ECE :: Electronic Devices and Circuits
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For an P-N-P transistor in normal operation its junction are biased as
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A FET is to be operated as voltage variable resistor. For this drain to source voltage VDS should be,
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Assertion (A): FET has characteristics very similar to that of pentode.
Reason (R): Both FET and pentode are voltage controlled devices.
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The current gain of a bipolar transistor drops at high frequencies because of
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In an intrinsic semiconductor, the intrinsic charge concentration at any absolute temperature T is proportional to
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The conductivity of an intrinsic semiconductor is (symbols have the usual meanings).
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For radiating ultraviolet rays, LEDs use
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Addition of a small amount of antimony to germanium will result in
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