Power Systems The inductance of single phase two wire line is given by 0.4×10-7× ln(d/r') H/m 0.4×10-7× ln(r'/d) H/m 4×10-7× ln(d/r') H/m 4×10-7× ln(r'/d) H/m 0.4×10-7× ln(d/r') H/m 0.4×10-7× ln(r'/d) H/m 4×10-7× ln(d/r') H/m 4×10-7× ln(r'/d) H/m ANSWER DOWNLOAD EXAMIANS APP
Power Systems If skin depth is more, then skin effect is None of these more less either 1 or 2 None of these more less either 1 or 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the inertia constant H = 10 MJ/MVA for a 50 MVA generator, the stored energy is 50 MJ 500 MJ 10 MJ 5 MJ 50 MJ 500 MJ 10 MJ 5 MJ 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, 10 4, 0.4 100, 10 100, 0.4 4, 10 4, 0.4 100, 10 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Where air circuit breakers are used? Up to 11 kV. Up to 66 kV. Up to 33 kV. Up to 12 kV. Up to 11 kV. Up to 66 kV. Up to 33 kV. Up to 12 kV. 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. LLLG. LLG. LL. LG. LLLG. LLG. LL. ANSWER DOWNLOAD EXAMIANS APP
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