Power Systems A string type insulator has three units with self capacitance C and ground capacitance of 0.2 C having a string efficiency of 82% 80% 78% 76% 82% 80% 78% 76% ANSWER DOWNLOAD EXAMIANS APP
Power Systems For large plants of capacity for more than 15 MW, what type of cooling is used Air. Water. Liquid. Hydrogen. Air. Water. Liquid. Hydrogen. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The sequence components of the fault current are as follows : Ipositive = j1.5 pu, Inegative = − j0.5 pu, Izero = − j pu Which fault is this? LG. LL. LLG. LLLG. LG. LL. LLG. LLLG. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The charging reactance of 50 km transmission line is 1500 Ω. What is the charging reactance for 100 km length of line? 750 Ω 1000 Ω 3000 Ω 1500 Ω 750 Ω 1000 Ω 3000 Ω 1500 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems For transmission line which one of the following relation is true? AD - BC = 1 AD + BC = 0 AD - BC = 0 AD - BC = -1 AD - BC = 1 AD + BC = 0 AD - BC = 0 AD - BC = -1 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The pu parameters for a 500 MVA machine on its own base are: Inertia, H = 20 pu; reactance X = 2 pu. The pu values of inertia and reactance on 100 MVA common base, respectively, are 100, 0.4 4, 0.4 100, 10 4, 10 100, 0.4 4, 0.4 100, 10 4, 10 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS