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Electronic Principles

Electronic Principles
Suppose the voltage from a power outlet is 120 Vrms. What is the peak voltage?

170 V
100 V
120 V
None of these
180 V

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Electronic Principles
The equivalent of 1 micro A is:

one million amperes
None of these
one-millionth of an ampere
1000 A
10000A

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

photodiode
None of these
nicad cell
solar cell
piezoelectric device

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Electronic Principles
What is the turns ratio for the transformer specified in the above question?

None of these
10.738
0.575
0.707
1.5

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Electronic Principles
A typical light switch in your home is a:

toggle switch
None of these
rotary switch
knife switch
momentary push button switch

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Electronic Principles
Which one of the following equations most directly leads to the resistance of an ordinary household light bulb, assuming that you know the power and voltage rating?

None of these
I = P/E
R = E2/P
P = PR
P = E2/R

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