The incremental fuel costs for two generating units G1 and G2 are given by Ic1 = 25 + 0.2 PG1 and Ic2 = 32 + 0.2 PG2, where PG1 and PG2 are real powers generated by the units. The economic allocation for a total load of 250 MW, neglecting transmission loss, is given by

Power Systems
The incremental fuel costs for two generating units G1 and G2 are given by Ic1 = 25 + 0.2 PG1 and Ic2 = 32 + 0.2 PG2, where PG1 and PG2 are real powers generated by the units. The economic allocation for a total load of 250 MW, neglecting transmission loss, is given by

PG1 = 142.5 MW and PG2 = 107.5 MW

PG1 = 100 MW and PG2 = 150 MW

PG1 = 125 MW and PG2 = 125 MW

PG1 = 109.75 MW and PG2 = 140.25 MW

PG1 = 142.5 MW and PG2 = 107.5 MW

PG1 = 100 MW and PG2 = 150 MW

PG1 = 125 MW and PG2 = 125 MW

PG1 = 109.75 MW and PG2 = 140.25 MW

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Power Systems
Which of the following is/are the advantages of synchronous phase modifier over the shunt compensation?

both 1 and 2

single unit can be used as both capacitance and inductor by adjusting the excitation

smooth voltage regulation is possible by controlling excitation

initial cost is low

both 1 and 2

single unit can be used as both capacitance and inductor by adjusting the excitation

smooth voltage regulation is possible by controlling excitation

initial cost is low

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Power Systems
A loss less transmission line has a length of 600 km, find the phase shift of voltage signal?

36°

42°

45°

90°

36°

42°

45°

90°

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Power Systems
A transmission line has a reactance of 1 Pu is operating at Vs = Vr = 1 Pu. The generator is connected at source end which is delivering 0.5 Pu of active power and the transmission line is compensated with a series capacitance of 0.5 Pu. Find the load angle with series capacitance compensation ?

10.5°

35.5°

14.5°

29°

10.5°

35.5°

14.5°

29°

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Power Systems
In a 3-phase, 5 kV, 5 MVA system, what is the base impedance?

0.5 ohm

50 ohms

500 ohms

5 ohms

0.5 ohm

50 ohms

500 ohms

5 ohms

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Power Systems
Location of a surge tank, in an hydro electric power station is near

reservoir.

turbine.

tail race.

dam.

reservoir.

turbine.

tail race.

dam.

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Power Systems

Power Systems The incremental fuel costs for two generating units G1 and G2 are given by Ic1 = 25 + 0.2 PG1 and Ic2 = 32 + 0.2 PG2, where PG1 and PG2 are real powers generated by the units. The economic allocation for a total load of 250 MW, neglecting transmission loss, is given by

Power Systems Which of the following is/are the advantages of synchronous phase modifier over the shunt compensation?

Power Systems A loss less transmission line has a length of 600 km, find the phase shift of voltage signal?

Power Systems In a 3-phase, 5 kV, 5 MVA system, what is the base impedance?

Power Systems Location of a surge tank, in an hydro electric power station is near

Power Systems
The incremental fuel costs for two generating units G1 and G2 are given by Ic1 = 25 + 0.2 PG1 and Ic2 = 32 + 0.2 PG2, where PG1 and PG2 are real powers generated by the units. The economic allocation for a total load of 250 MW, neglecting transmission loss, is given by

Power Systems
Which of the following is/are the advantages of synchronous phase modifier over the shunt compensation?

Power Systems
A loss less transmission line has a length of 600 km, find the phase shift of voltage signal?

Power Systems
In a 3-phase, 5 kV, 5 MVA system, what is the base impedance?

Power Systems
Location of a surge tank, in an hydro electric power station is near