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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
60 V
36 V
None of these
0 V

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Electronic Principles
The transistor has a current gain of 175. If the base current is 0.1 mA, what is the collector current?

1.75 mA
1750 mA
None of these
175 mA
17.5 mA

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Electronic Principles
The graph of current gain versus collector current indicates that the current gain

equals the collector current divided by the base current
varies slightly
None of these
varies enormously
is contant

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Electronic Principles
An intrinsic semiconductor has some holes in it at room temperature. What causes these holes?

Valence electrons
Doping
None of these
Thermal energy
Free electrons

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Electronic Principles
A typical light switch in your home is a:

toggle switch
rotary switch
knife switch
None of these
momentary push button switch

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Electronic Principles
What is the total resistance of a series circuit that contains four resistors having values of 220W, 470W, 1W, and 1.2W?

None of these
3890 Ohm
844.5 Ohm
692.2 Ohm
1234 Ohm

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