Power Systems An isolated synchronous generator with transient reactance equal to 0.1 pu on a 100 MVA base is connected to the high voltage bus through a step up transformer of reactance 0.1 pu on a 100 MVA base. The fault level at the bus is 400 MVA 200 MVA 100 MVA 500 MVA 400 MVA 200 MVA 100 MVA 500 MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems The per unit impedance of a circuit element is 0.30. If the base kV and base MVA are halved, then the new value of the per unit impedance of the circuit element will be 0.0060 0.30 0.0030 0.60 0.0060 0.30 0.0030 0.60 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The specific speed ( NS ) of turbine is given by none of these. N√( P ) / H1.25. P√( N ) / H3/2. N√( P ) / H2/3. none of these. N√( P ) / H1.25. P√( N ) / H3/2. N√( P ) / H2/3. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A sodium graphite reactors use a mixture of sodium and graphite as moderator. sodium as coolant and graphite as moderator. a mixture of sodium and graphite as coolant. sodium as moderator and graphite as coolant. a mixture of sodium and graphite as moderator. sodium as coolant and graphite as moderator. a mixture of sodium and graphite as coolant. sodium as moderator and graphite as coolant. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The per unit value of a 2 ohm resistor at 100 MVA and 10 kV base voltage is 0.2 pu 0.5 pu 4 pu 2 pu 0.2 pu 0.5 pu 4 pu 2 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems The pickup value of relay is 6.5 Amp and fault current in relay coil is 39 Amp. Its plug setting multiplier is 10 A. 6 A. 7 A. 8 A. 10 A. 6 A. 7 A. 8 A. ANSWER DOWNLOAD EXAMIANS APP
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