Consider the following measurements on two resistive loads. (Three phase system were only two phases and neutral is in use.)   V A W cos ϕ VAr VA L1-N 240,7 0,407 848 -0,86 -505 987 L2-N 242 0,411 863 0,87 493 991 2. Calculate the symmetrical components of the current. Is the current symmetrical?

Q: In Industry, three Inductive loads, each of resistance R = 38 ohms and inductance L = 0.18 H are…

A: In this question,  Impedance is connected in delta with 430V, 50/HZ supply.  We know X= wL Find the…

Q: For a 220V, 60Hz single phase voltage controller is used for controlling flow of power in to a…

A: Given: A 220V, 60Hz single phase voltage controller. Load XL=12 Ω and R=5 Ω

Q: Three unequal single-phase loads so connected in delta across the lines of a balanced, 3-phase, 230…

A: According to the given data, the circuit is drawn below

Q: 4- An out balance three phase star connected load has the following complex Currents i A, I, =le…

A: In this question we will find neutral current...

Q: 1. Refer to Figure 1. A Y-connected source supplies 3 balanced 3-phase loads. The source has voltage…

A: As per the client requirements, we are providing the solution of A, B and C subparts in multipart…

Q: 2. Determine the: (a) looking back resistance, (b) open-circuit emf at the load, (c) load current,…

A: Note:- Taking the resistance values of the given resistors in ohm.

Q: 3. A 50-Hz, 250-V single-phase power line has the following loads placed across it in parallel : 4…

A: 3) Given : A 50-Hz, 250-V single phase power line  Three Loads are connected in parallel across the…

Q: Refer to Figure 1. A Y-connected source supplies 3 balanced 3-phase loads. The source has voltage…

A: To solve  D, E, F, & G

Q: 1. Refer to Figure 1. A Y-connected source supplies 3 balanced 3-phase loads. The source has voltage…

A:

Q: Q2/B: The unbalanced Y-load of figure shown below has balanced voltages of 100 volt and the acb…

A:

Q: Q.1: a. Three watt-meters W1,W2, W3 are connected to phases a, b, and c respectively to measure the…

A:

Q: The following single-phase loads are connected to a 415V three-phase supply. Z, = (25- j15)n, z,…

A: The data given in the question are: VL=415V, VPH=4153=239.6 VZR=25-j15 Ω, ZY=45+j10 Ω, ZB=5+j30 Ω…

Q: A star-connected three-phase load absorb 3000 W with power factor 0.433 lagging has a resistance…

A: In Star connection, line current is equal to Phase current. The detailed solution is provided below.

Q: Q18. 415V, 3-phase, 4 wire, system supplies shown star-connected three loads Figure Determine (a)…

A:

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

A: Given the -ve sequence of the 3-phase supply

Q: Q/ A 3-phase, 4-wire system supplies loads which are unequally distributed in the three phases. An…

A: The sequence currents given are             IR1 = 7.89 + j 0.732 A = 7.923883139 ∠5.30048° A…

Q: Consider The power system shown in Figure below. Use a 100-MVA base. Choose 17 kV as the voltage…

A:

Q: R ly Y Z₂ Z3 PC + W₂ IB B Supply voltage = 400V (line-to-line), phase sequence is R-Y-B; Z₁ Z₂ Z3 =…

A: In this question,  We need to determine the total power P?  Reading of the Wattmeter W1  and W2  ?…

Q: 4- in scott connection: 1- Draw the connection diagram. 2- Prove that when the load is balance then…

A: Scott connection: It is a type of transformer or connection which is used to produce two phase power…

Q: Three impedances Z1, Z2 and Z3 are connected in tee. The impedance Z1 is connected in series with…

A: In this question,  We need to determine the current in the each impedance using the super position…

Q: 1. Refer to Figure 1. A Y-connected source supplies 3 balanced 3-phase loads. The source has voltage…

A: As per the client requirements, We are providing the solution of Part G in multipart Question. Delta…

Q: Given the balanced 3 phase system shown below. Determine v, (1) and i,(t) . 10.1 w inat t boonsled…

A: Total impedance in loop aa'n'n Z =j0.1+j1+1+j0.01Z= 1+j1.11Z = 1.49 ∠47.98° ohm I =EaZI…

Q: Three impedances Z1, Z2 and ZL are connected in tee. The impedance Z1 is connected in series with…

A:

Q: no load test, VNL= 220 V P= 310W INL= 6.2 A load test , V = 220 V P;= 3650 W N = 1710 rpm %3D | =…

A:

Q: The power measurement for a balanced delta-connected load is given in Figure 2. The circuit…

A: Electrical devices are used for measuring electrical parameters. Current, voltage and power are…

Q: A 3-phase, 4-wire system supplies an unbalanced load. The positive and the negative sequence…

A:

Q: A- Consider the system shown below. Phase b is open due to conductor break. Calculate the sequence…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: lve and please show an eligible solution: 1. Refer to Figure 1. A Y-connected source supplies 3…

A:

Q: 6. Consider a three-wire Y-A circuit. The voltages of the Y-connected source are V = (208/√3)2 - 30°…

A: Given, A three wire Y-∆ circuit. Y connected sources are, Va=208/3∠-30° VVb=208/3∠-150°…

Q: Activity 5.1 1. On a 120/208-v four wire Y system, two lamps are connected from phase A to neutral,…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: The actual power flow on the transmission line is 1.25 pu and the voltage at both busbars is 1.0 pu.…

A: Here, we have asked to determine the error in the power flow estimated. So, we have given the phase…

Q: Three unequal single-phase loads so connected in delta across the lines of a balanced, 3-phase, 230…

A: Current: It is the time rate of the change of the charges. It flows from high voltage to low voltage…

Q: 1. We can change the sequence of a three- phase system by 2. The time of transient period is 3. In…

A: A three-phase system is a system with three-phase voltages, all three voltages are separated by an…

Q: Q5. In the 3-phase system shown below, phase a is on no load and phases b and c are short circuited…

A:

Q: For a 3-phase, 4-wire system having balanced supply and unbalanced load, the following sequence…

A:

Q: Question 2 a) With the aid of a well labelled diagram prove that for a delta connected system I, =…

A:

Q: Consider the system shown in below fig. phase 'b'is open due to conductor break.Calculate the…

A: In this question , we will find symmetrical components of current...

Q: In Figure 2, arrangement is shown for a voltage supply of 410V. For xyz sequence assume that Vw = V,…

A: The phase sequence is xyz, considering Vxy as reference voltage, Vxy=410∠0° VVyz=410∠-120°…

Q: 2. Determine the: (a) looking back resistance, (b) open-circuit emf at the load, (c) load current,…

A:

Q: A 380 V system as shown below, obtain the line currents and phase voltages 1j 3+2) 2-3j 1-4j 1 Add…

A: Line voltage of the 3 phase balance Delta supply = 380V as shown in the figure.  Assume the…

Q: Subject Test Note: You are attempting question 12 out of 1 For a 220 V, 60 Hz single phase voltage…

A:

Q: The one-line diagram of a three-phase system is shown in Figure 1. By selecting a common based of…

A:

Q: Figure 1 (b) Based on three phase circuit of balanced Y - A connection in Figure 1, calculat (i)…

A:

Q: The figure below shows a single phase power system with the following details. Generator G1: 12 kVA,…

A: The specification of the component connected in the power system as follows. Generator G1: 12kVA,…

Q: A single phase line has a resistance 0.001 Ohm/meter with a total length of 50 km. The apparent…

A: Given data Resistance r =0.001 Ω/m Total length L = 50 km = 50,000 m Apparent power S = 100 KVA…

Q: Circuit Impedance Z = Phase Angle = arc cos R/Z = Calculated Es = Calculated Ec = Calculated ER =…

A: In this question,  Find the voltage acros each element and total voltage.  What is total impedance…

Q: For the following power system network shown in the figure, the specifications of the component are…

A:

Q: In a Y-connected, 3-phase, 4-wire, +phase sequence load, a current of 27.75L-48.5 A is flowing in…

A:

Q: Three impedances Z1, Z2 and Z3 are connected in tee. The impedance Z1 is connected in series with…

A:

Q: 2. Determine the: (a) looking back resistance, (b) open-circuit emf at the load, (c) load current,…

A:

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.