Electronic Principles
When operating above its resonant frequency, a parallel RLC circuit has the characteristics of a:

None of these
parallel RLC circuit operated above its resonant frequency
parallel RC circuit
parallel RL circuit
purely resistive circuit

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Electronic Principles
A low-pass filter:

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

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