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Electronic Principles

Electronic Principles
How many types of flow are there in a semiconductor?

3
2
1
None of these

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Electronic Principles
Suppose a voltage source has an ideal voltage of 12V and an internal resistance of 0.5W. For what values of load resistance will the voltage source appear stiff?

5 Ohm
6 Ohm
None of these
100 Ohm
50 Ohm or more

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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?

Permeance
Permeability
There is no valid comparison
Reluctance
Retentivity

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Electronic Principles
What is the total resistance of a series circuit that contains four resistors having values of 220W, 470W, 1W, and 1.2W?

3890 Ohm
None of these
844.5 Ohm
1234 Ohm
692.2 Ohm

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Electronic Principles
The current gain of a transistor is defined as the ratio of the collector current to the

emitter current
supply current
collector current
base current
None of these

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Electronic Principles
When the collector current increases, what does the current gain do?

decreases
any of the above
stays the same
None of these
increases

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