Power Systems When is the ferranti effect on long overhead lines experienced? The line is heavily loaded The power factor is unity The line is fully loaded The line is lightly loaded The line is heavily loaded The power factor is unity The line is fully loaded The line is lightly loaded ANSWER DOWNLOAD EXAMIANS APP
Power Systems Four identical alternators each are rated for 20 MVA, 11 KV having a subtransient reactance of 16% are working in parallel. The short circuit level at the busbar is 125 MVA 500 MVA 100 MVA 400 MVA 125 MVA 500 MVA 100 MVA 400 MVA 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? 1000 Ω 750 Ω 3000 Ω 1500 Ω 1000 Ω 750 Ω 3000 Ω 1500 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Advantage/s of per unit system as compare to absolute system? only one equation is required All of these memory required is less calculation time is less only one equation is required All of these memory required is less calculation time is less ANSWER DOWNLOAD EXAMIANS APP
Power Systems For a 500 Hz frequency excitation, a 100 km long power line will be modelled as shunt capacitor medium transmission line any of the above long transmission line shunt capacitor medium transmission line any of the above long transmission line ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has impedance of (0.005 + j0.05) pu. Find the line at which maximum value of negative DC off set current is produced, if it is applied with Vm cosωt? 9.68 1.47 msec 4.68 msec 2.63 msec 9.68 1.47 msec 4.68 msec 2.63 msec ANSWER DOWNLOAD EXAMIANS APP
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