Power Systems Condition for zero voltage regulation is tanφ = R/X cosφ = R/X cosφ = X/R tanφ = X/R tanφ = R/X cosφ = R/X cosφ = X/R tanφ = X/R ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%. 83.76 kV 52.84 kV 48.36 kV 20 kV 83.76 kV 52.84 kV 48.36 kV 20 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Advantages of per unit system is/are All of these It has units for all quantities No units for any quantity Need of transformation ratio All of these It has units for all quantities No units for any quantity Need of transformation ratio ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following buses is/are not PV buses? fixed shunt capacitor buses reactive power support buses voltage control buses both 1 and 2 fixed shunt capacitor buses reactive power support buses voltage control buses both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Where is the draft tube of a hydroelectric plant that is an airtight pipe located At the beginning of the penstock. Near the surge tank. In between the runner exhaust and the tail race. In between the penstock and runner. At the beginning of the penstock. Near the surge tank. In between the runner exhaust and the tail race. In between the penstock and runner. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the transmitted voltage? 36. 36 kV 100 kV 18.18 kV 30.6 Kv 36. 36 kV 100 kV 18.18 kV 30.6 Kv ANSWER DOWNLOAD EXAMIANS APP
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