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Electronic Principles

Electronic Principles
The number of free electrons and holes in intrinsic semiconductor increases when the temperature

None of these
Decreases
Increases
Stays the same
0oC

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Electronic Principles
In a transistor operates at the middle of the load line, an increase in the base resistance will move the Q point

down
None of these
up
nowhere
off the load line

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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?

28.4 mA
24.2 mA
68.4 mA
None of these
34.4 mA

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Electronic Principles
A transistor has how many doped regions?

1
3
None of these
2
4

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Electronic Principles
A dielectric material is:

a good conductor
a poor conductor of electrostatic fields
a good insulator
a good conductor of magnetic fields
None of these

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Electronic Principles
Which one of the following equations most directly determines the power dissipation of a resistance when you know the power dissipation of a resistance when you know the voltage drop and current?

P = I2R
I = P/E
P = E2/R
P = IE
None of these

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