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Electronic Devices and Circuits

Electronic Devices and Circuits
In a bipolar transistor, the emitter base junction has

Reverse bias
Zero or reverse bias
Forward bias
Zero bias

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Electronic Devices and Circuits
Piezoelectric quartz crystal resonators find application where

Rectification of the signal is required
Modulation of signal is required
Signal frequency control is required
Signal amplification is required

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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
Light dependent resistors are

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

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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

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

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Electronic Devices and Circuits
Work function is the maximum energy required by the fastest electron at 0 K to escape from the metal surface.

True
False

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