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Electronic Principles

Electronic Principles
How may valence electrons does a silicon atom have?

1
2
4
None of these

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Electronic Principles
If a load resistance is 1 kW, a stiff current source has a resistance of

Less than 100 k Ohm
At least 10 Ohm
None of these
More than 100 k Ohm
Less than 10 Ohm

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Electronic Principles
A device that converts mechanical into electrical energy is?

None of these
generator
chemical cell
thermocouple
solar cell

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Electronic Principles
What form of energy is used to maintain an imbalance of charges between the terminals of a battery?

None of these
Solar energy
Electronical energy
Chemical energy
Mechanical energy

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Electronic Principles
A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have?

410 Ohm
400 Ohm
None of these
310 Ohm
550 Ohm

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Electronic Principles
Which one of the following is most likely used for measuring the rate of electron flow?

Ohmmeter
Ammeter
None of these
Voltmeter
Wattmeter

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