A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu?

Power Systems
A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu?

3.975 pu

1.375 pu

2.4 pu

0.2 pu

3.975 pu

1.375 pu

2.4 pu

0.2 pu

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Power Systems
One million cubic meters of water is stored in a reservoir feeding a water turbine. The density of water is 993 kg/m³. If the centre of mass of water is 50 meters above the turbine and losses are negligible, the energy produced by that volume of water is

120 MWhr

135.3 MWhr

140 MWhr

130.2 MWhr

120 MWhr

135.3 MWhr

140 MWhr

130.2 MWhr

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Power Systems
Three generators rated 100 MVA, 11 kV have an impedance of 0.15 pu each. If in the same plant, these generators are being replaced by a single equivalent generator, the effective impedance of equivalent generator will be

0.45 pu

0.05 pu

0.15 pu

0.25 pu

0.45 pu

0.05 pu

0.15 pu

0.25 pu

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Power Systems
Find the number of strands of ACSR conductor for 3 layer transmission line?

29

1

7

19

29

1

7

19

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Power Systems
If R = 84 ohm/Km, G = 10-6 mho/Km, H = 0.01 H/Km, C = 0.061 μ F/Km and frequency = 1000 Hz, then what is the value of propagation constant of the transmission line

0.01 + j 0.02 per Km.

0.09 + j 0.018 per Km.

None of them.

0.018 per Km.

0.01 + j 0.02 per Km.

0.09 + j 0.018 per Km.

None of them.

0.018 per Km.

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Power Systems
In a biased differential relay the bias is defined as the ratio of

number of turns of restraining and operating coil.

fault current and operating coil current.

operating coil current and restraining coil current.

fault current and restraining coil current.

number of turns of restraining and operating coil.

fault current and operating coil current.

operating coil current and restraining coil current.

fault current and restraining coil current.

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Power Systems

Power Systems A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu?

Power Systems One million cubic meters of water is stored in a reservoir feeding a water turbine. The density of water is 993 kg/m³. If the centre of mass of water is 50 meters above the turbine and losses are negligible, the energy produced by that volume of water is

Power Systems Three generators rated 100 MVA, 11 kV have an impedance of 0.15 pu each. If in the same plant, these generators are being replaced by a single equivalent generator, the effective impedance of equivalent generator will be

Power Systems Find the number of strands of ACSR conductor for 3 layer transmission line?

Power Systems If R = 84 ohm/Km, G = 10-6 mho/Km, H = 0.01 H/Km, C = 0.061 μ F/Km and frequency = 1000 Hz, then what is the value of propagation constant of the transmission line

Power Systems In a biased differential relay the bias is defined as the ratio of

Power Systems
A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu?

Power Systems
One million cubic meters of water is stored in a reservoir feeding a water turbine. The density of water is 993 kg/m³. If the centre of mass of water is 50 meters above the turbine and losses are negligible, the energy produced by that volume of water is

Power Systems
Three generators rated 100 MVA, 11 kV have an impedance of 0.15 pu each. If in the same plant, these generators are being replaced by a single equivalent generator, the effective impedance of equivalent generator will be

Power Systems
Find the number of strands of ACSR conductor for 3 layer transmission line?

Power Systems
If R = 84 ohm/Km, G = 10-6 mho/Km, H = 0.01 H/Km, C = 0.061 μ F/Km and frequency = 1000 Hz, then what is the value of propagation constant of the transmission line

Power Systems
In a biased differential relay the bias is defined as the ratio of