Power Systems Which of the following is/are the desirable properties of a insulator material? High relative permittivity Both 1 and 2 High ratio of puncture strength to flash over. Low ratio of puncture strength to flash over. High relative permittivity Both 1 and 2 High ratio of puncture strength to flash over. Low ratio of puncture strength to flash over. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has (2 + j4)Ω impedance, 100 MVA and base voltage is 10 KV. Find the per unit impedance value of transmission line? (4 + j8 ) pu (0.5 + j1 ) pu (1 + j2 ) pu (2 + j4 ) pu (4 + j8 ) pu (0.5 + j1 ) pu (1 + j2 ) pu (2 + j4 ) pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3 layer and diameter of each strand is d, then find the total diameter of ACSR conductor? d 5d 3d 2d d 5d 3d 2d ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following effects are associated with transmission line All of these skin effect ferranti effect corona effect All of these skin effect ferranti effect corona effect ANSWER DOWNLOAD EXAMIANS APP
Power Systems Main bus bar protection scheme is /are none of these. differential protection. both fault bus and differential protection. fault bus protection. none of these. differential protection. both fault bus and differential protection. fault bus protection. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The surge impedance of a 400 km long overhead transmission line is 420 Ω. For a 200 km length of the same line, the surge impedance will be 400 Ω 210 Ω 840 Ω 420 Ω 400 Ω 210 Ω 840 Ω 420 Ω ANSWER DOWNLOAD EXAMIANS APP
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