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when NPN transistor is used as an amplif...

when NPN transistor is used as an amplifier then ……….

A

Electrons move from collector to base

B

Holes move from collector to base

C

Holes move from base to collector

D

Electrons move from emitter to base

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The correct Answer is:
D
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AAKASH INSTITUTE-SEMICONDUCTOR ELECTRONICS (MATERIAL, DEVICES AND SIMPLE CIRUITS )-Assignment section -C (Previous years type question)
  1. In a zener diode, break down occurs in reverse bias due to

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  2. In a p-n junction, depletion region contains

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  3. If a full wave rectifier circuit is operating from 50 Hz mains, the fu...

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  4. The peak voltage in the output of a half-wave diode rectifier fed with...

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  5. when NPN transistor is used as an amplifier then ……….

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  6. An oscillator is nothing but an amplifier with

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  7. The correct relationship between the two current gains alpha and beta ...

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  8. The transfer ration of a transistor is 50. The input resistance of th...

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  9. For a common emitter circuit if l(C)/l(E) = 0.98 then current gain for...

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  10. A p-n-p transistor is said to be in active region of operation, When

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  11. A transistor -oscillator using a resonant circuit with an inductor L (...

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  12. A p-n-p transistor is said to be in active region of operation, When

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  13. A transistor has a current amplification factor of 60. In a CE amplifi...

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  14. In the use of transistor as an amplifier

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  15. In a common emitter configuration base current is 40 mu A and current ...

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  16. Which of the following gates will have an output of 1

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  17. The output of OR gate is 1

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  18. write the truth table and bolean expresion of AND gat.

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  19. what is NOR gate ? write the truth table and boolean expression.

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  20. Which of the following is the boolean expression for XOR gate?

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