Q. Assertion (A): In n-p-n transistor conduction is mainly due to electrons.

Reason (R): In n type materials electrons are majority carriers.

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Q. The factor n in the equation for calculating current for a silicon diode is

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Q. An LED is

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Q. An enhancement mode MOSFET is on when the gate voltage is

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Q. For the n-type semiconductor with n = NP and P = ni² / ND , the hole concentration will fall below the intrinsic value because some of the holes

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Q. The main purpose of using transformer coupling in a class A amplifier is to make it more

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Q. The effective channel length of a MOSFET in saturation decreases with increase in

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Q. Which of the following element does not have three valence electrons?

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Q. Which of the following is used in the sterilization of water?

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Q. Electrons within a metal have energy levels from zero to Fermi level EF.

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Q. A 2 bit binary multiplier can be implemented using

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Q. Secondary emission results

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Q. Ohmic range of carbon composition resistors is

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Q. The depletion layer consists of immobile ions.

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Q. The output V-I characteristics of an Enhancement type MOSFET has

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Q. A Darlington emitter follower circuit is some times used in the output stage of a TTL gate in order to

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Q. Assertion (A): At room temperature the fermi level in p type semiconductor lies nearer to the valence band and in n type semiconductor it lies nearer to the conduction band.

Reason (R): At room temperature, the p type semiconductor is rich in holes and n type semiconductor is rich in electrons.

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Q. The drift velocity of electrons and holes is proportional to electric field strength.

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Q. In an n channel MOSFET, the substrate is connected

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Q. Piezoelectric materials serves as a source of

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