Electronic Principles
An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current?

68.4 mA
34.4 mA
24.2 mA
28.4 mA
None of these

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Electronic Principles
What is a free electron?

An electron that has no electrical charge
An electron that costs nothing
An electron that has been freed from its parent atom
An electron that has twice the amount of charge of a normal electron
None of these

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

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

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

The total voltage of a series circuit is equal to the total current divided by the total resistance
The total voltage is equal to the sum of the individual voltages in a series circuit
None of these
The total voltage in a series circuit is equal to the average value of the individual voltages
The total voltage in a series circuit is always less than the value of the smallest voltage

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