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A transistor has three impurity regions ...

A transistor has three impurity regions , emitter , base and collector. Arrange them in order of increasing doping levels.

A

emitter, base and collector

B

collector, base and emitter

C

base, emitter and collector

D

base, collector and emitter

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The correct Answer is:
D
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DISHA PUBLICATION-SEMICONDUCTOR ELECTRONICS : METERIALS, DEVICES AND SIMPLE CIRCUITS-EXERCISE -1: CONCEPT BUILDER (TOPICWISE)
  1. To use a transistor as an amplifier

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  2. Current gain of a transistor in common base mode is 0.95. Its value in...

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  3. A transistor has three impurity regions , emitter , base and collector...

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  4. In a common-base amplifier, the phase difference between the input sig...

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  5. The current gain beta may be defined as

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  6. When n-p-n transistor is used as an amplifier

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  7. Which of the following relation holds true regardless of circuit confi...

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  8. If the given transistor is used as an amplifier then for input resista...

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  9. When the base current in a transistor is changed from 30 mu Ato 80 mu ...

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  10. A transistor is connected in common emitter configuration. The collect...

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  11. A pnp transistor is used in common-emitter mode in an amplifier circui...

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  12. In a npn transistor 10^(10) electrons enter the emitter in 10^(–6) ...

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  13. The current gain alpha of a transistor in common base mode is 0.995 . ...

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  14. A working transitor with its three legs marked P, Q and R is tested us...

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  15. A transistor has beta = 40. A change in base current of 100muA, produc...

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  16. A transistor has a base current of 1 mA and emitter current 90 mA. The...

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  17. In a common emitter transistor amplifier, beta=60, R(0)=5000Omega and ...

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  18. The current gain in transistor in common base mode is 0.99. To change ...

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  19. In a transistor, the change in base current from 100 muA to125 muA cau...

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  20. The output of a NAND gate is 0

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