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. 20 sec. 10 sec. none of these. 5 sec. 20 sec. 10 sec. none of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If we increase the spacing between the phase conductors, the value of line inductance decrease increase remains unaffected None of these decrease increase remains unaffected None of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Advantages of per unit system is/are No units for any quantity All of these It has units for all quantities Need of transformation ratio No units for any quantity All of these It has units for all quantities Need of transformation ratio ANSWER DOWNLOAD EXAMIANS APP
Power Systems A guard ring is used in string type insulator having 3 units to improve string efficiency. Find the capacitance of metal link 2 if pin to earth capacitance of each unit is 1 F? 2 F 1 F 0.5 F 4 F 2 F 1 F 0.5 F 4 F ANSWER DOWNLOAD EXAMIANS APP
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 38.6 31.7 35.45 23.9 38.6 31.7 35.45 23.9 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3 - Φ, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is 35 kA. 3600 A. 1200 A. 104.8 kA. 35 kA. 3600 A. 1200 A. 104.8 kA. ANSWER DOWNLOAD EXAMIANS APP
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