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Electronic Principles

Electronic Principles
When the collector current increases, what does the current gain do?

increases
any of the above
stays the same
None of these
decreases

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Electronic Principles
Thevenin theorem replaces a complicated circuit facing a load by an

None of these
Ideal current source and parallel resistor
Ideal voltage source and series resistor
Ideal voltage source and parallel resistor
Ideal current source and series resistor

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Electronic Principles
A circuit has two different voltage sources that are connected in a series-opposing form. If the sources are rated at 6 V and 9 V, what is the total source voltage?

None of these
16 V
8 V
7.5 V
3 V

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Electronic Principles
A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage?

651 V
208 V
700 V
None of these
707 V

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Electronic Principles
Most AC power is obtained from:

None of these
batteries
lightning
oscillators
generators

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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?

17.5 mA
1.75 mA
175 mA
None of these
1750 mA

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