Power Systems A 3-phase, 110 kV coaxial XLPE insulated power cable delivering power at 50 Hz, has a capacitance of 125 nF/km. If the dielectric loss tangent of XLPE is 2*10^-4, then dielcetric power loss in this cable in W/km/phase is 35.45 31.7 23.9 38.6 35.45 31.7 23.9 38.6 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Stock bridge dampers are used in case hill areas to over come the which problem? unequal ice loading increase string efficiency increase power factor All of these unequal ice loading increase string efficiency increase power factor All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems When a neutral point of 3 - Φ system is directly connected to earth then it has what type of grounding? Reactance. Resistance. Peterson coil. Solid. Reactance. Resistance. Peterson coil. Solid. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Frequencies must be same in which of the following line to exchange the power from one place to other place ? both 1 and 2 Asynchronous line Synchronous line No need of same frequency for exchange of power both 1 and 2 Asynchronous line Synchronous line No need of same frequency for exchange of power ANSWER DOWNLOAD EXAMIANS APP
Power Systems A string insulator has 4 units. The voltage across bottom most unit is 10 kV and its efficiency is 90%. Find the total operating phase voltage? 36 kV 32 kV 45 kV 40 kV 36 kV 32 kV 45 kV 40 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems To reduce the radio interference which line is/are transposed? Both power and telecommunication lines Power line either 1 or 2 None of these Both power and telecommunication lines Power line either 1 or 2 None of these ANSWER DOWNLOAD EXAMIANS APP
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