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Electronic Principles

Electronic Principles
A device that converts mechanical into electrical energy is?

thermocouple
solar cell
generator
None of these
chemical cell

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Electronic Principles
An intrinsic semiconductor has some holes in it at room temperature. What causes these holes?

Doping
Valence electrons
None of these
Free electrons
Thermal energy

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Electronic Principles
How may valence electrons does a silicon atom have?

1
4
2
None of these

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Electronic Principles
If the base supply voltage increases, the Q point moves

up
nowhere
off the load line
None of these
down

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Electronic Principles
As the temperature increases, the current gain

increases
None of these
contant
can be any of the above
decreases

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Electronic Principles
A transistor has how many doped regions?

1
None of these
3
4
2

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