how to calculate regulation constants for over head lines? and what are the regulation constant for raccoon conductor at different voltage level and different P.F?
1444Whether should be the oil level in OCTC transfomer? It should be upto winding immersed completely or should be upto tap changer s/w? How it will affect the performance of the transformer. Rating may be 33KVA
1400iam completed my DEEE in eillm university. can i get the c licence in tamilnadu its possible or not
1 2868why motor range is available 22kv,30kv,37kv,45kv and so on? why motor range is not available 21kv,24,25,26,27kv and so on?
2354What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection
ABB,
3078What is genrally the % Impedance of a Dg set? How can we calculate Earthing conductor size for a DG set?
3416What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer
ABB,
1892What is the basis for selecting Vk/2 or Vk/4 for REF and Differential protection of Transformer and What is the significance of magnetising current
1907Post New Electrical Engineering Questions
What is the formula to calculate distribution transformer De-rating on iron losses basis
How would you relate your key competencies to this position?
Write the current equation in series RLC circuits.
What is the formula to find out two phase active & reactive power
For some transformers we are using solid neutral earthing while some others we are using resistance earthing why ?
what is meaning of sympathetic tripping with respect to relays and give the values for current carrying capacities for copper and aluminium cables from 16sq mm to 500sq mm
How much pf maintan in dg set in 6o% load,when Dg runnig Neutaal Earthing removed what happen.
How can we connect additional batteries to three phase ups? What are parameters we have to check when connecting?
how much allowable resistance that can be difference in motor all coils?
why impedance relay is used for medium transmission line protection
Define delay time.
what are the major & minor faults that occur in an inverter and in UPS ? And how to repair and resolve them ?
I WANT BHEL PREVIOUS QUESTION
(In MEP services) HVAC in AC Plant room what else can we provide if the chiller is not considered?
When we have earthing mesh or underground earthing network in industrial plants, weather we have NT-S or NT-C-S kind of earthing system, so eventually weather we must use 4 or 5 wire in 400 volt level (For example 3×150+70 mm2 or 5×150 mm2) in this connection I would like to know exactly the paragraph of IEC or IEEE number
