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Electronic Devices and Circuits

Electronic Devices and Circuits
Light dependent resistors are

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

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Electronic Devices and Circuits
Which one of the following is not a characteristic of a ferroelectric material?

Ferroelectric characteristic only above the curie point
High dielectric constant
No hysteresis
Electric dipole moment

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Electronic Devices and Circuits
The most commonly used semiconductor material is

None of these
Silicon
Mixture of silicon and germanium
Germanium

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Electronic Devices and Circuits
For a NPN bipolar transistor, what is the main stream of current in the base region?

Drift of holes
Diffusion of holes
Diffusion of electrons
Drift of electrons

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Electronic Devices and Circuits
Piezoelectric quartz crystal resonators find application where

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

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

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