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What are the minimum acceptable insulation resistances of insulation of underground cable suitable for 0.440kV,11kV, 33kV and 66kV?
2 6427Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?
NTPC,
1968how to calculate overall efficiency of diesel generator set? give us a formula with an example.
2 9303To prove the capacity of a 10MVA transforemr with 6.5% impedance by a short circuit test how much power is needed to inject an impedance voltage if we have to arrive for its rated current?
1870why ct's&pt'S out put called as burden,why compelsary short ckt the secondary of ct's while removing the burden?
2189what is the power factor used by the PHCN in nigeria? 2. what is the difference between an alternator and generator. 3. Generation of poweris in KV but how is transmission is in MW. 4.If the transmission of power is 20,000MW how can it be increaesed to 80,000MW
8572What happens to an electric motor if it has poor or no ventilation. Will it burn out? If it will, how long it will run before it burn out?
GMC,
5 7922Post New Electrical Engineering Questions
what is negative and zero impedance in 3 phase induction motor ??
Discuss about gear cutting machines.
How to measure power in 2 or 4 or n phase circuit? Please give me a formula.
1. What is the exact formula for one weber? for example,(one ampere = one coulomb electron of electrons crossing a point of conductor at one second. i.e, 1A=1Q/1sec)
why is a power transformer used only occasionally?it is used to step up at generating stations?and that needs to be done all day long !!!!!!!
Cables Construction hi friends, 0.6/1/1.2 kV LV , DC and Control cables are concentric copper conductor what does its means and what is the use of concentric copper conductor,and are this with copper tape shield or copper screening, ? thanks
what are the values of VRY,VYB,VBR,Vry,Vyb,Vbr,Vrn,Vyn,Vbn for Magenetic balance test of 100 KVA and 63 KVA Distribution transformer
What is difference between SMC supportg and Glass Fibre Reinforced Plastic Support.
how to select automotive wire by mathematical equation with given current, vlotage and resistance
Name a govt approved university which have 100% online engineering course.
how to calculate cooling requirement of datacentre from electrical load?
how can we calculate the ratio of caustic soda and water in lrs.
What is the accepted limit to increase the choosen transformer capacity over the load and why ?
what is proper capacitor placement? How to evaluate capacitor size?
Witch do depand of Power factor and theory of power factor?
