Power Systems The insulation resistance of the 20 km long underground cable is 8 MΩ. Other things being same, the insulation resistance of 10 km long cable will be 16 MΩ 4 MΩ 8 MΩ 32 MΩ 16 MΩ 4 MΩ 8 MΩ 32 MΩ ANSWER DOWNLOAD EXAMIANS APP
Power Systems An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z0 = j 0.15 pu, Z1 = Z2 = j 0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for single line to ground fault is 4.28 pu 7.25 pu 3.75 pu 2.5 pu 4.28 pu 7.25 pu 3.75 pu 2.5 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems In coal fired thermal power stations, what are the electrostatic precipitators used for? To keep the air heaters clean All of these To collect the dust particles from the flue gases To remove dust particles setting on the bus bar conductors in the station switch yard To keep the air heaters clean All of these 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
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? 100 kV 18.18 kV 36. 36 kV 30.6 Kv 100 kV 18.18 kV 36. 36 kV 30.6 Kv ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following method is/are more reliable? Gauss-Siedel (GS) method Newton Raphson (NR) method Fast Decoupled Load Flow (FDLF) method All of these Gauss-Siedel (GS) method Newton Raphson (NR) method Fast Decoupled Load Flow (FDLF) method All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Ships are usually supplied power by Diesel engine. Hydraulic turbine. None of above. Steam accumulator. Diesel engine. Hydraulic turbine. None of above. Steam accumulator. ANSWER DOWNLOAD EXAMIANS APP
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