Electronic Principles
The direction of conventional current flow is:

None of these
from negative to positive
from positive to negative
from neutral to positive
from left to right

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Electronic Principles
Which one of the following principles best describes the basic operation of a generator?

Current flowing through a conductor generates a magnetic field
None of these
Current is induced in a conductor that is moving through a magnetic field
Like magnetic poles repel; unlike poles attract
Like magnetic poles attract; unlike poles repel

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Electronic Principles
The total capacitive reactance of a parallel capacitor circuit is:

equal to the source voltage divided by total current
None of these
less than the capacitance value of the smallest capacitor
equal to the sum of the individual capacitance values
equal to the sum of the individual capacitive-reactance values

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Electronic Principles
A low-pass filter:

passes higher-frequency signals and reduces lower-frequency signals
has no effect on ac signals
reduces the level of all frequencies by a significant amount
passes lower-frequency signals and reduces higher-frequency signals
None of these

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