Electronic Principles
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm?

250 Ohm
None of these
60 Ohm
99.3 Ohm
70.7Ohm

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

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

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Electronic Principles
When applying a square waveform to a capacitor, the circuit tends to:

peak both the voltage and current waveforms
round off both the voltage and current waveforms
peak the voltage and round off the current waveforms
None of these
peak the current and round off the voltage waveforms

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

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

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

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

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