Pls say , how we calculate lux / sq.ft, which formula used
for calculation
Answers were Sorted based on User's Feedback
Answer / 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 |
Answer / 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 |
Lux = Lumens/sq.ft.
for one are the formula will be -
Area in sq. mtrs X Required Lux
No. of fixtures = -------------------------------
Lumens O/p of fixture X U.F X D.F
Uday Kulkarni
Is This Answer Correct ? | 13 Yes | 5 No |
Answer / chandrakant zingade
Per Sq.ft Lux = 1 x Total Lux / Total area in Sq.ft.
Is This Answer Correct ? | 5 Yes | 5 No |
Is itnecessary to use capacitor in an Fluorescent Tube Light Fixtures? Why? What if not capacitors are not included?
why sec of ct should be kept shorted
Write a note on RC operational amplifier as integrator
what do u mean by starting torque? how it should be for a good motor? what is the relation between starting torque and power factor? What is the relation between efficiency and starting torque?
Why is the uniform distribution of the capacitor discs in a suspension type insulators essential , what can u do to improve the string efficiency ?
why 3 phase induction motor only need starter ? why not other motors need starter ?(like synchronous motor,single phase induction motors & their types) ?
Sir Power transformer :- (in generating station) Alternator terminals side - Delta HT transmission line side - Star Why?
anyone knows service engineer in chennai for EDM SPARKING MACHINE.CHMER PULSE CD 60 M.pL GIVE ANY CONTACT NOS
why we are using2 wave trap in a feeder?
Why machine give shock
Why don't we use ground free electricity to avoid electric shock.As birds are do not get shock.
i have faced a problem in ro plant grunfos make bm30type pump it is 22kw pump. We start this pump using siemens 3rw 4423-ibc44, 30kw softstarter but this soft starter will frequently failier so we planed to change dol starter. So pls tell anybudy its possible or not.