Power Systems The maximum efficiency of modern coal fired steam steam raising thermal power plants is restricted to about 0.35( a low value), mainly because of high energy loss in condenser low steam turbine mechanical efficiency low alternator efficiency high energy loss in boilers high energy loss in condenser low steam turbine mechanical efficiency low alternator efficiency high energy loss in boilers ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the desirable properties of a insulator material? Both 1 and 2 High relative permittivity Low ratio of puncture strength to flash over. High ratio of puncture strength to flash over. Both 1 and 2 High relative permittivity Low ratio of puncture strength to flash over. High ratio of puncture strength to flash over. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has self and mutual impedances of 0.8 pu and 0.2 pu. Find the positive, negative and zero sequence impedances respectively? 0.8, 0.8 and 1.2 pu 0.6, 0.8 and 1.2 pu 0.6, 0.6 and 1.2 pu 0.8, 0.6 and 1.2 pu 0.8, 0.8 and 1.2 pu 0.6, 0.8 and 1.2 pu 0.6, 0.6 and 1.2 pu 0.8, 0.6 and 1.2 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3 - Φ, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is 104.8 kA. 1200 A. 35 kA. 3600 A. 104.8 kA. 1200 A. 35 kA. 3600 A. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In thermal plant most of the energy is wasted in boiler ESP condenser turbines boiler ESP condenser turbines ANSWER DOWNLOAD EXAMIANS APP
Power Systems For variable heads of near about but less than 30 m, which type of turbines is used hydro power plant Kaplan. Pelton. None of above. Francis. Kaplan. Pelton. None of above. Francis. ANSWER DOWNLOAD EXAMIANS APP
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