Environmental Sciences, asked by ravalikommineni1999, 1 month ago

A hall 12m x 8m x 4m is to have direct lighting
illumination of 80 lux on the working plane 70 cm above the
floor. U.F is 0.5 and M.F is 0.8. Find no. of fluorescent tube
lamps required and their rating. Lamp efficiency may be taken
as 40 lm/W. Assume suitable SHR and draw the layout.

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Answered by ranjeetcarpet

Answer:

CERAMICS – one of the oldest materials created by man – is made exclusively from naturally occurring raw materials: kaolin, clay, feldspar and quartz sand. ... Since time immemorial these naturally occurring raw materials have formed the basic compound for the extremely durable material, ceramic.

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A hall 12m x 8m x 4m is to have direct lightingillumination of 80 lux on the working plane 70 cm above thefloor. U.F is 0.5 and M.F is 0.8. Find no. of fluorescent tubelamps required and their rating. Lamp efficiency may be takenas 40 lm/W. Assume suitable SHR and draw the layout.​

Answers

A hall 12m x 8m x 4m is to have direct lighting
illumination of 80 lux on the working plane 70 cm above the
floor. U.F is 0.5 and M.F is 0.8. Find no. of fluorescent tube
lamps required and their rating. Lamp efficiency may be taken
as 40 lm/W. Assume suitable SHR and draw the layout.