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

None of these
Mechanical energy
Electronical energy
Chemical energy
Solar energy

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Electronic Principles
Which one of the following statements applies to common, non-rechargeable flashlight batteries?

Common flashlight batteries are primary dry-cell batteries
Common flashlight batteries are primary wet-cell batteries
None of these
Common flashlight batteries are secondary wet-cell batteries
Common flashlight batteries are secondary dry-cell batteries

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Electronic Principles
A circuit has a Norton current of 10 mA and a Norton resistance of 10 kW. What is the Thevenin circuit?

100 V and a series resistance of 10 k Ohm
1000 V and a series resistance of 10 k Ohm
100 V and a parallel resistance of 10 k Ohm
1000 V and a parallel resistance of 10 kOhm
None of these

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Electronic Principles
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?

The voltage reverses polarity periodically
The voltage causes current to flow in two directions at the same time
The voltage remains at one polarity but changes value periodically
None of these
The voltage remains at one polarity and at a steady level

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