Semiconductor Diode

11. A zener diode has __________

1. one pn junction
2. two pn junctions
3. three pn junctions
4. none of the above

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12. A zener diode has __________ breakdown voltage

1. undefined
2. sharp
3. zero
4. none of the above

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13. A zener diode is __________ device

1. a non-linear
2. a linear
3. an amplifying
4. none of the above

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14. A zener diode is always __________ connected.

1. reverse
2. forward
3. either reverse or forward
4. none of the above

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15. A zener diode is destroyed if it __________

1. is forward biased
2. is reverse biased
3. carrier more than rated current
4. none of the above

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16. A zener diode is used as __________

1. an amplifier
2. a voltage regulator
3. a rectifier
4. a multivibrator

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17. A zener diode utilizes __________ characteristics for its operation.

1. forward
2. reverse
3. both forward and reverse
4. none of the above

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18. An ideal crystal diode is one which behaves as a perfect __________ when forward biased.

1. conductor
2. insulator
3. resistance material
4. none of the above

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19. For the same secondary voltage, the output voltage from a centretap rectifier is __________ than that of bridge rectifier

1. twice
2. thrice
3. four time
4. one-half

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20. If the a.c. input to a half-wave rectifier is an r.m.s value of 400/√2 volts, then diode PIV rating is __________

1. 400/√2 V
2. 400 V
3. 400 x √2 V
4. none of the above

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