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Regulated DC Power Supply - section-1
  1. A Zener diode ___________

    2. A.

     Is a battery
    B.

     Acts like a battery in the breakdown region
    C.

     Has a barrier potential of 1 V
    D.

     Is forward biased

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  2. The rupture of covalent bonds will occur when the electric field is ___________

    3. A.

     100 V/cm
    B.

     0.6 V/cm
    C.

     1000 V/cm
    D.

     More than 10⁵ V/cm

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  3. What is true about the breakdown voltage in a Zener diode?

    4. A.

     It decreases when load current increases
    B.

     It destroys the diode
    C.

     It equals current times the resistance
    D.

     It is approximately constant

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  4. A Zener diode is used as a ___________ voltage regulating device

    5. A.

     Shunt
    B.

     Series
    C.

     Series-shunt
    D.

     None of the above

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  5. A power supply which has voltage regulation of ___________ is unregulated power supply

    6. A.

     0%
    B.

     5%
    C.

     10%
    D.

     8%

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  6. Commercial power supplies have voltage regulation ___________

    7. A.

     of 10%
    B.

     of 15%
    C.

     of 25%
    D.

     within 1%

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  7. If the doping level is increased, the breakdown voltage of the Zener ___________

    8. A.

     Remains the same
    B.

     Is increased
    C.

     Is decreased
    D.

     None of the above

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  8. Another name for Zener diode is ___________ diode

    9. A.

     Breakdown
    B.

     Voltage
    C.

     Power
    D.

     Current

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  9. The current in a Zener diode is limited by ___________

    10. A.

     External resistance
    B.

     Power dissipation
    C.

     Both (A) and (B)
    D.

     None of the above

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  10. The Zener current will be minimum when ___________

    11. A.

     Load current is maximum
    B.

     Load current is minimum
    C.

     Load current is zero
    D.

     None of the above

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