Pls say , how we calculate lux / sq.ft, which formula used
for calculation
- 5 Answers
- 16881 Views
- I also Faced
- E-Mail Answers
Answer Posted / aarya
To Calculate the no. of fittings in a room,
the formula is
N=No. of Light fittings required= A x E/(Lxuxd.f)
.'. E= N x (Lxuxd.f)/A
where L=> Lumen o/p
A=> Area (m^2)
E=> Illumination or Lux levels (in lux)
u=> coefficient of utilization
d.f=> Depreciation Factor
For Detail study refer Philips,G.E(lighting)& Artlite
Catalogues.
| Is This Answer Correct ? | 18 Yes | 5 No |
Post New Answer View All Answers
What are the types of feedback oscillators?
what is meant by 3rd hormonics ?
What is the difference between grid and off- grid system??
How is the percentage impedence of a transformer fixed at design stage???
why the making current is more than then the breaking current and if its true then its about a controling circuit or breaker power contact points
The metal-enclosed switchgear and controlgear is subdivided into three types: 1. metal-clad switchgear and controlgear; 2. compartmented switchgear and controlgear 3. cubicle switchgear and controlgear. What is the main differnence between them. State some example.
Give two basic speed control scheme of dc shunt motor?
how electrical earthing maintenance done in industry?
what happens in the short circuited secondary transformer,if the resistance of the short circuit is increased gradually?
what is mean by Digital Logic Meter (DLM)
Write a note on Treatment for electric shock.
WHAT IS ELECTRICAL MAINTAINTENCE ?
How to use computer cpu ups use for home inverter circuit board
What are the disadvantages of hydropower?
Can double compression glands be used with regular cables?
