Power Systems Which type of connection is employed for current transformers for the protection of star- delta connected 3-phase transformer? star-star delta-delta delta-star star-delta star-star delta-delta delta-star star-delta ANSWER DOWNLOAD EXAMIANS APP
Power Systems Taking the density of water to be 1000 kg/m³, how much power would be developed by a hydro electric generator unit, assume 100% efficiency, with 1 m head and 1 m³/s discharge? 9.81 kW 4.45 kW 2.90 kW 19.60 kW 9.81 kW 4.45 kW 2.90 kW 19.60 kW ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 1- phase transmission line operating at 30 kV has radius of 1 cm and distance between conductors is 0.5 m. Assume m = δ =1, g = 21 kV/cm and frequency f = 50 Hz. Find the critical disruptive voltage? 41.075 kV/phase 82.15 kV/phase 17.32 kV/phase 34.64 kV/phase 41.075 kV/phase 82.15 kV/phase 17.32 kV/phase 34.64 kV/phase ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a biased differential relay the bias is defined as the ratio of fault current and operating coil current. fault current and restraining coil current. number of turns of restraining and operating coil. operating coil current and restraining coil current. fault current and operating coil current. fault current and restraining coil current. number of turns of restraining and operating coil. operating coil current and restraining coil current. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Pelton wheel turbine is a none of above. medium head turbine. low head turbine. high head turbine. none of above. medium head turbine. low head turbine. high head turbine. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Gross head of an hydroelectric power station is the height of water level in the river where the storage is provided. all of above. the difference of water level between the level in storage and tail race. the height of water level in the river where the tail race is provided. the height of water level in the river where the storage is provided. all of above. the difference of water level between the level in storage and tail race. the height of water level in the river where the tail race is provided. ANSWER DOWNLOAD EXAMIANS APP
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