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Electronic Principles

Electronic Principles
Who invented the first junction transistor?

None of these
Shockley
Smith
Gomes
Fisher

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Electronic Principles
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with an inductor that has a reactance of 200 W?

77.7 ohm
89.3 ohm
224 ohm
None of these
88.8 ohm

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

collector current
supply current
None of these
emitter current
base current

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Electronic Principles
1 Microfarad is the same as:

1000 millifarads
1 million farads
None of these
1 millionth of a picofarad
1 million picofarads

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Electronic Principles
The knee voltage of a diode is approximately equal to the

Forward voltage
Breakdown voltage
Applied voltage
Barrier potential
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?

30 Ohm
None of these
10 Ohm
100 Ohm
20 Ohm

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