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Electronic Principles

Electronic Principles
What is the power dissipation of a resistance that has 24 V dropped across it and 0.25 A flowing through it?

6 W
64 W
None of these
122 W
3 W

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Electronic Principles
Doubling the operating frequency of a capacitive circuit:

cuts the capacitive reactance in half
has no effect on the capacitive reactance
multiplies the capacitive reactance by 6.28
None of these
doubles the amount of a capacitive reactance

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

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

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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?

3890 Ohm
None of these
692.2 Ohm
844.5 Ohm
1234 Ohm

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Electronic Principles
At room temperature a conductor has low many holes?

Only those produced by thermal energy
less than the free electrons
many
None of these
Same number as free electrons

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Electronic Principles
Most AC power is obtained from:

generators
oscillators
None of these
lightning
batteries

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