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Electronic Principles

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

Decreases
None of these
Stays the same
0oC
Increases

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Electronic Principles
Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs?

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

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Electronic Principles
How much power is being dissipated by a 1000 W resistance that has 25 V applied to it?

None of these
325 kW
0.24 W
0.625 W
80 W

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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

nowhere
None of these
off the load line
down
up

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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
0.041666666666667
None of these
9.3 W

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Electronic Principles
The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current?

14.8 µA
7.75 µA
None of these
10.3 µA
7.8 µA

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