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Electronic Devices and Circuits

Electronic Devices and Circuits
The most commonly used semiconductor material is

Germanium
Silicon
Mixture of silicon and germanium
None of these

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Electronic Devices and Circuits
How many free electrons does a p type semiconductor has?

Only those produced by doping
Any of the above
Those produced by doping as well as thermal energy
Only those produced by thermal energy

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Electronic Devices and Circuits
For a P-N diode, the number of minority carriers crossing the junction depends on

Forward bias voltage
Potential barrier
Rate of thermal generation of electron hole pairs
None of these

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Electronic Devices and Circuits
The forbidden energy gap between the valence band and conduction band will be least in case of

Metals
Insulators
Semiconductors
All of these

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Electronic Devices and Circuits
Light dependent resistors are

Either A or B
Intrinsic semiconductor
Highly doped semiconductor
Lightly doped semiconductor

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

0.78 eV
2 eV
5 eV
10 eV

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