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A light emitting diode is shown as...

A light emitting diode is shown as

A

3

B

4

C

2

D

1

Text Solution

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The correct Answer is:
B
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NIKITA PUBLICATION-SEMICONDUCTORS-MCQS
  1. The most commonly used semiconducting material used to prepare a solar...

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  2. LEDS used for giving infrared radiations are prepared from

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  3. A light emitting diode is shown as

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  4. A light emitting diode is

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  5. The on/off time or switching time of light emitting diodes is the orde...

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  6. A solar cell is p-n junction operating in

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  7. Barrier potential of Ga-As-P LED is

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  8. V-I characteristics of LED is similar to forward bias characteristics ...

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  9. Which of the following is advantage of LED ?

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  10. Which of the following material is used to produce infrared LED's ?

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  11. The emitter of transistor is doped the heaviest because it

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  12. A transistor is preferable to a triode valve when used in amplifier be...

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  13. The current gain of a transistor is defined as

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  14. Transistors may not replace vacuum tubes in all uses because

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  15. In n-p-n transistor, the p-type crystal acts as

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  16. A transistor is used in the common emitter mode as an amplifier . Then

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  17. Which of the following element is used in making transistors ?

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  18. In transistor symbols, the arrows shows the direction of-

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  19. In an n-p-n transistor, the emitter current is always less than the em...

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  20. In case of an n-p-n transistor, the collector current is always less t...

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