Power Systems The voltage and current instantaneous values are given as 5 sin (ωt + 30°) pu and 2 sin (ωt - 15°) pu respectively. Find the per unit active power? 5 pu 5.353 pu 3.535 pu 7 pu 5 pu 5.353 pu 3.535 pu 7 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A string insulator has 4 units. The voltage across the bottom most unit is 33.33% of total voltage. Its string efficiency is 25% 33.33% 66.66% 75% 25% 33.33% 66.66% 75% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Cheapest plant in operation and maintenance is hydroelectric. nuclear. diesel power. steam power. hydroelectric. nuclear. diesel power. steam power. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Gross head of an hydroelectric power station is 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. the height of water level in the river where the tail race is provided. ANSWER DOWNLOAD EXAMIANS APP
Power Systems For flat voltage profile system, voltage regulation is 50% 0% 100% any of the above 50% 0% 100% any of the above ANSWER DOWNLOAD EXAMIANS APP
Power Systems The area under a flow duration curve represents total of units of energy available. total quantity of run-off during that period. maximum rate of run-off during the period. total power available. total of units of energy available. total quantity of run-off during that period. maximum rate of run-off during the period. total power available. ANSWER DOWNLOAD EXAMIANS APP
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