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Electronic Principles

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

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

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Electronic Principles
Which one of the following devices is most often used for measuring electrical potential difference?

Ohmmeter
Ammeter
Wattmeter
Voltmeter
None of these

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Electronic Principles
Suppose a voltage source has an ideal voltage of 15V and a source resistance of 0.2W. For what values of load resistance will the voltage source appear stiff?

100 Ohm
30 Ohm
10 Ohm
20 Ohm
None of these

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Electronic Principles
If a load resistance is 1 kW, a stiff current source has a resistance of

More than 100 k Ohm
Less than 10 Ohm
Less than 100 k Ohm
At least 10 Ohm
None of these

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Electronic Principles
A flashlight battery has internal resistance of 1W. For what values of load resistance does the flashlight battery appear stiff?

10 Ohm
100 Ohm or more
60 Ohm
None of these
50 Ohm

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Electronic Principles
Doubling the diameter of the coil in an inductor:

multiplies the value of inductance by four
reduces the value of inductance by one-half
None of these
reduces the value of inductance by one-fourth
multiplies the value of inductance by two

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