Power Systems The positive (Z1), negative (Z2) and zero sequence (Z0) impedances of a transmission line follows the relation Z1 = Z2 = Z0 any of the above (Z1 = Z2) > Z0 (Z1 = Z2) < Z0 Z1 = Z2 = Z0 any of the above (Z1 = Z2) > Z0 (Z1 = Z2) < Z0 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The angular moment of 10 MVA generator is 0.2. Find the new value of angular moment for 20 MVA base? 0.25 pu 0.1 pu 0.2 pu 0.4 pu 0.25 pu 0.1 pu 0.2 pu 0.4 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems The function of draft tube is reaction turbine is to reduce water hammer. convert kinetic energy of water. increase flow rate of water. all of above. reduce water hammer. convert kinetic energy of water. increase flow rate of water. all of above. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the disadvantages of phase modifiers? Initial cost of synchronous phase modifier is higher All of these It consumes both active and reactive power It requires more maintenance because of running equipment Initial cost of synchronous phase modifier is higher All of these It consumes both active and reactive power It requires more maintenance because of running equipment ANSWER DOWNLOAD EXAMIANS APP
Power Systems To reduce the radio interference which line is/are transposed? Both power and telecommunication lines either 1 or 2 None of these Power line Both power and telecommunication lines either 1 or 2 None of these Power line ANSWER DOWNLOAD EXAMIANS APP
Power Systems Lightning arresters are used for protection of equipment from open circuits protection of equipment from short circuits All of these protection of equipment from external lightning protection of equipment from open circuits protection of equipment from short circuits All of these protection of equipment from external lightning ANSWER DOWNLOAD EXAMIANS APP
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