Power Systems Lightning arresters are used to protect electrical equipment against power frequency of over voltages. over voltages due to indirect lightning stroke. direct strokes of lightning. over currents due to lightning stroke. power frequency of over voltages. over voltages due to indirect lightning stroke. direct strokes of lightning. over currents due to lightning stroke. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Efficiency of thermal power plant can be taken as turbine efficiency. generator efficiency. product of efficiencies of all stages. efficiency of thermal cycle. turbine efficiency. generator efficiency. product of efficiencies of all stages. efficiency of thermal cycle. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Mho relay is used for the protection of medium length lines. short length lines. no length criterion. long transmission lines. medium length lines. short length lines. no length criterion. long transmission lines. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Condition for maximum voltage regulation tanφ = X/R cosφ = R/X cosφ = X/R tanφ = R/X tanφ = X/R cosφ = R/X cosφ = X/R tanφ = R/X ANSWER DOWNLOAD EXAMIANS APP
Power Systems Pump storage schemes are used to improve the load factor. the plant capacity factor as well as the load factor of the power system. the power factor. the diversity factor. the load factor. the plant capacity factor as well as the load factor of the power system. the power factor. the diversity factor. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Gross head of an hydroelectric power station is the height of water level in the river where the tail race is provided. all of above. the height of water level in the river where the storage is provided. 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. all of above. the height of water level in the river where the storage is provided. the difference of water level between the level in storage and tail race. ANSWER DOWNLOAD EXAMIANS APP
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