Power Systems A 3-phase, 110 kV coaxial XLPE insulated power cable delivering power at 50 Hz, has a capacitance of 125 nF/km. If the dielectric loss tangent of XLPE is 2*10^-4, then dielcetric power loss in this cable in W/km/phase is 31.7 35.45 23.9 38.6 31.7 35.45 23.9 38.6 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A hydraulic turbine having rated speed of 250 rpm is connected to a synchronous generator. In order to produce power at 50 Hz, the numbers of pole are required in the generator 12. 6. 16. 24. 12. 6. 16. 24. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 400 KV network, 360 KV is recorded at a 400 KV bus. The reactive power absorbed by shunt rated for 50 MVAr, 400 KV connected at the bus is 61.73 MVAr. 45 MVAr. 40.5 MVAr. 55.56 MVAr. 61.73 MVAr. 45 MVAr. 40.5 MVAr. 55.56 MVAr. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the advantages of synchronous phase modifier over the shunt compensation? initial cost is low smooth voltage regulation is possible by controlling excitation single unit can be used as both capacitance and inductor by adjusting the excitation both 1 and 2 initial cost is low smooth voltage regulation is possible by controlling excitation single unit can be used as both capacitance and inductor by adjusting the excitation both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Breaking current is a ------------------ value? RMS average maximum any of the above RMS average maximum any of the above ANSWER DOWNLOAD EXAMIANS APP
Power Systems In coal fired thermal power stations, what are the electrostatic precipitators used for? All of these To keep the air heaters clean To collect the dust particles from the flue gases To remove dust particles setting on the bus bar conductors in the station switch yard All of these To keep the air heaters clean To collect the dust particles from the flue gases To remove dust particles setting on the bus bar conductors in the station switch yard ANSWER DOWNLOAD EXAMIANS APP
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