I have 480V Single phase and I am trying to figure how big of a transformer (KVA's) and Primary breaker size I need to provide 200 Amps at 240V for a building.714
what will happen when power factor is leading in distribution of power?10 14587
In CDG type IDMTL realy O/L , E/F, O/C which are used for out going feedrs,on R-phase o/c element, Y-phase , e/f elecment and on b -phase o/c element will be connected . Why the earth fault on center phase only, why not on other two phases?2 6670
which fault is severe and why?between lll fault and lllg fault which fault is severe and y?
suppose generator rating is 50 kw,load is 25 kw,hw much d generator ll generate?what about d remainin power?
What is the significance of vector grouping in Power Transformers??3 3938
how we do Vector group ,magnetic balance and tap changer test in Transformer?1178
which type of motor is suitable for water suction pump ?4 3005
for 5KW resistive load can anyone please suggest me whether to go for UPS/Inverter or Generator depending upon cost calulations776
Define motor & pump?3 7767
I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?592
why we not connect the 12 V batteries in parallel to get the more backup supply for an UPS ? wheter off line or on line UPS ?2 2280
in science exhibition how lamp can blink when you clap near the lamp ? thank you
What is the main cause of magnetism?
what is the use of surge suppresser in 33 KV incoming panel. where it must be installed,inseries with incoming cable surge suppresser must be at incoming of the breaker are outgoing of the breaker
sir i applied for hpcl(electrical).i want to know from which subjects most of the technical que will b asked.and pattern of the written test.pls help me
Advantages of using generator circuit breaker (GCB) scheme in a power station ?
AL=0B9H,bl=75H, ADD AL,BL AL=____________? CF________? OF___________?
What is the physical significant of power factor?
how to produsing geretor power
Hi Friend I am used multimeter to measure the voltage between R Phase(SS1) to R Phase(SS2). In SS1 is connected with UPS loads. But I am getting voltage between these 2 R Phases. Please give some idea friend
sir, i am 3 years diploma course pass out candidate.what type of certificate can i got in marine service.
How to maintain ac plant?
What is the RME and explain the full form and what is the RME work?
what is the prinsiple of dc motor and construction and working ,application of dc motor.
What is the meaning of 40X8X2 busbar dimensions for carring load of 400 Amps
How can you calculate the size of the down conductor cable for the lightning protection system. Is 70mm2 cable can replace 95mm 2 bare copper cable when the copper tape size is 25Wx3 thk mm.