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Answer :

Avalanche break down in a semiconductor diode occurs when Reverse bias exceeds a certain value

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Description : In a semiconductor diode, p-side is earthed and to n-side is applied a potential of -2 volt; the diode shall (a) Conduct (b) Not conduct (c) Conduct partially (d) Break down

Last Answer : a) Conduct

Description : Avalanche breakdown in a diode occurs when a. Potential barrier is reduced to zero. b. Forward current exceeds certain value. c. Reverse bias exceeds a certain value. d. None of these

Last Answer : c. Reverse bias exceeds a certain value.

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Last Answer : Zener effect : The electric field in the depletion layer reach a point that it can break the covalent bonds and generate electron-hole pairs. Avalanche breakdown : The minority carriers that ... field gain sufficient kinetic energy to be able to break covalent bond in atoms which they collide.

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Last Answer : Ans: A

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Last Answer : an external current-limiting resistor

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Last Answer : ∙ d. Avalanche photodiode

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Description : Avalanche diode

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Last Answer : When the temperature of a doped semiconductor is increased, its conductivity Increases.

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Last Answer : In a P type semiconductor At room temperature the hole concentration equals the acceptor concentration

Description : Do holes move in semiconductor?

Last Answer : Never,holes is just our assumption we say the vacancy of electrons is hole.hole are always remain just electrons move through it.means vacancy change in continuous manner.it look like hole are moving.

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Last Answer : Symbol of zener diode : Symbol of LED

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Last Answer : The following is not an application of varactor diode:  a) Parametric amplifier b) Frequency tuner c) Voltage controlled oscillator d) Phase shifter

Description : A light emitting diode (L.E.D.) can be made from:

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Description : A single-phase full-bridge diode rectifier delivers a load current of 10A, which is ripple free. Average and rms values of diode currents are respectively   (a) 10A, 7.07A (b) 5A, 10A (c) 5A, 7.07A (d) 7.07A, 5A

Last Answer : A single-phase full-bridge diode rectifier delivers a load current of 10A, which is ripple free. Average and rms values of diode currents are respectively 5A, 7.07A

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Last Answer : A Zener diode is operated in the Breakdown Region 

Last Answer : A Zener diode is operated in the Reverse bias around the knee of breakdown region mode as a voltage stabilizer.

Description : How can you identify a zener diode?

Last Answer : It  conducts  current  in  either  direction.

Description : How do we test a diode?

Last Answer : test

Last Answer : Applications of zener diode are : Zener diode can be use for voltage regulator. Zener diode can be use for clippers or limiters. Zener diode can be use for overvoltage protection. Zener ... reference. Zener diode can be use as transistor regulator. These are some applications of zener diode.

Description : What is the depletion region of a diode?

Last Answer : During the fussion In diode the some hole and electrons from both side created one layer at middle Its width  increase when diode is in reverse bias conditions And decreased in.forward bias conditions.

Description : How much time a diode takes to switch ON in forward bias condition.

Last Answer : t=0 sec.

Last Answer : In Reverse bias of diode when the cathode is connected to positive and anode is connected to negative very small current flows this very small current is known as leakage current of diode.

Last Answer : Diode conducts when the anode voltage is greater than the cathode voltage.

Last Answer : Diode have two terminals.

Description : What is diode?

Last Answer : Diode (1) a two-terminal device that permits the flow of electric current in only one direction. Diodes are most often constructed by abutting n-type and p-type regions of a semiconductor, ... power applications (rectifier diodes). (2) a two terminal device that conducts in only one direction.