Power Systems For large plants of capacity for more than 15 MW, what type of cooling is used Air. Water. Liquid. Hydrogen. Air. Water. Liquid. Hydrogen. ANSWER DOWNLOAD EXAMIANS APP
Power Systems For 800 MJ stored energy in the rotor at synchronous speed, what is the inertia constant H for a 50 Hz, four pole turbo generator rated 100 MVA, 11 kV? 2 MJ/MVA 8 MJ/MVA 4 MJ/MVA 6 MJ/MVA 2 MJ/MVA 8 MJ/MVA 4 MJ/MVA 6 MJ/MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems The ratio of reset to pick up current for an induction cup relay is approximately 0.99. 1.0. 1.35. 0.75. 0.99. 1.0. 1.35. 0.75. ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the function of economiser in steam boilers All of these cooling improving thermal efficiency collect ash particals All of these cooling improving thermal efficiency collect ash particals 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 0.92 0.56 -0.92 -0.56 0.92 0.56 -0.92 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? 1 pu 0.25 pu 0.2 pu 5 pu 1 pu 0.25 pu 0.2 pu 5 pu ANSWER DOWNLOAD EXAMIANS APP
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