Electronic Principles
A device that converts mechanical pressure to electrical energy is called a:

None of these
solar cell
photodiode
nicad cell
piezoelectric device

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

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

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

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

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