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Electronic Principles

Electronic Principles
What is the barrier potential of a silicon diode at room temperature?

1 V
None of these
0.3V
2 m V per degree Celsius
0.7V

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Electronic Principles
Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current?

0.4 A
None of these
0.6 A
0.2 A
0.3 A

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Electronic Principles
The Norton current is sometimes called the

None of these
Open-load current
Shorted-load current
Thevenin current
Thevenin voltage

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Electronic Principles
If the base supply voltage increases, the Q point moves

off the load line
up
nowhere
down
None of these

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Electronic Principles
Who invented the first junction transistor?

Smith
Gomes
Fisher
None of these
Shockley

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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?

0.05 mA
3.75 mA
13 mA
3.2 mA
None of these

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