following equations most directly leads to the resistance of an ordinary household light bulb, assuming that you know the power and voltage rating?

P = E2/R
None of these
I = P/E
P = PR
R = E2/P

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