Four impedance loads are connected in parallel across a source as shown below. Load 1 absorbs 3 kW and delivers 6 kvars, Load 2 absorbs 6 kW and delivers 3 kvars, Load 3 absorbs 6 kVA at 0.8 leading and Load 4 absorbs 3 kVA at 0.6 lagging. Show that the current supplied to each load is equal to the total current generated. 240 V(rms) Z3 || Z.| Z2
Q: 0.2 N j0.05 N Vg V L, L2 The two loads are described as follows: Load 1 absorbs an average power of…
A: Given circuit Load 1 :Absorbs an average power =5 kwDelivers reactive power 2kVARLoad 2Impedance of…
Q: The load impedance in the power transmission system shown absorbs 6 kW and generates 8 KVAR (i.e.,…
A:
Q: A residential four-wire system supplies power at220 V rms to the following single-phase…
A: (b) For first phase total load are – Since loads are bulb so that total power is real and reactive…
Q: Understand ac power concepts, their relationships to one another, and how to calculate them in a…
A: Given: I= (66.66-88.88j) mA I=111.11∠-53.13 mA
Q: Q2: For the circuit shown below, determine the apparent power delivered by the source, power…
A: First we will calculate node voltage by nodal analysis. power loss =I2×R. power factor= cos(angle…
Q: Three parallel single phase loads are supplied from 240V rms, 60 Hz single phase source. The loads…
A: Given data: VS=240 V RMSf=60 Hzpf1=0.6 lagP1=24 hpR2=6 ΩQ3=24 kVARpf3=0.6 lead
Q: A 15kV, 3 phase circuits feeds a load of 10,000 kW at a lagging load factor and the load current of…
A:
Q: An impedance ZL = (11.5 + j10) ohms is connected in parallel with an impedance ZC = (8 – j20) ohms.…
A: The solution is given below
Q: Perform phasor analysis to the circuit shown to evaluate the total complex power (S) absorbed by the…
A: In this question, we need to determine the across the load 40+30j i. average power (P), ii. reactive…
Q: The two loads shown in the figure below can be described as follows: Load 1 absorbs an average power…
A: ghjn
Q: Using rms values to represent their magnitudes, the voltage across and the current into a load are-…
A: We are authorized to answer one question at a time since you have not mentioned which question you…
Q: (b) Three loads are connected in parallel to a 240Z0° V rms of 50 Hz source. Load 1 absorbs 90 kW…
A: The detailed solution is provided below.
Q: The diagram shown in figure has two three- phase loads that form part of a manufacturing plant. They…
A: Given: Load 1 power=1.5MVAload 2 power=2MWfeeder resistance=0.4+j0.8 Ω/phase
Q: TE is given as Z,=300+2505, Zz=300+200j, Z3=270+3005 three phase circuit given below. Cakulate the…
A: Suppose the current flowing through the load, Z1 is I1, the current flowing through the load, Z2 is…
Q: A load impedance, z = 2 + j80, is connected to a source with line resistance equal to 22. calculate…
A:
Q: Three loads are connected in parallel across the 50020° volt (rms) source shown below. (a) Calculate…
A: In the system, three loads are connect to parallel of each other's Find the power factor of the…
Q: isible power of Z1 = |S1| = 16 kVA and at 0.8 back power factor; Visible power of Z2 = |S2| = 25…
A: Given data: S1=16 kVApf1=0.8S2=25 kVApf2=1ZW=5+j26 ΩVL=3.8 kV
Q: A load impedance having a constant phase angle of −36.87° is connectedacross the terminals a and b…
A: 1- As it is clearly mentioned that average power delivered is maximum so it makes the case of…
Q: 2.2. A single-phase load is supplied with a sinusoidal voltage v(t) = 200 cos (377t) The resulting…
A: Given data: v(t)=200cos377tp(t)=800+1000cos754t-36.87°…
Q: Given the three phase circuit illustrated below. Two balanced loads and the capacitors are connceted…
A: In the power system Calculate total complex power? Calculate line to line voltage Vs Find the power…
Q: The load impedance in the power transmission system shown absorbs 6 kW and generates 8 KVAR (i.e.,…
A:
Q: The load impedance in the circuit shown is shunted by a capacitor having a capacitive reac- tance of…
A: In Network Phasor load current and voltage Real and imaginary power across load , transmission…
Q: A single-phase load is supplied by a single-phase voltage source. If the current flowing from the…
A:
Q: Which of the following descriptions IS NOT correct for loads in power systems? A. The purely…
A: capacitive load will deliver reactive power to the grid. so option C is the wrong one
Q: The in-phase sinusoidal currents in the parallel branches odd a circuit have the following…
A: When impedance is connected in parallel then the voltage across the impedance remains the same but…
Q: An electric load consists of a resistor, a capacitór and an inductor connected in series. The total…
A: Introduction: R-L-C circuit: RLC circuit consists of passive parameters like resistance (R),…
Q: Find the RMS line voltage VL at the source of the circuit. As shown the RMS load phase voltage is…
A:
Q: Three loads connected in parallel across a 1000-V (RMS), 60-Hz single-phase source. Load 1:…
A:
Q: The figure below shows a single-phase load being fed by a voltage source through a transmission…
A: We will find the active power absorbed or delivered by source line and load in the following…
Q: The voltage at the terminals of a load is 250 V(rms). The load isabsorbing an average power of 40 kW…
A: the load complex power S is given by, S=P+jQ=40000-j30000 VAso,P=40000 WQ=-30000 VAR since the…
Q: Consider the following three phase balanced circuit. 21020° Vrms j0.5 2 | 24– j21 N 2102-120° Vrms…
A: Given: The given figure is,
Q: 10,000 kW at a lagging load factor and the load current of 750A. If it is desired to improve the…
A: Given, Total load = 10000 KW Current = 750 A Voltage = 15 Kv
Q: (a) The voltage v across a load and the current i into the positive-polarity terminal are as follows…
A: For signal,x(t) = x0+x1Cos(w1t+ϕ1) +x2 COs(w2t+ϕ2)+....RMS value of x(t) = x02+x122+x222+....where…
Q: 3 Two impedances z1 and z2 when connected separately across a 230V 50Hz supply consumed 100W and 60W…
A: In this question, We need to determine the total power if both impedance are connected in the…
Q: Exersice 1. Single phase load&compensation 0. l1002 |10+j20 2 Two loads z, = 100 2 and Z2 = 10+j20 Q…
A:
Q: For the circuit shown, given that Vab=208Z°, abc sequence, ZLine%3D0.1+j0.2 Q and ZLoad= 12+j4 Q.…
A: Magnitude of voltage VAB across load? 3 phase power system
Q: Consider the following three Phase balanced Circuit 210 20⁰ Vrms jasn 210/120⁰ Vrms 24-321 jost mm…
A: The three-phase delta connected load is shown below: The per-phase equivalent load impedance will…
Q: Find the RMS line voltage VL at the source of the circuit. As shown the RMS load phase voltage is…
A: 3 phase balance load connected to balance system Voltage across load 100V Then find source…
Q: For the circuit show below, solve for the following: a. The complex power delivered to each passive…
A:
Q: 1. For the circuit of Figure 1, a load having an impedance of 28+j162 is fed from a voltage source…
A:
Q: source is connected to two loads impedance Z, and Z2 in parallel. Choose the correct statement(s):…
A: In this question , two paralok impedances given...We have to give statement about power..
Q: Consider Figure B of the phasor diagrams, where |Vol and llol are RMS values observed on a…
A: The solution is given below
Q: Find the complex power supplied by the source and the power factor of the source for the network…
A:
Q: RLine jXLine L |L2 L V(rms) Three loads are supplied through a line in the figure. Find the…
A: Since the first load is operating at a unity power factor, it is a purely resistive element. The…
Q: Q2: The two loads in the circuit shown below can be described as follows: Load 1: Absorbs an average…
A: According to question: The RMS value of load current 'I1' is calculated as The RMS value of load…
Q: 1) The load shown in the Figure consists of a resistance R in parallel with a capacitor of reactance…
A:
Q: 11.55 In a balanced three-phase system, the source has an abc-phase sequence and is connected in…
A:
Q: For the circuit shown below, an impedance having a constant phase angle of -36.87° is connected…
A: The solution is given below
Q: Consider the system as shown in figure Q3, supplies 100 kW at a power factor of 0.85 lagging. The…
A: power at receiving end = sending end power- losses in transmission line. Receiving end voltage=…
Q: The voltage across the parallel loads is VI = 24020° V(rms), with the loads: Load 1 absorbs 12 kVA…
A: According to question: The complex power of load 1 is calculated as…
Trending now
This is a popular solution!
Step by step
Solved in 5 steps with 20 images
- A three-phase line, which has an impedance of (2+j4) per phase, feeds two balanced three-phase loads that are connected in parallel. One of the loads is Y-connected with an impedance of (30+j40) per phase, and the other is -connected with an impedance of (60j45) per phase. The line is energized at the sending end from a 60-Hz, three-phase, balanced voltage source of 1203V (rms. line-to-line). Determine (a) the current, real power. and reactive power delivered by the sending-end source: (b) the line-to-line voltage at the load: (C) the current per phase in each load: and (d) the total three-phase real and reactive powers absorbed by each load and by the line. Check that the total three- phase complex power delivered by the source equals the total three-phase power absorbed by the line and loads.Under balanced operating conditions, consider the 3-phase complex power delivered by the 3-phase source to the 3-phase load. Match the following expressions, those on the left to those on the right. 0) Real power, Py (ii) Reactive power, Qu (ii) Total apparent power Sy (iv) Complex power, Sy (a) (V3 VLL. IL)VA (b) (V3 Vu sng) var (e) (V3 VLL. IL cos ø) W (d) Py +Qy Note that VLL is the rms line-to-line voltage, IL is the ms line current, and o is the power-factor angle.Given: 1. 2 wye-connected loads per phase to a 3 phase power source 2. first load consists of a 55ohm resistance and a 0.05H inductance per phase 3. second load consumes 1kW and power factor of 0.7 lagging per phase 4. RMS of voltage across the loads are 220V, frequency 120Hz per phase 5. single phase equivalent is shown in the figure: Question: What are the RMS line current at load 1 and 2 respectively?
- A Y-connected balanced three-phase source is feeding a balanced three-phase load. The voltage and current of the source coil are: Calculate the following: The rms phase voltage. The rms line-to-line voltage. The rms current in the source. The rms current in the transmission line. The frequency of the supply. The power factor at the source side, state leading or lagging. The three-phase real power delivered to the load. The three-phase reactive power delivered to the load. If the load is connected in delta configuration, calculate the load impedance.1. a) Find the rms magnitude and the phase angle of ICA in the circuit shown. 2. b) What percent of the average power delivered by the three-phase source is dissipated in the three-phase load?A 15kV, 3 phase circuits feeds a load of 10,000 kW at a lagging load factor and the load current of 750A. If it is desired to improve the power factor, determine the following: The uncorrected power factor;Reactive load;The new corrected power factor after installing a shunt capacitor unit with a rating of 9000 kVAR. (a) 0.813 lagging (b) 14723 kVAR (c) 0.9 lagging (a) 0.613 lagging (b) 15723 kVAR (c) 0.75 lagging (a) 0.713 lagging (b) 13723 kVAR (c) 0.85 lagging (a) 0.513 lagging (b) 16723 kVAR (c) 0.80 lagging
- 1. Solve for the equivalent impedance and admittance seen at the source. Solve for is(t). 2. A load Z draws 12 kVA at a power factor of 0.856 lagging from a 120-Vrms sinusoidal source. Calculate: (a) the average and reactive powers delivered to the load, and (b) the peak current.A 3-phase Y-connected load draws power from a 3-phase Y-connected source. The source voltage, ?=440∠0º?_rms and the load impedance, Z_y=(30+j15) Ω. The line impedance, Z_line= (1+j1)Ω and the system operates at 60 Hz. a) Draw the single-phase equivalent circuit and label all given quantities numerically. b) Calculatethe rms line (phase) current phasor in each phase. c) Calculate the total active or real power supplied by the source. d) Calculate the total active or real power consumed by the load. e) Calculate the total line loss i.e. the total activepower lost due to line. f) Determine the power efficiency of the system.In the given circuit, the amplitude of the input voltage is 180 Volts RMS and its phase is 45 degrees.The power values that the loads receive/give are given below.What is the phase of the current phasor I0?Load 1 = 1.8 kW and capacitive 1.2 kVAR8 kW with load 2 = 0.5 back power factorLoad 3 = 3 kVA with 0.9 forward power factor
- Two balanced loads are connected to a 240-kV rms 50-Hz line. Load 1 draws 30 kW at a power factor of 0.6 lagging, while load 2 draws 45 kVAr at a power factor of 0.8 lagging. Assuming the RYB sequence, determine: (a) the complex, real, and reactive powers absorbed by the combined load, (b) the line currents, and (c) the kVAr rating of the three capacitors ∆-connected in parallel with the load that will raise the power factor to 0.9 lagging and the capacitance of each capacitor. Verify the results by creating a MATLAB Simulink model and program. Obtain the plots for the currents and voltagesA load impedance, Zo = 10 + j 3 ohm, is connected to a source with line resistance equal to 3 ohm, as shown in the figure. Determine the apparent power supplied by the generator. The apparent power supplied by the generator is _____ VA.Three loads are connected in parallel across a 300 V (rms) line. Load 1 absorbs 3 kW atunity power factor; Load 2 absorbs 5 kVA at 0.8 leading; Load 3 absorbs 5 kW and delivers 6kvars. The Three loads are fed from a line having a series impedance 0. 2+j0.05 Ω as shownbelow.a) Calculate the rms value of the voltage ( ?? ) at the sending end of the line.b) Calculate the average and reactive powers associated with the line impedance.c) Calculate the average and reactive powers at the sending end of the line.d) Calculate the efficiency (?) of the line if the efficiency is defined as? = (????? / ???????? ???) × 100