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Mention a few semiconductors employed in...

Mention a few semiconductors employed in the fabrication of solar cells.

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Silicon (`E_(g)` = 1.1eV,) GaAs (`E_(g)` = 1.43eV), CdTe (`E_(g)` = 1.45 eV) and `"CuInSe"_(2)` (`E_(g)` = 1.04 eV).
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SUBHASH PUBLICATION-SEMICONDUCTOR ELECTRONICS-TWO MARKS QUESTIONS WITH ANSWERS
  1. Define current gain at a constant V("CE") and V("BE").

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  2. What is meant by input and output resistance of a transistor amplifier...

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  3. Mention a few semiconductors employed in the fabrication of solar cell...

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  4. Explain a typical p-n juction solar cell with a neat labelling

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  5. Draw I-V characteristics of a solar cell.

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  6. Draw a labelled diagram for a N-P-N transistor showing the necessary D...

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  7. Draw DC bias condition for a PNP transistor.

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  8. Show the circuit arrangement for studying the input and output charact...

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  9. Draw a neat labelled diagram of a transistor amplifier in a CE mode.

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  10. Explain briefly Barkhausen's criteria.

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  11. Distinguish between positive feedback and negative feed back.

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  12. What is Boolean algebra?

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  13. Give the logic symbol, Boolean expression and truth table of an AND ga...

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  14. Write the symbol and truth table for a logic NOT gate

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  15. Give the logic symbol, Boolean expression and truth table of a NAND ga...

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  16. Give the logic symbol, Boolean expression and truth table of a NOR gat...

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  17. Write the Boolean equation for a NOR gate and a NAND gate

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  18. Name the two types of integrated circuits.

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  19. How are electron-hole pairs created in a semiconductor?

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  20. When does electron-hole recombination take place?

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