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GeneralONLINE MCQ EE

ONLINE MCQ EE-ILLUMINATION 3

Harikesh Yadav
Q21. Which of the following applications does not need ultraviolet lamps ?
 A.  Car lighting
 [Correct Answer]		  B.  Medical purposes
 [Wrong Answer]
 C.  Blue print machines
 [Wrong Answer]		  D.  Aircraft cockpit dashboard lighting
 [Wrong Answer]
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Q22. Which of the following is present inside the fluorescent tube ?
 A.  Argon and neon
 [Wrong Answer]		  B.  Argon and CO2
 [Wrong Answer]
 C.  Mercury vapour
 [Correct Answer]		  D.  Helium and oxygen
 [Wrong Answer]
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Q23. In incandescent lamps, coiled coil filaments are used for
 A.  coloured lamps
 [Wrong Answer]		  B.  higher wattage lamps
 [Wrong Answer]
 C.  gas filled lamps
 [Correct Answer]		  D.  low wattage lamps
 [Wrong Answer]
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Q24. Illumination of one lumen per square metre is called
 A.  lumen metre
 [Wrong Answer]		  B.  lux
 [Correct Answer]
 C.  foot candle
 [Wrong Answer]		  D.  candela
 [Wrong Answer]
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Q25. In houses the illumination is in the range of
 A.  2-5 lumens/watt
 [Wrong Answer]		  B.  10-20 lumens/watt
 [Wrong Answer]
 C.  35-45 lumens/watt
 [Wrong Answer]		  D.  60-65 lumens/watt
 [Correct Answer]
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Q26. The cost of a fluorescent lamp is more than that of incandescent lamp because of which of the following factors ?
 A.  More labour is required in its manu­facturing
 [Wrong Answer]		  B.  Number of components used is more
 [Wrong Answer]
 C.  Quantity of glass used is more
 [Wrong Answer]		  D.  All of the above factors
 [Correct Answer]
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Q27. ____ cannot sustain much voltage fluc­tuations.
 A.  Sodium vapour lamp
 [Wrong Answer]		  B.  Mercury vapour lamp
 [Wrong Answer]
 C.   Incandescent lamp
 [Correct Answer]		  D.  Fluorescent lamp
 [Wrong Answer]
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Q28. For normal reading the illumination level required is around
 A.   20-40 lumens/m2
 [Wrong Answer]		  B.  60-100 lumens/m2
 [Correct Answer]
 C.   200-300 lumens/m2
 [Wrong Answer]		  D.  400-500 lumens/m2
 [Wrong Answer]
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Q29. Which gas can be filled in GLS lamps ?
 A.  Oxygen
 [Wrong Answer]		  B.  Carbon dioxide
 [Wrong Answer]
 C.  Xenon
 [Wrong Answer]		  D.  Any inert gas
 [Correct Answer]
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Q30. When an electric bulb is broken it produces bang, this is due to
 A.  vacuum inside the bulb
 [Correct Answer]		  B.  pressure of air in the bulb
 [Wrong Answer]
 C.  pressure inside is equal to that out­side
 [Wrong Answer]		  D.  none of the above
 [Wrong Answer]
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