Electronic Principles
Which one of the following statements most accurately applies to the frequency of a waveform?

Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz
None of these
The longer the period of a waveform, the lower its frequency
The actual frequency of a sine waveform is 1.41 times the working frequency
The higher the amplitude of a waveform, the higher its frequency

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Electronic Principles
A low-pass filter:

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

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

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

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Electronic Principles
Which one of the following statements is true for current flowing in a parallel circuit?

The total current in a parallel circuit is equal to the total voltage multiplied by the total resistance
The same current always flows through every part of a parallel circuit
The total current in a parallel circuit is always less than the smallest amount of current
The amount of current flow through each branch of a parallel circuit can be different, depending on the resistance of each branch part and the amount of voltage applied to it
None of these

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