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Electronic Principles

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

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

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Electronic Principles
Which one of the following properties of a magnetic circuit can be directly compared to resistance in an electrical circuit?

Retentivity
Reluctance
There is no valid comparison
Permeance
Permeability

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

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Electronic Principles
The saturation point is approximately the same as

infinity
lower end of the load line
cutoff point
None of these
upper end of the load line

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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
None of these
7.75 µA
7.8 µA
10.3 µA

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Electronic Principles
Reducing the amount of current through an inductor:

multiplies the value of inductance by four
multiplies the value of inductance by two
has no effect on the inductance
None of these
reduces the value of inductance by one-half

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