Power Systems Maximum efficiency of modern coal fired steam raising thermal power plants is restricted to about 035 (a low value), mainly because of low steam turbine mechanical efficiency. high energy loss in boiler. low alternative efficiency. high energy loss from turbine exhaust to condenser. low steam turbine mechanical efficiency. high energy loss in boiler. low alternative efficiency. high energy loss from turbine exhaust to condenser. 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? -0.56 0.56 -0.92 0.92 -0.56 0.56 -0.92 0.92 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Where air circuit breakers are used? Up to 66 kV. Up to 33 kV. Up to 11 kV. Up to 12 kV. Up to 66 kV. Up to 33 kV. Up to 11 kV. Up to 12 kV. ANSWER DOWNLOAD EXAMIANS APP
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 Find the relation between sub transient (X"), transient (X') and synchronous reactance (X) ? X" < X' > X X" > X' < X X" < X' < X X" > X' >X X" < X' > X X" > X' < X X" < X' < X X" > X' >X ANSWER DOWNLOAD EXAMIANS APP
Power Systems A synchronous generator is of 100 MVA have inertia constant of 20 MJ/MVA. Find the angular momentum in MJsec/electrical degrees 2000 0.22 0.4 5 2000 0.22 0.4 5 ANSWER DOWNLOAD EXAMIANS APP
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