Power Systems To protect the power transformer ( Y-Y with neutral grounded) against fault, which type of connection do the current transformers have? Δ-Δ connection Y-Y connection Y-Δ connection Δ-Y connection Δ-Δ connection Y-Y connection Y-Δ connection Δ-Y connection ANSWER DOWNLOAD EXAMIANS APP
Power Systems Power transmission lines are transposed to reduce ferranti effect radio interference proximity effect skin effect ferranti effect radio interference proximity effect skin effect ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the fault current is 2000 A, the relay setting is 50% and CT ratio is 400 : 5, then plug setting multiplier will be 50. 25. 15. 10. 50. 25. 15. 10. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following faults is/are treated as external faults? All of these Failure of prime mover of the generator Failure of excitation Over voltage All of these Failure of prime mover of the generator Failure of excitation Over voltage ANSWER DOWNLOAD EXAMIANS APP
Power Systems Earthing switch is used for measuring of safety voltage All of these discharging residual energies protection of equipment from ground faults measuring of safety voltage All of these discharging residual energies protection of equipment from ground faults ANSWER DOWNLOAD EXAMIANS APP
Power Systems A thermal power station needs space less than that required by atomic power station of the same output. less than that required by a gas turbine power plant of same output. less than that required by hydro-power station of same capacity. less than that required by the diesel power station of same output. less than that required by atomic power station of the same output. less than that required by a gas turbine power plant of same output. less than that required by hydro-power station of same capacity. less than that required by the diesel power station of same output. ANSWER DOWNLOAD EXAMIANS APP
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