Power Systems What type of back up protection is used for alternators? Buchholz relay. Mho relay. Impedance relay. IDMT relay. Buchholz relay. Mho relay. Impedance relay. IDMT relay. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the advantages of synchronous phase modifier over the shunt compensation? initial cost is low smooth voltage regulation is possible by controlling excitation single unit can be used as both capacitance and inductor by adjusting the excitation both 1 and 2 initial cost is low smooth voltage regulation is possible by controlling excitation single unit can be used as both capacitance and inductor by adjusting the excitation both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Mho relay is used for the protection of short length lines. medium length lines. no length criterion. long transmission lines. short length lines. medium length lines. no length criterion. long transmission lines. ANSWER DOWNLOAD EXAMIANS APP
Power Systems When bundle conductor are used in place of single conductor the effective inductance and capacitance will respectively decrease and increase. decrease and remain unaffected. increase and remain unaffected. increase and decrease. decrease and increase. decrease and remain unaffected. increase and remain unaffected. increase and decrease. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A three phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 secs. The symmetrical breaking current is 55 kA. 35 kA. 45 kA. 50 kA. 55 kA. 35 kA. 45 kA. 50 kA. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The charging reactance of 50 km transmission line is 1500 Ω. What is the charging reactance for 100 km length of line? 3000 Ω 1500 Ω 750 Ω 1000 Ω 3000 Ω 1500 Ω 750 Ω 1000 Ω ANSWER DOWNLOAD EXAMIANS APP
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