Power Systems The value of inductance used for compensation of arcing grounds is ω²C/3 3/ω²C 1/3ω²C 3ω²C ω²C/3 3/ω²C 1/3ω²C 3ω²C ANSWER DOWNLOAD EXAMIANS APP
Power Systems A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu? 0.2 pu 2.4 pu 1.375 pu 3.975 pu 0.2 pu 2.4 pu 1.375 pu 3.975 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems In thermal power stations, economiser will reduce the thermal efficiency both 2 and 3 reduce the heat increase the thermal efficiency reduce the thermal efficiency both 2 and 3 reduce the heat increase the thermal efficiency ANSWER DOWNLOAD EXAMIANS APP
Power Systems Plug setting of a relay can be altered by varying none of these. air gap of magnetic path. adjustable back up stop. no. of ampere-turns. none of these. air gap of magnetic path. adjustable back up stop. no. of ampere-turns. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The flow duration curve at a given head of a hydroelectric plant is used to determine diversity factor for the plant. total units of energy available. load factory at the plant. total power available at the site. diversity factor for the plant. total units of energy available. load factory at the plant. total power available at the site. ANSWER DOWNLOAD EXAMIANS APP
Power Systems An over current relay, having a current setting of 125% connected to a supply circuit through a current transformer of ratio 400/5. The pick up value is 10 A 6.25 A 12.5 A 15 A 10 A 6.25 A 12.5 A 15 A ANSWER DOWNLOAD EXAMIANS APP
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