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Electronic Principles

Electronic Principles
If the current gain is 200 and the collector current is 100 mA, the base current is

0.083333333333333
2 mA
200 A
None of these
0.5 mA

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Electronic Principles
What kind of battery is most likely included in a cordless electric knife?

None of these
Mercury-cell battery
Lead-acid battery
Nicad battery
Zinc-carbon battery

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Electronic Principles
What is one important thing transistors do?

Rectify line voltage
None of these
Emit light
Regulate voltage
Amplify weak signals

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Electronic Principles
What is the inductive reactance of a 0.1-H coil that is operating at 1000 Hz?

444 Ohm
100 Ohm
Less than 1 Ohm
None of these
628 Ohm

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Electronic Principles
Doubling the number of turns of wire in an inductor:

reduces the value of inductance by one-fourth
None of these
reduces the value of inductance by one-half
multiplies the value of inductance by two
multiplies the value of inductance by four

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Electronic Principles
The total impedance of a series RLC circuit:

always increases as the applied frequency increases
None of these
is minimum at the resonant frequency
is maximum at the resonant frequency
always decreases as the applied frequency increases

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