Power Systems In coal fired thermal power stations, what are the electrostatic precipitators used for? To keep the air heaters clean To remove dust particles setting on the bus bar conductors in the station switch yard All of these To collect the dust particles from the flue gases To keep the air heaters clean To remove dust particles setting on the bus bar conductors in the station switch yard All of these To collect the dust particles from the flue gases ANSWER DOWNLOAD EXAMIANS APP
Power Systems A generator has a rating of 10 MVA, 5 kV has a reactance of 0.02 pu. Find the reactance at a new base values of 50 MVA, 10 kV? 0.02 0.25 0.05 0.025 0.02 0.25 0.05 0.025 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 200 MW capacity generator has a speed regulation of 4% for a frequency drop of 0.05 Hz. Find the power input supplied by the turbine for maintaining constant frequency? 5 MW 20 MW 15 MW 10 MW 5 MW 20 MW 15 MW 10 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? The elements of each row of a Y bus matrix for load flow studies in power system add up to zero always if both 2 and 3 are satisfied if the shunt admittances at the buses are ignored if the mutual couplings between transmission lines are absent always if both 2 and 3 are satisfied if the shunt admittances at the buses are ignored if the mutual couplings between transmission lines are absent ANSWER DOWNLOAD EXAMIANS APP
Power Systems Oxide film arrestor has which of the following properties? Both A and B. It is expensive. Does not require daily charging. Installed at points of transmission line where daily visit is difficult. Both A and B. It is expensive. Does not require daily charging. Installed at points of transmission line where daily visit is difficult. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The main objectives of electrical power transmission is/are nether 1 nor 2 Voltage regulation of the transmission line must be zero or minimum both 1 and 2 Transmission system must be more efficient with minimum line losses nether 1 nor 2 Voltage regulation of the transmission line must be zero or minimum both 1 and 2 Transmission system must be more efficient with minimum line losses ANSWER DOWNLOAD EXAMIANS APP
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