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?

24.2 mA
None of these
28.4 mA
68.4 mA
34.4 mA

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

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

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Electronic Principles
When a parallel RLC circuit is operating at its resonant frequency:

inductive reactance is equal to the capacitive reactance
capacitive reactance is greater than the inductive reactance
inductive reactance is greater than the capacitive reactance
the difference between inductive and capacitive reactance is equal to the resistance
None of these

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Electronic Principles
Which one of the following statements applies to common, non-rechargeable flashlight batteries?

Common flashlight batteries are primary dry-cell batteries
Common flashlight batteries are primary wet-cell batteries
Common flashlight batteries are secondary dry-cell batteries
Common flashlight batteries are secondary wet-cell batteries
None of these

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