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
- 18445 Views
- I also Faced
- E-Mail Answers
Answer Posted / krishna pathak
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 ? | 24 Yes | 9 No |
Post New Answer View All Answers
can we make a electric generator,which can not use any type of fuel,air,solar,gas,thermal,coal,petrol,etc and able to produce electrical energy (or self electricity generating generator)
In power transmission using open belts or horizontal shafts it is preferable to have the slack side of the belt on the top because
how dia of wire and angles are calculated for overhead shielding wire to protect substation equipment from lightening strokes???
what will be the min and max voltage flow from neutral to earth?
Would you recommend to replace all oil filled cables with xlpe cable for hv transmission with the current technolgy for xlpe cable?
Apparent power is expressed as V * I(Conjugate). Why not in V * I ?
All the socket in a room become very hot, the Wall was also became very hot and the earth conductor also became live, what in your view might be the possible causes?
i am going to give the JSEB,RANCHI exam for power plant,so i need some samples of papers related to that,so please send me these papers by my mail id.
1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.
what is solkor relay and which condition it will act?
what is high and low cut off voltage of BB and DG at SPS????????
What does the letter CTNM in negative phase sequence relay means?
what is the standard duration after failure EB power
How to select cable the size, what is the parameters use and what is the formulas use for this cable size calculation?
sir i completed apprentice in TNEB.apprentice is eligible for 'c' licence
