Power Systems Lightning arresters are made up of which material? silver silicon oxide copper any of the above silver silicon oxide copper any of the above ANSWER DOWNLOAD EXAMIANS APP
Power Systems For a lossy transmission line, the characteristic impedance does not depend on The operating frequency of the line. The permittivity of the dielectric separating the conductor. The load terminating the line. The conductivity of conductors. The operating frequency of the line. The permittivity of the dielectric separating the conductor. The load terminating the line. The conductivity of conductors. ANSWER DOWNLOAD EXAMIANS APP
Power Systems For some given transmission line the expression for voltage regulation is given by (Vs - Vr)/Vr *100%. Hence, this must be a short line this may either be a medium line or short line None of these this expression is true for any line this must be a short line this may either be a medium line or short line None of these this expression is true for any line ANSWER DOWNLOAD EXAMIANS APP
Power Systems Load frequency control is achieved by properly matching the individual machines generator ratings. reactive powers. turbine inputs. generated voltages. generator ratings. reactive powers. turbine inputs. generated voltages. 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 22.5 electrical degrees/s² 225 electrical degrees/s² 125 electrical degrees/s² 12.5 electrical degrees/s² 22.5 electrical degrees/s² 225 electrical degrees/s² 125 electrical degrees/s² 12.5 electrical degrees/s² ANSWER DOWNLOAD EXAMIANS APP
Power Systems If we increase the spacing between the phase conductors, the line capacitance remains unaffected increases None of these decreases remains unaffected increases None of these decreases ANSWER DOWNLOAD EXAMIANS APP
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