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Semiconductor E...

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  • Question 1
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    Which of the following is not an ac parameter of a transistor?

  • Question 2
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    What is the voltage gain in a common emitter, where input resistance is 3Ω and the load resistance is 24Ω, β = 0.6​

  • Question 3
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    An oscillator is nothing but an amplifier with:

  • Question 4
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    The output characteristic for a common emitter transistor is shown in the given figure.

    Use the graph to find out the current amplification factor for the transistor when VCE = 2 V.​

  • Question 5
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    The power amplification for a common emitter (CE) amplifier is 22110. Its current gain is 67 and internal resistance is 200 ohm. What is the value of the of the output resistance?​

  • Question 6
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    A common emitter (CE) amplifier has a current gain of 49. The voltage drop across the collector terminal is 1.8 V. The collector resistance is 2.2 kilo-ohm. What is the base current in the CE amplifier?​

  • Question 7
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    Which of the following relations correctly shows the value of current amplification factor at a constant collector-emitter voltage?

  • Question 8
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    Transistors are useful in equipments such as hearing aids and small radio receivers because transistors :

  • Question 9
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    The input voltage applied to a cascaded amplifier (consisting of two amplifiers) is 0.02 V and the output voltage is 6 V. The voltage gain of one of the two amplifiers is 10. What is the voltage gain of the other amplifier?​

  • Question 10
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    In a common base transistor circuit, the current gain is 0.98. On changing emitter current by 5 mA, the change in collector current is​

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