Two circuits, the impedances which are given by z₁ = 15+j12 and z₂ = 8 - j5 ohms are connected in parallel. If the p.d. across one of the impedance is (250+j0)V. Calculate the total current, branch currents, total power consumed in each branch, overall power factor and power factor of each branch.

Two circuits, the impedances which are given by z₁ = 15+j12 and z₂ = 8 - j5 ohms are connected in parallel. If the p.d. across one of the impedance is (250+j0)V. Calculate the total current, branch currents, total power consumed in each branch, overall power factor and power factor of each branch.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.17P: Consider a load impedance of Z=jwL connected to a voltage and V let the current drawn be I. (a)...

See similar textbooks

Similar questions

Find the following: the power drawn by the 100ohm variable resistor If the variable resistor is set to 200-ohms, instead of 100-ohms, What is the power drawn by the 200-ohms resistor? total current of the system Is the circuit inductive, capacitive, or neither (resistive)? NOTE: Polar form for Voltage & Current. Rectangular form for Impedance
•••PF improved by 100% Convert the given load of the circuit shown into impedance bulk by using power triangle; f= 60hz. Measure the line current IL, power loss PL0, power source Ps, voltage source VS; take note of the old value of PFL; Notations IL= line current; PL0= power loss; PS= power source; VS= voltage source; PFnew= New power factor after correction; PFold= old power factor before correction
Find the total impedance, voltage drop on the 100-ohm resistor, draw the phasor diagram of the voltage and current at R1, total power (apparent) delivered by the current source, draw the phasor diagram of the voltage and current at the source. Also, is the circuit inductive, capacitive, or neither (resistive)? please give the step-by-step solution NOTE: Polar form for Voltage & Current. Rectangular form for Impedance
Suppose the circuit shown represents a residential distribution circuit in which the impedances of the service conductors are negligible and Vg1=Vg2=120 0° V (rms). The three loads in the circuit are L1 (a new refrigerator, a coffee maker, and a microwave oven); L2 (2 incandescent lamps, a humidifier, and a ceiling fan); and L3 (a clothes washer and a clothes dryer). Assume that all of these appliances are in operation at the same time. The service conductors are protected with 20 A circuit breakers. Will the service to this residence beinterrupted? Why or why not?
A network is supplied by a 120 V rms, 60-Hz voltage source. An ammeter and a wattmeter indicate that 12 A rms is drawn from the source and 800 W are consumed by the network. Determine: a. The network power factor b. The network phase angle c. The network impedance d. The equivalent resistance and reactance of the network
A transmission line with impedance of 0.085 + j 0.32 Ω is used to deliver power to a load. The load is inductive and the load voltage is 200∠0° Vrms at 60Hz. If the load operates at 20 kVA with a power factor of 0.75 determine the real and quadrature power losses in both the load and the line and the source voltage phasor.
PLEASE SOLVE THIS QUICKLY The apparent power of the load Z1 in the circuit given in the figure | S1 | = 16 kVA and at 0.8 back power factor, apparent power of Z2 load is | S2 | = 25 kVA and operates at unit power factor. The loads are connected to the source by ZW = 5 + j26 ohm conductive transmission line. Since the supply voltage of the loads is VL = 3.8 kV, find the apparent power seen by the source, the power coefficient and the effective value of the welding voltage.
A 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 average powers delivered to the load and absorbed by the line. The average powers delivered to the load and absorbed by the line are ________ and ____________ , respectively.
I really need help understanding three phase systems. What can you tell me to make it more clear? When can a system be analyzed in its single-phase equivalent? Is it better/easier to have the load in the same configuration as the source? is power factor alwasy the cosing of the angle of the total impedance? Thank you
Understand ac power concepts, their relationships to one another, and how to calculate them in a circuitA load consisting of a 1.35 kΩ resistor in parallel with a 405 mH inductor is connected across the terminals of a sinusoidal voltage source vg, where vg = 90 cos 2500t V. Find 1. a) the average power delivered to the load,2. b) the reactive power for the load,3. c) the apparent power for the load, and4. d) the power factor of the load.
Let a series RLC network be connected to a source voltage V, drawing a current I. (a) In terms of the load impedance Z=ZZ, find expressions for P and Q, from complex power considerations. (b) Express p(t) in terms of P and Q, by choosing i(t)=2Icost. (c) For the case of Z=R+jL+1/jC, interpret the result of part (b) in terms of P,QL, and Qc. In particular, if 2LC=1, when the inductive and capacitive reactances cancel, comment on what happens.
A balanced -connected impedance load with (12+j9) per phase is supplied by a balanced three-phase 60-Hz,208-V source, (a) Calculate the line current, the total real and reactive power absorbed by the load, the load power factor, and the apparent load power, (b) Sketch a phasor diagram showing the line currents, the line-to-line source voltages, and the -load currents. Use Vab as the reference.