Objective Questions on Zener Diode

1. Which of following is not an essential element of a dc power supply?

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2. What is true about the breakdown voltage in a zener diode?

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3. Which of these is the best description of a zener diode?

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4. A zener diode

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5. The voltage across the zener resistance is usually

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6. If the series resistance increases in an unloaded zener regulator, the zener current

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7. In the second approximation, the total voltage across the zener diode is the sum of the breakdown voltage and the voltage across the

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8. The load voltage is approximately constant when a zener diode is

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9. In a loaded zener regulator, which is the largest current?

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10. If the load resistance increases in a zener regulator, the zener current

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11. When the source voltage increases in a zener regulator, which of these electric current remain approximately constant ?

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12. If the zener diode in a zener regulator is connected with the wrong polarity, the load voltage will be closest to

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13. A voltage regulator is a circuit which

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14. The percentage voltage regulation of voltage supply providing 100 V unloaded and 95 V at full load is

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15. Which of the following voltage regulator is preferred for providing large values of load current?

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16. The main job of a voltage regulator is to provide a nearly __________________ output voltage.

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17. A 10 V dc regulator power supply has a regulation of 0.005 %. The output voltage will vary within an envelope of __________________ milivolt.

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18. An ideal voltage regulator has a voltage regulation of

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19. In a zener diode shunt voltage regulator, the diode regulates so long as it is kept in ______________________ condition.

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20. A transistor series voltage regulator is called emitter follower regulator because the emitter of the pass transistor follows the ________________________ voltage.

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