working principle of pn junction diode with simulation/animation ....etc

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Fabrication of P-N JUNCTION DIODE



BASIC SEMICONDUCTOR
1.1 Semiconductor:-
A semiconductor is a material that has an electrical conductivity between that of a conductor and an insulator. Conductors have very low resistivity (10-2 to 10-8 m) insulator have very high resistivity (>10-2 m), while semiconductors have intermediate values. Semiconductor has resistivity values of order 105 to 100 m.
A semiconductor, such as silicon, has properties somewhere between those of ....etc

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I WANT VIVA QUESTONS AND ITS ANSWERS FOR PN JUNCTION DIODE EXPERIMENT? ....etc

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P-N JUNCTION DIODE
OBJECTIVE
1. describe the electrical properties of semiconductors and distinguish between p-type and n-type material;
2. explain the formation of a depletion layer at a p-n junction;
3. discuss the flow of current when the p-n junction diode is forward-biased or reverse-biased;
4. discuss the I-V characteristic of the p-n junction diode.
5. use the diode for half-wave rectification;
6. use the bridge rectifier (4 diodes) for full-wave rectification;
7. represent half-wave and full-wave ....etc

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Physics Lab Viva Voce

(1) Torsional Pendulum :
(1) Define Rigidity of modulus ?
Ans : When tangential surface forces are applied on a body , the successive layers of the material are moved or sheared.This type of strain is called shearing strain. The ratio of tangential stress to shearing strain is called Rigidity of modulus
Rigidity of modulus= Tangential stress / shearing strain.
Tangential stress = Force/Area.
Shearing strain=
(2) Define Moment Of Inertia ?
Ans : It is the measure of the inertia of a body in rot ....etc

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Question 71Back to Top
Question: List the uses of solar cells.

Answer: A Solar cells or solar cell panels are used in:
1) Artificial satellites and in space probes like Mars orbiters
2) Wireless transmission systems or TV relay stations in remote locations
3) Traffic signals, calculators and in toys

Question 72Ba ....etc

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What is the effect of temperature on on p-n junction diode????? ....etc

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P-N junction diode is the most fundamental and the simplest electronics device. When one side of an intrinsic semiconductor is doped with acceptor i.e, one side is made p-type by doping with n-type material, a p-n junction diode is formed. This is a two terminal device.
The effect described in the previous tutorial is achieved without any external voltage being applied to the actual PN junction resulting in the junction being in a state of equilibrium. However, if we were to make electrical connections at the ends of both the N-type and the P- ....etc

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