Electronic Principles
If a load resistance is 1 kW, a stiff current source has a resistance of

Less than 10 Ohm
None of these
More than 100 k Ohm
At least 10 Ohm
Less than 100 k Ohm

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Electronic Principles
The total impedance of a parallel RLC circuit:

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

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Electronic Principles
Which one of the following statements is true for the currents in a series RC circuit?

The current always has the same amplitude and phase for every part of the circuit
The total current is equal to the sum of the currents for the resistance and capacitance
The total current is greater than the sum of the currents for the resistance and capacitance
None of these
The total current is less than the sum of the currents for the resistance and capacitance

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Electronic Principles
The period of a waveform is:

None of these
the number of cycles completed in one second
the time required to complete one full cycle
the time required for the voltage to rise from 10% to 90% of the peak amplitude
equal to 0.707 times the peak amplitude

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