Power Systems Which of the following circuit breakers produce least arc energy? Air blast CB. Plain oil CB. Minimum oil CB. Air break CB. Air blast CB. Plain oil CB. Minimum oil CB. Air break CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Plug setting of a relay can be altered by varying air gap of magnetic path. no. of ampere-turns. adjustable back up stop. none of these. air gap of magnetic path. no. of ampere-turns. adjustable back up stop. none of these. ANSWER DOWNLOAD EXAMIANS APP
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 from turbine exhaust to condenser. low alternative efficiency. high energy loss in boiler. low steam turbine mechanical efficiency. high energy loss from turbine exhaust to condenser. low alternative efficiency. high energy loss in boiler. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The sequence components of the fault current are as follows : Ipositive = j1.5 pu, Inegative = − j0.5 pu, Izero = − j pu Which fault is this? LG. LLG. LL. LLLG. LG. LLG. LL. LLLG. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Keeping in view the cost and overall effectiveness, the following circuit breaker is best suited for capacitor bank switching? SF6 CB. Oil CB. Air blast CB. Vacuum CB. SF6 CB. Oil CB. Air blast CB. Vacuum CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The specific speed ( NS ) of turbine is given by none of these. N√( P ) / H2/3. P√( N ) / H3/2. N√( P ) / H1.25. none of these. N√( P ) / H2/3. P√( N ) / H3/2. N√( P ) / H1.25. ANSWER DOWNLOAD EXAMIANS APP
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