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Illumination & Wiring
MCQ – Illumination & Wiring
#1. Unit of luminous intensity....?
#2. The most efficient lamp....?
sodium vapour lamp
#3. Switch board is fixed at height of ..... as per IE rules?
#4. How many light points are allowed in one circuit?
#5. Batten wiring is recommended for which of the following wiring?
#6. Earthing is done for providing a path to ground:
#7. Which type of electric lamp is used in cinema projectors?
carbon arc lamp
#8. High pressure mercury vapour lamp emits ....?
white colour light
red colour light
bluish white colour light
yellow colour light
#9. The approximate run time of a battery lamp containing 10x0.25 W LED, running on a 6 V -6AH is...?
#10. Which of the following is a suitable copper wire for carrying a current of 50A?
#11. The colour of light depends on...?
speed of light
speed & frequency of light
#12. In CTS wiring, CTS stands for....?
core type sheathed
cable type sheathed
core tyre sheathed
cable tyre sheathed
#13. Insulating material of a cable should have....?
low melting point
low mechanical strength
high dielectric strength
low dielectric strength
#14. The strongest half lap joint is....?
corner half lap joint
dovetail half lap joint
crosshalf lap joint
T half lap joint
#15. The type of earthing suitable for sandy areas is....?
#16. The inner tube of high pressure MV lamp is....?
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