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 low alternator efficiency high energy loss in condenser high energy loss in boilers low steam turbine mechanical efficiency low alternator efficiency high energy loss in condenser high energy loss in boilers low steam turbine mechanical efficiency ANSWER DOWNLOAD EXAMIANS APP
Power Systems The surge impedance of a 400 km long overhead transmission line is 420 Ω. For a 200 km length of the same line, the surge impedance will be 400 Ω 210 Ω 420 Ω 840 Ω 400 Ω 210 Ω 420 Ω 840 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems The method of neutral grounding affects the positive sequence network zero sequence network negative sequence network All of these positive sequence network zero sequence network negative sequence network All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems The factor affecting run off are the topography and nature of soil in the catchment area. all of above. rain fall pattern, shape and size of catchment area. amount of vegetation and weather condition in the catchment area. the topography and nature of soil in the catchment area. all of above. rain fall pattern, shape and size of catchment area. amount of vegetation and weather condition in the catchment area. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Plug setting of a relay can be altered by varying no. of ampere-turns. air gap of magnetic path. none of these. adjustable back up stop. no. of ampere-turns. air gap of magnetic path. none of these. adjustable back up stop. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Differential relays does not used for which of the following faults? faults within a generator through faults both 1 and 2 faults within a transformer faults within a generator through faults both 1 and 2 faults within a transformer ANSWER DOWNLOAD EXAMIANS APP
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