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Electronic Principles

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

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

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Electronic Principles
At room temperature a conductor has low many holes?

many
None of these
less than the free electrons
Only those produced by thermal energy
Same number as free electrons

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Electronic Principles
At room temperature an intrinsic semiconductor has

a few free electrons and holes
No holes
many holes
many free electrons
None of these

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Electronic Principles
A current source has an internal resistance of 100 kW. What is the largest load resistance if the current source must appear stiff?

1 k Ohm
None of these
2 k Ohm
10 k Ohm
20 k Ohm

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Electronic Principles
Doubling the operating frequency of an inductive circuit:

cuts the inductive reactance in half
doubles the amount of inductive reactance
None of these
has no effect on the inductive reactance
multiplies the inductive reactance by 6.28

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Electronic Principles
The net charge of a neutral copper atom is

1
-1
4
None of these

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