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Electronic Devices and Circuits

Electronic Devices and Circuits
In a bipolar transistor, the base collector junction has

Zero or forward bias
Reverse bias
Zero bias
Forward bias

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Electronic Devices and Circuits
The amount of photoelectric emission current depends on

Both frequency and intensity of incident radiation
Frequency of incident radiation
None of these
Intensity of incident radiation

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Electronic Devices and Circuits
For a NPN bipolar transistor, what is the main stream of current in the base region?

Diffusion of electrons
Drift of holes
Drift of electrons
Diffusion of holes

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Electronic Devices and Circuits
Free electrons exist in

Second band
First band
Conduction band
Third band

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Electronic Devices and Circuits
A transistor has a current gain of 0.99 in the CB mode. Its current gain in the CC mode is

100
0.99
99
1.01

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Electronic Devices and Circuits
Forbidden energy gap in germanium at 0 K is about

0.78 eV
10 eV
5 eV
2 eV

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