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Semiconductor Devices Test - 58

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Semiconductor Devices Test - 58
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  • Question 1
    4 / -1
    The most commonly used material for making transistor is
  • Question 2
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    An NPN-transistor circuit is arranged as shown figure. It is

  • Question 3
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    The part of a transistor which is heavily doped to produce a large number of majority carriers, is
  • Question 4
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    For a transistor, the current amplification factor is 0.8. The transistor is connected in common emitter configuration. The change in the collector current when the base current changes by 6 mA is
    Solution

  • Question 5
    4 / -1
    In a common base amplifier circuit, calculate the change in base current if that in the emitter current is 2 mA and α = 0.98
    Solution

  • Question 6
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    In case of NPN-transistors the collector current is always less than the emitter current because
    Solution

  • Question 7
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    In a transistor circuit shown here the base current is 35µA. The value of the resistor Rb is

    Solution

  • Question 8
    4 / -1
    In a common emitter amplifier the input signal is applied across
  • Question 9
    4 / -1
    If β, RL and r are the A.C current gain, load resistance and the input resistance of a transistor respectively in CE configuration, the voltage and the power gains respectively are
  • Question 10
    4 / -1
    When NPN transistor is used as an amplifier
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