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Electronic Principles

Electronic Principles
Who invented the first junction transistor?

Smith
Gomes
Fisher
Shockley
None of these

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Electronic Principles
What is the power dissipation of a resistance that has 24 V dropped across it and 0.25 A flowing through it?

6 W
64 W
None of these
122 W
3 W

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Electronic Principles
A device that converts mechanical into electrical energy is?

chemical cell
thermocouple
generator
None of these
solar cell

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

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

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Electronic Principles
Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA?

None of these
10.17 V
20 V
18.8 V
0.17 V

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Electronic Principles
A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current?

None of these
0.05 mA
3.2 mA
13 mA
3.75 mA

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