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Electronic Devices and Circuits

Electronic Devices and Circuits
Light dependent resistors are

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

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

2 eV
5 eV
10 eV
0.78 eV

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Electronic Devices and Circuits
If too large current passes through the diode

Diode will emit light
All holes will freeze
Excessive heat may damage the diode
All electrons will leave

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Electronic Devices and Circuits
In a half wave rectifier, the load current flows

Only for the negative half cycle of the input signal
For less than fourth cycle
Only for the positive half cycle of the input signal
For full cycle

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Electronic Devices and Circuits
In the sale of diamonds the unit of weight is carat. One carat is equal to

150 mg
500 mg
100 mg
200 mg

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

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

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