Power Systems Alternate formation and breakage of bubbles are called All of these water hamming. cavitations. surgfication. All of these water hamming. cavitations. surgfication. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The load current in short circuit calculations are neglected because nether 1 nor 2 both 1 and 2 short circuit currents are greatly out of phase with load currents short circuit currents are much larger than load currents nether 1 nor 2 both 1 and 2 short circuit currents are greatly out of phase with load currents short circuit currents are much larger than load currents ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 100 MVA alternator operating at full load at 50 Hz. H = 4 MWsec/MVA, Td = 0.5 sec. One of the transmission line is tripped. So that output of generator is reduced to 70 MW. Find the frequency deviation during this time? -0.92 0.92 -0.56 0.56 -0.92 0.92 -0.56 0.56 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 10 MVA generator has reactance of 0.2 pu. Find the new reactance value for 50 MVA base? 0.2 pu 0.25 pu 1 pu 5 pu 0.2 pu 0.25 pu 1 pu 5 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Where is the draft tube of a hydroelectric plant that is an airtight pipe located Near the surge tank. At the beginning of the penstock. In between the penstock and runner. In between the runner exhaust and the tail race. Near the surge tank. At the beginning of the penstock. In between the penstock and runner. In between the runner exhaust and the tail race. ANSWER DOWNLOAD EXAMIANS APP
Power Systems One million cubic meters of water is stored in a reservoir feeding a water turbine. The density of water is 993 kg/m³. If the centre of mass of water is 50 meters above the turbine and losses are negligible, the energy produced by that volume of water is 140 MWhr 130.2 MWhr 120 MWhr 135.3 MWhr 140 MWhr 130.2 MWhr 120 MWhr 135.3 MWhr ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS