ECE :: Electronic Devices and Circuits
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Assertion (A): In a BJT, adc is about 0.98.
Reason (R): In a BJT, recombination in base region is high.
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Wienbridge oscillator uses
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Which of the following material is preferred for transformer cores operating in micro wave frequency range?
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Photoelectric emitters in photo tubes are generally made of
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Assertion (A): Power transistors are more commonly of silicon npn type.
Reason (R): The fabrication of silicon npn transistors is easy.
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In N-type semiconductor
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The addition of n type impurity to intrinsic material creates allowable energy levels.
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Which of the following elements act as donor impurities?
- Gold
- Phosphorus
- Boron
- Antimony
- Arsenic
- Indium
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