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Which of the following statement is true...

Which of the following statement is true for a p-n-p transistor when used in an amplifier circuit?

A

The semi conductor material used to make the emitter may have been doped with arsenic

B

Most of the current carriers in the collector and emitter are holes from donor impurities

C

The emitter junction is forward biased

D

Both 2 and 3

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The correct Answer is:
D
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AAKASH SERIES-SEMICONDUCTOR DEVICES-EXERCISE -I (TRANSISTORS)
  1. A n-p-n transistor is said to be in active region of operation, when

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  2. Statement-I : For faster action, n-p-n transistor is used Statement-...

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  3. A n-p-n transistor conducts when

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  4. In a N-P-N transistor circuit, the collector current is 10 mA.If 90 % ...

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  5. In the circuit symbol of transistor the arrow on the emitter indicates

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

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

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  8. Which of the following statement is true for a p-n-p transistor when u...

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  9. In CE configuration transistor, the current gain

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  10. The transistor parameters, namely alpha and beta of a transistor are ...

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  11. In which of the configuration of a transistor , the power gain is high...

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  12. Transistor input characteristics curves are the graphs drawn with

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  13. Transistor output characteristic curves are the graphs drawn with

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  14. The circuit diagram below shows n-p-n transistor in CE configuration. ...

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  15. Consider a p-n junction as a capacitor, formed with p and n - material...

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

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  17. For a transistor amplifier, the voltage gain

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  18. An electrical device draws 0.968 kW form AC mains of 220 V.If current ...

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  19. To use a transistor as an amplifier

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  20. Transfer characteristic [output voltage (V(0)) vs input voltage (V(i))...

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