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Quiz: EDC-PN Junction Theory

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Number of Questions: 20

Question: 11 -

Two semiconductor materials have exactly the same properties except that material A has a band gap of 1.0 eV and material B has a band gap  energy of 1.2 eV . The ratio of intrinsic concentation of material A to that of material B is

Options:

  1. 2016

  2. 1048

  3. 47.5

  4. 58.23

    5. Answer:

    47.5
    Solution not available.

Question: 12 -

Dynamic resistance of a diode varies as

Options:

  1. i2

  2. i-2

  3. i-1

  4. i

    5. Answer:

    i-1
    Solution not available.

Question: 13 -

Zener diode works on the principle of

Options:

  1. Tunneling of charge carriers across the junction

  2. Diffusion of charge carriers across the junction

  3. Thermonic emission

  4. Hoping of charges across the junction

    5. Answer:

    Tunneling of charge carriers across the junction
    Solution not available.

Question: 14 -

A 1/P n junction has built in potential of 0.8 V . The depletion layer width at a reverse bias of 1.2 V is 2 μm . For a reverse bias of 7.2 V the depletion layer width will be

Options:

  1. 2 μm

  2. 4 μm

  3. 3 μm

  4. 5 μm

    5. Answer:

    4 μm
    Solution not available.

Question: 15 -

A silicon diode has a saturation current of 7.5 μA at 300 K . Calculate saturation current at 400 K .

Options:

  1. 7.9 μA

  2. 7.9 mA

  3. 7.68 mA

  4. 7.68 μA

    5. Answer:

    7.68 mA
    Solution not available.