Power Systems In relay coil which is used? Current transformer. Power transformer. Instrument transformer. Potential transformer. Current transformer. Power transformer. Instrument transformer. Potential transformer. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Positive, negative and zero sequence impedances of line are 2,2 and 5 pu respectively. Find self and mutual impedances respectively? 1 and 3 pu 2 and 5 pu 2 and 2 pu 3 and 1 pu 1 and 3 pu 2 and 5 pu 2 and 2 pu 3 and 1 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems What are the methods of laying underground cables? None of these. Both A and B. Draw - in - system / duct - pipe laying. Direct laying. None of these. Both A and B. Draw - in - system / duct - pipe laying. Direct laying. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Reactance relays are used for the protection of short transmission lines only All of these medium transmission lines only long transmission lines only short transmission lines only All of these medium transmission lines only long transmission lines only ANSWER DOWNLOAD EXAMIANS APP
Power Systems The commercial sources of energy are fossile fuels and radioactive substances. none of above. wood, animal wastes and agricultural wastes. solar, wind, biomass. fossile fuels and radioactive substances. none of above. wood, animal wastes and agricultural wastes. solar, wind, biomass. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The equation of area control error(ACE) is ACE = ΔPtie +1/ b.Δf ACE = ΔPtie - 1/b.Δf ACE = ΔPtie + b.Δf ACE = ΔPtie - b.Δf ACE = ΔPtie +1/ b.Δf ACE = ΔPtie - 1/b.Δf ACE = ΔPtie + b.Δf ACE = ΔPtie - b.Δf ANSWER DOWNLOAD EXAMIANS APP
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