How one can say about a device (e.g: a light holder
contains 20 or 30 L.E.Ds which glows when power supply is
off, from which source they are getting the supply.....
battery or capacitor) without removing and opening up its
case ?
capacitor only for short time operation.if u want to glow long term battery is preferable.
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how to convert psi into kilo pascal? what is the suction pressure & discharge pressure of chiller?
RESISTONS R1 AND R2 in parallel = Total R.? 1-R=R1+R2 2-R=1/R1 + 1/R2 3-1/R + R1+R2 R=R1R2/R1+R2 select one
2 Answers BSNL, PGVCL Paschim Gujarat Vij Company Limited, TCS, Wartsila,
Which transformer is suitable for 220/11 kV, 60 MVA, distribution , Y-Y or D-Y or Y-D, give comparison for the same.
WHAT SHOULD BE THE MINIMUM IR VALUE FOR LV (380V) CABLES ACCORDING TO IEC/IEEE.
We have 2 no. 4MW DG set. and GEB supply. But, we running, only 1 DG set. when we done APFC/Power factor setting : 0.90, then winding temp. Low. but when setting done : 0.83, then Winding temp. increase. WHY Why ? ? ?, plz give me answer.
How can get elongation of 2 k.G aluminium, if elongated aluminium dia is 2.5 mm?
How does a diesel generator works?
If we are given a 10 amp cable type and asked to calculate the number of cores used and the thickness of the cable, how do we do it?? please help...urgent!! i hope the question is clear enough!!
how to carry out Magnetizing Current Test on Distribution transformer and what purpose we are doing this test.
can anyone help me regarding bout Electrical designs and calculations .. which text book should i follow as i am a trainee engineer.Description of my work which is Electrical designs like cable sizing, lighting, lightning, Gensets sizing, motor sizing, transformer sizing, generator sizing, circuit breakers, PDB MCC PCC SLDB MLDB panels, Single line diagrams mainly, substation desings, cable routing and layouts, reactive power compensations, power factor improvement, voltage drop calculations, power generations, power transmission, power distributions all calculations.Please help me
1.What is wind span ,wight span and normal span, and what is the difference for 132kv transmission .
What will happen when we will connect lamp in between phase and earth.