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What is logic gate ?...

What is logic gate ?

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A digital circuit which emitter allows a signal to pass through it or stops it called a gate. Such gates allow the signal to pass through it only when some logical conditions are completely satisfied. Therefore, they are called logic gates.
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MBD -HARYANA BOARD-SOLIDS AND SEMICONDUCTOR DEVICES-Objective type questions
  1. What is logic gate ?

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  2. Which type of semiconductor is obtained by mixing arsenic with silicon...

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  3. Conductivity will increase with temperature in :

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  4. What is the unit of current gain of a transistor?

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  5. Which filter circuit is better?

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  6. Zener diode is used for

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  7. What is the relation between free electrons n(e), and free holes n(h) ...

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  8. In a p-n junction depletion region has a thickness of the order of

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  9. Current gain in common-base configuration in less than 1, because :

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  10. The intrinsic semiconductor becomes an insulator at

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  11. The most commonly used material for making transistor is

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  12. How many NAND gate are used to from AND gate?

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  13. A device which converts d.c.into a.c.is called

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  14. Radiowaves of constant amplitude can be generated with

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  15. The Boolean expression for NAND gate is............

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  16. Which of the following gates corresponds to the truth table given belo...

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  17. p-n junction diode can be used as

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  18. Holes are charge carriers in

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  19. At absolute zero , Si acts as

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  20. A piece of copper and another of germanium are cooled from room temper...

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  21. What type of semiconductor is obtained by doping indium with silicon

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