Power Systems Which of the following is/are the desirable properties of a insulator material? Both 1 and 2 High relative permittivity High ratio of puncture strength to flash over. Low ratio of puncture strength to flash over. Both 1 and 2 High relative permittivity High ratio of puncture strength to flash over. Low ratio of puncture strength to flash over. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Proximity effect is more in case of None of these same in both cases power cables over head lines None of these same in both cases power cables over head lines ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following are the fissile materials None of these. U235 and Th239. U238 and Th232. U235, U233 and Pu239. None of these. U235 and Th239. U238 and Th232. U235, U233 and Pu239. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Find the value of a729, where "a" is the operator α² 0 1 α α² 0 1 α ANSWER DOWNLOAD EXAMIANS APP
Power Systems An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z0 = j 0.15 pu, Z1 = Z2 = j 0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for single line to ground fault is 2.5 pu 4.28 pu 7.25 pu 3.75 pu 2.5 pu 4.28 pu 7.25 pu 3.75 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Most commonly used material for insulator is glass porcelain All of these mica glass porcelain All of these mica ANSWER DOWNLOAD EXAMIANS APP