Electronic Principles
What are the main parts of an atom?

Electrons, protons, and ions
Electrons, protons, and neutrons
None of these
Protons only
Electrons, ions, and neutrons

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Electronic Principles
A circuit has a Norton current of 10 mA and a Norton resistance of 10 kW. What is the Thevenin circuit?

100 V and a parallel resistance of 10 k Ohm
1000 V and a series resistance of 10 k Ohm
None of these
100 V and a series resistance of 10 k Ohm
1000 V and a parallel resistance of 10 kOhm

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

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

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Electronic Principles
Waveforms are graphs that show:

None of these
amplitude on the vertical axis and frequency on the horizontal axis
frequency on the vertical axis and amplitude on the horizontal axis
the passage of time on the vertical axis and amplitude on the horizontal axis
amplitude on the vertical axis and the passage of time on the horizontal axis

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

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