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 32 MΩ 8 MΩ 16 MΩ 4 MΩ 32 MΩ 8 MΩ ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following contributes to the Rankine cycle efficiency improvement in a thermal power plant Use of steam for heating of boiler feed water. All of these Reheat of steam an intermediate stages. Use of high pressure. Use of steam for heating of boiler feed water. All of these Reheat of steam an intermediate stages. Use of high pressure. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The neutral of 10 MVA, 11 kV alternator is earthed through a resistance of 5 ohms. The fault ready is set to operate at 0.75 A. The current transformers have a ratio of 1000/5. What is the percentage of the alternator winding is protected? 88.2% 11.8% 15% 85% 88.2% 11.8% 15% 85% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Skin effect depends on frequency relative permeability conductivity All of these frequency relative permeability conductivity All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems A power station supplies the peak load of 50 MW, 40 MW and 70 MW to three localities. The annual load factor is 0.50 p.u. and the diversity factor of the load at the station is 1.55 the maximum demand on the station and average load respectively will be 53 MW. 51.61 MW. 57.5 MW. 52 MW. 53 MW. 51.61 MW. 57.5 MW. 52 MW. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The only place where slip ring induction motors used in thermal power plants is none of above. coal handling plant. lubrication oil pumps. conveyors. none of above. coal handling plant. lubrication oil pumps. conveyors. ANSWER DOWNLOAD EXAMIANS APP
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