Rectifier Multiple Choice Questions and Answers


11.  A mercury arc rectifier possesses ...............regulation characteristics


   A. Straight line

   B. Curved line

   C. Exponential

   D. All of the alarms


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A. Straight line

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12.  In a mercury arc rectifier.............flow from anode to cathode


   A. Ions

   B. Electrons

   C. Ions and electrons

   D. Any of the above


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A. Ions

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13.  In a mercury arc rectifier characteristic blue luminosity is due to


   A. Colour of mercury

   B. Ionization

   C. High-temperature

   D. Electron streams


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B. Ionization

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14.  In a three-phase mercury arc rectifier anode conducts for


   A. One third of a cycle

   B. One fourth of a cycle

   C. One half of a cycle

   D. Two third of a cycle


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A. One third of a cycle

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15.  Which of the following mercury arc rectifier will deliver least undulating current?


   A. Six phase

   B. Three phase

   C. Two phase

   D. Single phase


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A. Six phase

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