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Q: (a) A single phase, unity power factor load takes 70 A at 25 kV. Using a base voltage of 60 kV and…

A: Per unit

Q: Q3. For the power system in Problem of Q2, the synchronous motor absorbs 1500 MW at 0.8 power factor…

A: Given data: Synchronous motor Real Power absorbed by the synchronous machine, P3=1500 MW Power…

Q: Please answer this diligently. Other answers in the internet seems wrong. Please help me understand…

A:

Q: Note: It is expected from student to develop impedance matrices of three phase power system. Develop…

A: From the given power system network Impedance matrix is develop as shown below

Q: What is minimum and non minimum phase system. Draw its phase characteristic curve.

A: Transfer function is ratio of output signal to input signal. It is the given as ratio of Laplace…

Q: A three phase symmetrical double circuit line is arranged in a horizontal plane as shown in figure…

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Q: please write introduction about Analysis of 3 Phase star connected circuit Note:please write details…

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Q: (a) The base impedance in (N) (b) The reactive power drawn by the load (p.u.) (c) The total current…

A:

Q: The impedance per phase of 3-phase transmission line on a base of 100 MVA, 100 kV is 2 pu. Find the…

A: Given- 3-phase transmission line- MVAnew=400,MVAold=100,kVold=100,kVnew=400,Zold (pu). To Find- The…

Q: Considering two parallel three-phase circuits that are close together, when calculating the…

A: whether the mutual coupling effects are significant enough to be included in the calculations or if…

Q: In a three phase overhead system , each line is suspended by a string of three insulator. The…

A:

Q: . Contribution of load flow studies to erect new power station?

A:

Q: Is it possible to measure the phase-shift angle in an AC single-phase circuit by an indirect method…

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Q: () State TWO (2) advantages of three-phase system over single-phase system. (ii) For a three-phase…

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Q: Single phasing happens when one phase of a three phase source becomes unavailable.  True  False

A: Given  A true or false question based on single phasing condition. Please find the answer below.

Q: Develop impedance matrix (Z-bus) of power system network as shown in figure. [Values are given in…

A: Z bus matrix has 4 buses apart from reference bus so, matrix will be of 4x4. and…

Q: Example 60 MVA, 13.8 kV a balance three phase load with 0.8 lagging power factor. Determine for the…

A:

Q: Write about voltage drop and power loss for Radial d.c distribution system.

A: In the radial dc distribution system, various feeders are connected to the single substation such…

Q: State the relation between line and phase values of voltage and current for 3-pha se DELTA connected…

A:

Q: A single phase transmission line is delivering 450 kVA load at 12 kV. Its resistance is 4.5 and…

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Q: In a -ve sequence 3-phase supply,___________________ a. Y lags B by 120 degree b. both R  and Y in…

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Q: For the 3-phase system shown below, the source line voltage is 460 V, 60 Hz, 1). Phase "a" voltage,…

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Q: Please answer this diligently. Other answers in the internet seems wrong. Please help me understand…

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Q: What can you say about the flow of power as a function of time between a balanced three-phase source…

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Q: Q3. For the power system in Problem of Q2, the synchronous motor absorbs 1500 MW at 0.8 power factor…

A: Given: For the power system in the figure below: The synchronous motor absorbs 1500 MW at 0.8 power…

Q: Note: It is expected from student to develop impedance matrices ofthree phase power system. Develop…

A: Given: Pwer sytem network Z-bus can be build by the 4 types of modification:Type-1: New to…

Q: Draw an impedance diagram for the electric power system shown in Figure 3 showing all impedances in…

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Q: 2_ What case/cases in which the measured phase current include the three symmetrical components (…

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Q: power transmission and distribution subject

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A: Using the symmetrical components, any set of an unbalanced three-phase system can be resolved in the…

Q: In a three phase overhead system , each line is suspended by a string of three insulators. The…

A: Given V1=8 kV V2=11 kV m=CshCsat V2=V1(1+m)(1+m)=V2V1=118=1.3751+m=1.375m=1.375-1…

Q: Write a conclusion about voltage drop and power loss calculations for Ring d.c distribution system.

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Q: The value of inductance per conductor in a three-phase line is time(s) the loop inductance for the…

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Q: The reactance diagram of the power system network is shown in figure below, where the impedance is…

A:

Q: For transferring electrical power at 220 kV, six conductors of ACSR Drake constitute a 60Hz double…

A: Considering complexity of the solution, we are answering the first t0w subparts, please repost your…

Q: In a three phase overhead system, each line is suspended by a string of three insulator. The…

A: In a three phase overhead system, each line is suspended by a string of three insulator. The…

Q: The power factor must be close to . . To insure that losses in the transmission lines will be…

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Fault Analysis

In an electrical engineering system, a fault is an abnormal electric current flowing through the system, and fault analysis is the study of these faults. For instance, a short-circuit is a fault where the live wire touches the ground or neutral wire. If a circuit is interrupted by a failure of a current-carrying wire then an open circuit fault occurs. The open-circuit faults are also called series faults. One or more phases or ground may be involved in a three-phase fault or may occur only between two phases. Current flows into the earth in case of a ground fault or earth fault. For most situations, the prospective short circuit current of a fault that is predictable can be calculated. To limit the loss of service because of a failure, the protective devices can detect fault conditions and operate circuit breakers and also other devices. All phases equally can be affected in a poly-phase system which is known as symmetric electrical fault. The asymmetric fault becomes more complicated to analyze if only some phases are affected. By using methods such as symmetrical components, the power system analysis of these types of faults is often simplified. The main objective of power system protection is to design, detect, and interrupt power system faults.