Interested to Buy Any Domain ? << Click Here >> for more details...
Pls say , how we calculate lux / sq.ft, which formula used
for calculation
- 5 Answers
- 18606 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
we have two generators different capacity on 15 MW and other 6MW at 11 KV , 15 MW gen. bus short level current 40KA,and 6MW short level current 25KA,, length of cable 100MTR between 6 MW from 15MW gen. for bus coupling . kindly tell any one can we use both NGR OR one NGR from any GEN. BOTH NGR has diff. rating. Tariq pakistan
State thevenin’s theorem?
What is stepper motor?
What is dynamo?How it works and what is the function of dynamo in a DG.
how to select automotive wire by mathematical equation with given current, vlotage and resistance
what is draiv work
main difference between ac and dc?
what is apparent poewr, reactive power, & active power?
The SFC of an engine is 0.25 kg/kW hr. when the fuel used has a calorific value of 36000 kJ/kg. the thermal efficiency of the engine is
What is the most essential condition for the voltage build up for a d.c. Shunt generator?
Why earthing is necessary for any equipment?
In hydel power plants, L.A's, S.C's are placed inside the control panel boards. what is the purpose? [already the total body was earthed to ground.]
If I have Energy Meter Ratio as 100:5 & Also I have CT Ratio as 50:5 then what will be my multiplying Factor(M.F.)
PLZ EXPLAIN CORONA,SKIN,BIRD PALE,SPAN,SAG Effects of power cable.
how do i commission a distribution transformer knowing all its ratings and transformation ratios?d
