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Electronic Principles

Electronic Principles
Which is the most widely used semiconductor?

Silicon
All of these
None of these
Copper
Germanium

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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?

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

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Electronic Principles
What is the capacitive reactance of a 0.1 micro F capacitor that is operating at 1000 Hz?

1590 Ohm
690 Ohm
312 Ohm
None of these
less than 1 Ohm

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Electronic Principles
Norton's theorem replaces a complicated circuit facing a load by an

Ideal voltage source and series resistor
Ideal current source and parallel resistor
Ideal current source and series resistor
None of these
Ideal voltage source and parallel resistor

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Electronic Principles
Which one of the following is most likely used for measuring the rate of electron flow?

Ammeter
None of these
Wattmeter
Ohmmeter
Voltmeter

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Electronic Principles
Doubling the operating frequency of an inductive circuit:

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

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