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Electronic Principles

Electronic Principles
If N1/N2 = 2, and the primary voltage is 120 V, what is the secondary voltage?

0 V
40 V
60 V
None of these
36 V

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Electronic Principles
1 Microfarad is the same as:

1 million farads
1000 millifarads
None of these
1 million picofarads
1 millionth of a picofarad

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Electronic Principles
The value of a capacitor can be made larger by:

None of these
decreasing the area of the plates
increasing the voltage applied to the plates
increasing the frequency of the applied voltage
increasing the area of the plates

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Electronic Principles
Suppose a current source has an Ideal current of 10 mA and an internal resistance of 20 MW. For what values of load resistance will the current source appear stiff?

200 k Ohm or more
None of these
200 k Ohm or less
20 k Ohm or more
20 km or less

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

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

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Electronic Principles
A loadstone is:

a temporary magnet
a natural magnet
None of these
an artificial magnet
a paramagnetic alloy

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