Power Systems Where the voltage is high and current to be interrupted is low, Which of following the breaker is preferable? Vacuum CB. Any of these. Air blast CB. Oil CB. Vacuum CB. Any of these. Air blast CB. Oil CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The characteristic impedance of a transmission line is Directly proportional to its length. Directly proportional to square root of its length. Inversely proportional to square root of its length. Independent of its length. Directly proportional to its length. Directly proportional to square root of its length. Inversely proportional to square root of its length. Independent of its length. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A string insulator has 4 units. The voltage across bottom most unit is 10 kV and its efficiency is 90%. Find the total operating phase voltage? 32 kV 36 kV 45 kV 40 kV 32 kV 36 kV 45 kV 40 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Two generating stations delivering a powers of P1 = 150 MW, P2 =100 MW and the B coefficients are B11 = 0.005, B22 = 0.002, B12=B21= -0.001. Find the transmission line losses? 95.5 85.5 102.5 105.2 95.5 85.5 102.5 105.2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Example of base load stations are hydro. thermal. gas turbine. both A and B. hydro. thermal. gas turbine. both A and B. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Critical visual voltage is the voltage at which corona is just initiated both 1 and 2 None of these corona is visible with blue or violet colour corona is just initiated both 1 and 2 None of these corona is visible with blue or violet colour ANSWER DOWNLOAD EXAMIANS APP
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