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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?

None of these
6 W
64 W
3 W
122 W

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

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

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Electronic Principles
Electron current is flowing through a conductor in a direction you might describe as straight into this page. What is the direction of the resulting magnetic field?

Into this page
Out of this page
Counterclockwise
Clockwise
None of these

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Electronic Principles
The voltage across a 1N4001 is 0.93V when the current is 1A. What is the power dissipation of the diode for these values?

None of these
0.93 W
9.3 W
0.041666666666667
0.93 V

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Electronic Principles
Doubling the operating frequency of an inductive circuit:

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

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Electronic Principles
For normal operation of the transistor, the collector diode has to be

None of these
Nonconducting
Reverse-biased
Forward-biased
Operating in the breakdown region

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