A single phase line has an impedance of 0.4+j2.7 ohms. The line feeds two -single phase loads that are connected in parallel. The first load is absorbing 264.1 kVA at 0.707 power factor lagging. The second load absorbs 44kW at unity power factor. The voltage at the load end of the line is 2200 V. Assuming at the load end of the line as the reference axis. Determine the magnitude of the voltage at the source end of the line.

A single phase line has an impedance of 0.4+j2.7 ohms. The line feeds two -single phase loads that are connected in parallel. The first load is absorbing 264.1 kVA at 0.707 power factor lagging. The second load absorbs 44kW at unity power factor. The voltage at the load end of the line is 2200 V. Assuming at the load end of the line as the reference axis. Determine the magnitude of the voltage at the source end of the line.

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 2.13MCQ

See similar textbooks

Similar questions

The instantaneous power absorbed by the load in a single-phase ac circuit, for a general R LC load under sinusoidal-steady-state excitation. is (a) Nonzero constant (b) Zero (c) Containing double-frequency components
AC Power and Power Factor 1. Two loads are connected in parallel across a 13,200-volt line. Load A draws 200kW at 0.6 p.f. (lagging), load B takes 200kVA at 0.8 p.f. (lagging). Find the reactive, apparent and true power and the line current.
Q2) A 13.2-kV single-phase generator supplies power to a load through a transmission line. The load's impedance is Ztoad 500 236.87° ohm , and the transmission line's impedance is Zine = 60 253.1° ohm. To reduce transmission line losses to 0.0103 of its losses without using the transformers design and use two transformers T1 between the generator and the transmission line and T2 between the transmission line and the load.
A three-phase balanced load of 15A per phase is supplied by a steel wire armoured cable with a c.s.a. of 2.5mm². The voltage drop for this cable is 15mv/A/m and the circuit is 40m long. Calculate the voltage drop in the cable.
6.5% ans ex A so kvA. 2o00/20 V, So He single-phase transformar has impedance drof of8% and resistance drop of 4%. Caleulate. The Requlation of the Thams former at full- Load o8 P.s Legging. also find The Power factor at which Voltage requlation will Be Zero. Sols 0.5 leading. s alculate The % Noltege Requlation af atransformar in w hich the Percantage resistance drof is 1% and Percentage dre is 6% when The Power fador is 0.8 lagging ) > unity aMS 38 % ans 1 % (シ→ 0.8 leading . amS - 2.2%
Explain current divider rule in ac circuits with two parallel impedances Z1 and Z2. Calculate the currents I1 and I2 in phasor form for the circuit given in figure.
Shown are two buses connected via a transmission line. Connected to Bus 1 is a generator(modelled as a voltage source V1), and to Bus 2 is a generator( with Voltage V2) and a load. The line impedance Z = R + jX is not known. Three-phase load is forecasted as 100MW + 60MVar. Generator at Bus 2 is scheduled to deliver 40MW and its excitation is adjusted for the machine to deliver 55 MVar. Voltage at Bus 1 is 241 KV angle 10 deg, while voltage at bus is 230 kV; use V2 as the reference for all angles. 1. What is the current (RMS) in amperes drawn by the load connected to Bus 2? 2. How much real power (in MW) is delivered by the generator connected to Bus 1? 3. What is the total real power loss along the line, in percent of the load? 4. What is the X/R Ratio of the line impedance?
Two single-phase transformers whose phase electrical equivalent circuits are given below are connected in parallel and ZL= 0.8+j0.6 ohm is feeding a worth of load. Idle operating voltage of Transformer 1 is 220 V and Transformer 2 idle operating voltage is 240V. a.) Find the currents flowing from transformers to the load. b.) Find the active powers that transformers transfer to the load.
Driving-point admittance The actual impedance of a load is 30 OHM. The per-unit impedance of the load is 0.5 pu when Base Voltage is 600 V and Base Power is of O 6000 VA O 8000 VA O2000 VA 4000 VA Jump to ncements MacBook Air DD DII F10 F9 F8 000 F7 F6
For the maximum average power transfer in the circuit shown in Figure 2, use the impedance ZLand ZLFind the value of the maximum average power transferred to ? (Can you write the steps in detail in sentences?)
Two single-phase transformers whose phase electrical equivalent circuits are given below are connected in parallel and ZL= 0.8+j0.6ohm is feeding a worth of load. Idle operating voltage of Transformer 1 is 220 V and Transformer 2 idle operating voltage is 240V.a.) Find the currents flowing from transformers to the load.b.) Find the active powers that transformers transfer to the load.
In the 3-phase circuit in the figure, f = 2000 Hz. Find line and phase voltages and currents for the load.(in amplitude and phase).