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Electronic Principles

Electronic Principles
Suppose the voltage from a power outlet is 120 Vrms. What is the peak voltage?

None of these
180 V
100 V
120 V
170 V

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Electronic Principles
The rise time of a pulse waveform is the time required for the voltage to rise:

None of these
from zero to its peak value
from 10% of the peak value to 90% of the peak value
from 10% of the peak value to 70.7% of the peak value
from zero to its rms value

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Electronic Principles
Suppose a voltage source has an ideal voltage of 15V and a source resistance of 0.2W. For what values of load resistance will the voltage source appear stiff?

30 Ohm
100 Ohm
20 Ohm
10 Ohm
None of these

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Electronic Principles
What is the inductive reactance of a 0.1-H coil that is operating at 1000 Hz?

Less than 1 Ohm
None of these
444 Ohm
628 Ohm
100 Ohm

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

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Electronic Principles
A flashlight battery has internal resistance of 1W. For what values of load resistance does the flashlight battery appear stiff?

60 Ohm
None of these
50 Ohm
10 Ohm
100 Ohm or more

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