Fluorescent Lamp Multiple Choice Questions and Answers

46.  The life of a fluorescent tube is affected by

   A. Low-voltage

   B. High-voltage

   C. Frequency of switching and blinking

   D. All of the above

47.  The main disadvantages of fluorescent tube's in comparison to filament lamp is

   A. High cost

   B. Noise in choke

   C. Stroboscopic effect

   D. All of the above

48.  Blinking of fluorescent tube may be on account of

   A. Low circuit voltage

   B. Loose contact

   C. Defective starter

   D. Any of the above

49.  The light of fluorescent tube appears cooler than that from an incandescent lamp. This is due to the fact that

   A. The tube consumes less power

   B. Surface area of tube is larger than that of the incandescent lamp

   C. Tungsten is not used in the tube

   D. All of the above

   E. None of the above

50.  For operation of fluorescent tube on DC supply the additional device incorporated in the Tube circuit is a

   A. Transformer

   B. Resistor

   C. Inductor

   D. All of the above

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