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Electronic Devices and Circuits

Electronic Devices and Circuits
At room temperature the current in an intrinsic semiconductor is due to

Electrons
Holes and electrons
Ions
Holes

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

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

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Electronic Devices and Circuits
Light dependent resistors are

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

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

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

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Electronic Devices and Circuits
Permalloy is

A variety of stainless steel
A nickel an iron alloy having high permeability
A polymer
A conon-ferrous alloy used in aircraft industry

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Electronic Devices and Circuits
Which of the following could be the maximum current rating of junction diode by 126?

10 A
20 A
1 A
100 A

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