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Electronic Principles

Electronic Principles
A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current?

13 mA
3.2 mA
3.75 mA
0.05 mA
None of these

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

60 V
None of these
40 V
36 V
0 V

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Electronic Principles
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with an inductor that has a reactance of 200 W?

None of these
77.7 ohm
89.3 ohm
88.8 ohm
224 ohm

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Electronic Principles
As the temperature increases, the current gain

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

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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?

844.5 Ohm
692.2 Ohm
1234 Ohm
None of these
3890 Ohm

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Electronic Principles
When the graph of current versus voltage is a straight line, the device is referred to as

Active
Nonlinear
None of these
Linear
Bipolar

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