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Electronic Principles

Electronic Principles
What is the barrier potential of a silicon diode at room temperature?

None of these
1 V
0.7V
2 m V per degree Celsius
0.3V

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Electronic Principles
The voltage across a 1N4001 is 0.93V when the current is 1A. What is the power dissipation of the diode for these values?

0.93 V
0.93 W
None of these
9.3 W
0.041666666666667

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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?

24.2 mA
None of these
28.4 mA
34.4 mA
68.4 mA

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Electronic Principles
Positive ions are atoms that have

Lost an electron
Gained a proton
Gained an electron
Lost a proton
None of these

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Electronic Principles
A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current?

None of these
3.75 mA
13 mA
3.2 mA
0.05 mA

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Electronic Principles
Holes act like:

None of these
Negative charges
Atoms
Crystals
Positive charges

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