In case of single line to ground fault

1.	In case of single line to ground fault
A.	All sequence networks are connected in parallel
B.	All sequence networks are connected in series
C.	Positive and negative sequence networks are connected in parallel
D.	Zero and negative sequence networks are connected in series
Answer» C. Positive and negative sequence networks are connected in parallel

Discussion

No Comment Found

Related MCQs

Five alternators, each of which is rated for 10 MVA, 11 KV with 25% reactance, operate in parallel order. What will be the short circuit level in the bus bar?
For a fault at the terminals of the synchronous generator, the fault current is maximum for a
A 50 Hz, 4 Pole, 500 MVA, 22 kV turbo generator is delivering rated MVA at a power factor of 0.8. Suddenly a fault occurs reducing the electric power output by 40%. Neglect the losses and assume constant power input to the shaft. The accelerating torque in the generator at the time of fault is
A lossless transmission line with 0.2 pu reactance per phase uniformly distributed along the length of the line, connecting a generator bus to a load bus, is protected up to 80 % of its length by a distance relay placed at the generator bus. The generator terminal voltage is 1 pu. There is no generation at the load bus. The threshold pu current for operation of the distance relay for a solid three phase-to-ground fault on the transmission line is closest to:
Line-to-ground fault occurs:
In case of single line to ground fault
A sustained three phase fault occurs in the power system shown in the figure. The current and voltage phasors during the fault (on a common reference), after the natural transients have died down, are also shown. Where is the fault located?
At the terminal of a 3ϕ, 6.6 kV, 10 MVA alternator, a load R = 200 Ω is connected between two phases, and other phase is kept open. The sequence impedance of the alternator is Z1 = Z2 = j 5Ω and Z0 = j2Ω. What is the current through the load resistance?

In case of single line to ground fault

Discussion

No Comment Found

Related MCQs

Reply to Comment