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

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

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Electronic Principles
Which one of the following statements most accurately reflects the nature of ac power?

The current in an ac circuit flows in two directions at the same time
The current in an ac circuit flows in one direction, but changes value periodically
The current in an ac circuit changes direction periodically
None of these
The current in an ac circuit flows in one direction at a steady level

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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?

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

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