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Electronic Devices and Circuits

Electronic Devices and Circuits
The most commonly used semiconductor material is

Germanium
Mixture of silicon and germanium
Silicon
None of these

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Electronic Devices and Circuits
Power diodes are generally

Either of the above
None of these
Germanium diodes
Silicon diodes

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

Zero or reverse bias
Zero bias
Reverse bias
Forward bias

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Electronic Devices and Circuits
Silicon is not suitable for fabrication of light emitting diodes because it is

Direct band gap semiconductor
Wideband gap semiconductor
Narrowband gap semiconductor
An indirect band gap semiconductor

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Electronic Devices and Circuits
Piezoelectric quartz crystal resonators find application where

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

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Electronic Devices and Circuits
Which of the following has highest resistivity?

Paraffin wax
Mineral oil
Air
Mica

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