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Electronic Devices and Circuits

Electronic Devices and Circuits
Light dependent resistors are

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

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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

1.01
0.99
100
99

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

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

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Electronic Devices and Circuits
In which of these is reverse recovery time nearly zero?

Tunnel diode
Schottky diode
Zener diode
PIN diode

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

All of these
Semiconductors
Metals
Insulators

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