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Electronic Principles

Electronic Principles
What kind of device is a diode?

None of these
Nonlinear
Unipolar
Bilateral
Linear

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Electronic Principles
The rise time of a pulse waveform is the time required for the voltage to rise:

None of these
from zero to its peak value
from 10% of the peak value to 90% of the peak value
from zero to its rms value
from 10% of the peak value to 70.7% of the peak value

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Electronic Principles
How many protons does the nucleus of a silicon atom contain?

4
29
None of these
48
14

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

photo transistor
thermocouple
photodiode
None of these
solar cell

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

None of these
120 V
180 V
100 V
170 V

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Electronic Principles
Which one of the following statements regarding ac circuits is correct?

None of these
Current lags the voltage through a resistor
Current leads the voltage through a resistor
Current and voltages are in phase through a resistor
All of these

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