Power Systems Four identical alternators each are rated for 20 MVA, 11 KV having a subtransient reactance of 16% are working in parallel. The short circuit level at the busbar is 100 MVA 400 MVA 500 MVA 125 MVA 100 MVA 400 MVA 500 MVA 125 MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? In case of parallel transmission lines stability increases both 1 and 3 fault current increases fault current reduces stability increases both 1 and 3 fault current increases fault current reduces ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which one of the following relays has the capability of anticipating the possible major fault in a transformer? Differential relay Buchholz relay Over fluxing relay Over current relay Differential relay Buchholz relay Over fluxing relay Over current relay ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following circuit breakers produce least arc energy? Air blast CB. Plain oil CB. Air break CB. Minimum oil CB. Air blast CB. Plain oil CB. Air break CB. Minimum oil CB. 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. Halves. Doubled. Decrease but does not halves. Increase but does not doubled. Halves. Doubled. Decrease but does not halves. ANSWER DOWNLOAD EXAMIANS APP
Power Systems To improve the efficiency of thermal power plant ________________ is placed between boiler and turbine. economizer. air preheater. ash handling point. superheater. economizer. air preheater. ash handling point. superheater. ANSWER DOWNLOAD EXAMIANS APP
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