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Electronic Devices and Circuits

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

False
True

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Electronic Devices and Circuits
Hall effect is observed in a specimen when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is

Antiparallel to magnetic field
In the direction of current
Normal to both current and magnetic field
In arbitrary direction

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Electronic Devices and Circuits
The depletion layer width of Junction

Increases with heavy doping
Is independent of applied voltage
Is increased under reverse bias
Decreases with light doping

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

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

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Electronic Devices and Circuits
Free electrons exist in

Conduction band
Third band
Second band
First band

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

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

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