Electronic Principles
At cut off, the Q point is at

lower end of the load line
upper end of the load line
infinity
None of these
middle of the load line

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Electronic Principles
Doubling the operating frequency of a purely inductive circuit:

None of these
cuts the current through the inductors one-half
increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit
has no effect on the current through the inductors
doubles the amount of current through the inductors

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Electronic Principles
The total impedance of a parallel RLC circuit:

is maximum at the resonant frequency
is equal to the sum of the values of resistance, inductive reactance and capacitive reactance
always decreases as the applied frequency increases
always increases as the applied frequency increases
None of these

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

The total resistance of a parallel circuit is always less than the value of the smallest resistance
The total resistance is equal to the sum of the individual resistances in a parallel circuit.
The total resistance in a parallel circuit is equal to the average value of the individual resistances
None of these
The total resistance of a parallel circuit is equal to the total voltage

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