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When a n-p-n transistor is used as an am...

When a n-p-n transistor is used as an amplifier, then

A

Electrons move from base to collector

B

Holes move from emitter to base

C

Electrons move from collector to base

D

Holes moves from base to emitter

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The correct Answer is:
b
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AAKASH INSTITUTE ENGLISH-SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS-Assignment (Section -A (Objective Type question (One option is correct))
  1. In the energy band diagram of a material shown below, the open circles...

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  2. An oscillator is nothing but an amplifier with

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  3. When a n-p-n transistor is used as an amplifier, then

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  4. If l(1),l(2),l(3) are the lengths of the emitter, base and collector o...

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  5. A common emitter amplifier gives an output of 3 V for an input of 0.01...

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  6. In a common base amplifier the phase difference the input signal volta...

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  7. In a common emitter amplifier the input signal is applied across

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  8. The concentration of impurities in a transistor is

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  9. In a transistor, the collector current is always · less then the emitt...

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  10. The minimum potential difference between the base and emitter required...

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  11. Which of the following represents NAND gate ?

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  12. The circuit is equivalent to

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  13. The output y, when all three inputs are first high and then low, will ...

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  14. A silicon specimen is made into a P-type semiconductor by dopping, on ...

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  15. Consider the junction diode is ideal. The value of current through the...

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  16. Negative feedback

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  17. The current obtained from a simple filterless rectifier is

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

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  19. In a properly biased transistor-

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  20. In an n-p-n transistor, the collector current is 10 mA. If 90% of the ...

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