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Electronic Principles

Electronic Principles
Most AC power is obtained from:

oscillators
generators
lightning
batteries
None of these

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Electronic Principles
The nucleus of the copper atom contains how many protons?

None of these
4
1
29
18

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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?

16 V
8 V
3 V
7.5 V
None of these

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Electronic Principles
Which one of the following devices is most often used for measuring electrical potential difference?

Ohmmeter
Voltmeter
None of these
Ammeter
Wattmeter

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Electronic Principles
A device that converts thermal energy to electrical energy is called a:

chemical cell
solar cell
piezoelectric devices
None of these
thermocouple

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

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

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