Power Systems What will be the ratio of the C.T. on the H.V side of a 3 - φ star / delta 33 / 11 kV transformer if the protecting CT on the LV side has a ratio of 300 : 5 ? 150 : 4 / √3. 200 : 5 / √3. 120 : 6 / √3. 100 : 5 / √3. 150 : 4 / √3. 200 : 5 / √3. 120 : 6 / √3. 100 : 5 / √3. 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 45 kV 32 kV 40 kV 36 kV 45 kV 32 kV 40 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Consider a long, two wire line composed of solid round conductors. The radius of both conductors is 0.25 cm and distance between their centers is 100 cm. If this distance is doubled, then the inductance per unit length. Increase but does not doubled. Doubled. Halves. Decrease but does not halves. Increase but does not doubled. Doubled. Halves. Decrease but does not halves. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following are the fissile materials None of these. U235 and Th239. U235, U233 and Pu239. U238 and Th232. None of these. U235 and Th239. U235, U233 and Pu239. U238 and Th232. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The characteristic impedance of a transmission line is Directly proportional to its length. Independent of its length. Directly proportional to square root of its length. Inversely proportional to square root of its length. Directly proportional to its length. Independent of its length. Directly proportional to square root of its length. Inversely proportional to square root of its length. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the frequency is increased, then skin effect will remains unaffected decreases any of the above increases remains unaffected decreases any of the above increases ANSWER DOWNLOAD EXAMIANS APP
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