Power Systems Which of the following is/are the desirable properties of a insulator material? High ratio of puncture strength to flash over. Both 1 and 2 High relative permittivity Low ratio of puncture strength to flash over. High ratio of puncture strength to flash over. Both 1 and 2 High relative permittivity Low ratio of puncture strength to flash over. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Attenuation occurs due to both 1 and 3 conductance resistance inductance both 1 and 3 conductance resistance inductance ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following transformer is used in sub station for operating a protective relay? distribution transformer capacitor voltage transformer auto transformer All of these distribution transformer capacitor voltage transformer auto transformer All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the penalty factor of a plant is unity, its incremental transmission loss is -1 1 0 None of these -1 1 0 None of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems What are the tests performed for oil-filled and gas-filled cables ? Impulse tests. Load cycle tests. All of these. Thermal stability test. Impulse tests. Load cycle tests. All of these. Thermal stability test. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The characteristic impedance of a transmission on line is Directly proportional to its length. Inversely proportional to its length. Directly proportional to square root of its length. Independent of its length. Directly proportional to its length. Inversely proportional to its length. Directly proportional to square root of its length. Independent of its length. ANSWER DOWNLOAD EXAMIANS APP
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