Power Systems Where the voltage is high and current to be interrupted is low, Which of following the breaker is preferable? Any of these. Vacuum CB. Oil CB. Air blast CB. Any of these. Vacuum CB. Oil CB. Air blast CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following circuit breakers produce least arc energy? Air break CB. Plain oil CB. Air blast CB. Minimum oil CB. Air break CB. Plain oil CB. Air blast CB. Minimum oil CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has self and mutual impedances are 0.8 and 0 pu respectively. Find the positive, negative and zero sequence impedances respectively? 0.6, 0.6 and 0.6 pu 0.6, 0.6 and 1.2 pu 0.8, 0.8 and 0.8 pu 0.6, 0.8 and 1.2 pu 0.6, 0.6 and 0.6 pu 0.6, 0.6 and 1.2 pu 0.8, 0.8 and 0.8 pu 0.6, 0.8 and 1.2 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line is operating under no load has ABCD parameters B = 100∠90° has a phase shift of 0.2 rad, how much shunt reactor is required for compensation of ferranti effect? 2 H 15.9 H 2 mH 15.9 mH 2 H 15.9 H 2 mH 15.9 mH ANSWER DOWNLOAD EXAMIANS APP
Power Systems A thermal protection relay provides protection against what? Over load any of the above Temperature Short circuit Over load any of the above Temperature Short circuit ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? In case of parallel transmission lines both 1 and 3 stability increases fault current increases fault current reduces both 1 and 3 stability increases fault current increases fault current reduces ANSWER DOWNLOAD EXAMIANS APP
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