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ECE · all questions

Electronic Devices And Circuits
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The forbidden energy gap between the valence band and conduction band will be least in case of

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

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Assertion (A): A JFET can be used as a current source.
Reason (R): In beyond pinch off region the current in JFET is nearly constant.

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For a P-N diode, the number of minority carriers crossing the junction depends on

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An electron in the conduction band

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What is the necessary a.c. input power from the transformer secondary used in a half wave rectifier to deliver 500 W of d.c. power to the load?

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A thermistor is a

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In an ideal diode there is no breakdown, no __________ current, and no forward __________ drop.

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The dynamic resistance of a forward biased p-n diode

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Each cell of a static Random Access memory contains

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Power diodes are generally

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Silicon is not suitable for fabrication of light emitting diodes because it is

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When avalanche breakdown occurs covalent bonds are not affected.

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Which variety of copper has the best conductivity?

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Free electrons exist in

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In a half wave rectifier, the load current flows

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Assertion (A): In p-n-p transistor collector current is termed negative.
Reason (R): In p-n-p transistor holes are majority carriers.

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How many free electrons does a p type semiconductor has?

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Light dependent resistors are

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In a bipolar transistor, the emitter base junction has

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