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Electronic Devices and Circuits

Electronic Devices and Circuits
Light dependent resistors are

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

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Electronic Devices and Circuits
The sensitivity of human eyes is maximum at

Green portion of spectrum
Red portion of spectrum
Violet portion of spectrum
White portion of spectrum

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Electronic Devices and Circuits
In a semiconductor diode, the barrier offers opposition to

Holes in P-region only
Majority carriers in both regions
Majority as well as minority carriers in both regions
Free electrons in N-region only

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Electronic Devices and Circuits
Which variety of copper has the best conductivity?

Copper containing traces of silicon
Hard drawn copper
Induction hardened copper
Pure annealed copper

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Electronic Devices and Circuits
When avalanche breakdown occurs covalent bonds are not affected.

False
True

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Electronic Devices and Circuits
Free electrons exist in

Conduction band
First band
Third band
Second band

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