Power Systems Which type of connection is employed for current transformers for the protection of star- delta connected 3-phase transformer? delta-star star-delta delta-delta star-star delta-star star-delta delta-delta star-star ANSWER DOWNLOAD EXAMIANS APP
Power Systems For a lossy transmission line, the characteristic impedance does not depend on The load terminating the line. The conductivity of conductors. The permittivity of the dielectric separating the conductor. The operating frequency of the line. The load terminating the line. The conductivity of conductors. The permittivity of the dielectric separating the conductor. The operating frequency of the line. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The inertia constant of 100 MVA, 50 Hz, 4 pole generator is 10 MJ/MVA. If the mechanical input to the machine is suddenly raised from 50 MW to 75 MW, the rotor acceleration will be equal to 225 electrical degrees/s² 125 electrical degrees/s² 22.5 electrical degrees/s² 12.5 electrical degrees/s² 225 electrical degrees/s² 125 electrical degrees/s² 22.5 electrical degrees/s² 12.5 electrical degrees/s² ANSWER DOWNLOAD EXAMIANS APP
Power Systems IF the time of operation of a relay for unity TMS is 10 sec then the time of operation for 0.5 TMS is 5 sec. none of these. 10 sec. 20 sec. 5 sec. none of these. 10 sec. 20 sec. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In thermal power plants the size of coal after crushing 20 - 25 mm. 300 mm. 200 - 205 mm. 40 mm. 20 - 25 mm. 300 mm. 200 - 205 mm. 40 mm. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Isolator in sub station is open under ------------- condition? short circuit full load any of the above no load short circuit full load any of the above no load ANSWER DOWNLOAD EXAMIANS APP
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