Circuit II LAPPLI CATI ONOF POLAR$ RECTANGULAR FORMS IN 3Ø CKT.BALANCE,3Ø(THREE-PHASE) LOAD DELTA(ACONNECTED)A.IgAZAB= 10GO120 V, 30IBIBC12OV,30IcZBC = 10L 60°ASSUME A-B- C, PHASE SEQUENCE OR POSITIVEPHASE SEQUENCE SOLVE FOR THE FF:toPHASE CURRENTS : IAB, IBC ANDICA2. LINE CURRENTSS IA, IR ANDIC

APPLI CATI ONOF POLAR$ RECTANGULAR FORMS IN 3Ø CKT. BALANCE,3Ø(THREE-PHASE) LOAD DELTA (ACONNECTED) A. I gA そAB= 10cへ 120V, 30 IB IBC 1ZOV,30 Ic ZBC = 10L G0° ASSUME A-B-C, PHASE SEQUENCE OR POSITIVE PHASE SEQUENCE SOLVE FOR THE FF: to PHASE CURRENTS : IAB, IBC ANDICA 2. LINE CURRENTSS IA, IR ANDIC

APPLI CATI ONOF POLAR$ RECTANGULAR FORMS IN 3Ø CKT. BALANCE,3Ø(THREE-PHASE) LOAD DELTA (ACONNECTED) A. I gA そAB= 10cへ 120V, 30 IB IBC 1ZOV,30 Ic ZBC = 10L G0° ASSUME A-B-C, PHASE SEQUENCE OR POSITIVE PHASE SEQUENCE SOLVE FOR THE FF: to PHASE CURRENTS : IAB, IBC ANDICA 2. LINE CURRENTSS IA, IR ANDIC

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 2.45P: Two balanced Y-connected loads, one drawing 10 kW at 0.8 power factor lagging and the other IS kW at...

See similar textbooks

Similar questions

Van = 225&angle;-320°, Vbn = 225&angle;-200°, Vcn = 225&angle;-440°" (THIS PROBLEM IS MULTIPLE CHOICE PLEASEE CHOOSE A LETTER BELOW AND PROVIDE YOUR CLEAR SOLUTION!) A POSITIVE PHASE SEQUENCE B NEGATIVE PHASE SEQUENCE
Consider a 10 kVA, 200/400 V, 50 HZ: single-phase tranformer has the folloving test results:0.C. test: 200 V, 0.6A, 63 W (L.V.side)S.C. test : 20 V, 25A, 85 W (H.V. side)Deternine:i- The eficiengy at 75 % offiull-load at 0.9 leading power factor.ii -The secondary terminal voltage on fill-load at tunity power facton
A balanced three-phase source with grounded neutral has line-to-neutral voltages of 132.7906 volts with an-bn-cn sequence. This source has an internal series impedance of 0.1+j1.5 ohms per phase. It supplies power to an unbalanced three-phase delta load with impedances: Zab = 80+j60; Zbc = 60-j25; Zca = 45+j60 ohms. If line a is open creating a series fault at line load-side, what is the magnitude of the line current in line b in amperes?
15. A symmetrical 440-V, 3-phase system supplies a star-connected load with the following branch impedances: Zr=100 Ω, Zy=j5Ω, Zb=-j5Ω. Calculate the voltage drop across each branch and the potential of the neutral point to earth. The phase sequence is RYB. Draw the vector diagram. [18800∠-30, 84152∠-315°, 8420-∠-28.5°, 8545∠150◦] Answer
A balanced three-phase source with grounded neutral has line-to-neutral voltages of 132.7906 volts with an-bn-cn sequence. This source has an internal series impedance of 0.1+j1.5 ohms per phase. It supplies power to an unbalanced three-phase delta load with impedances: Zab = 80+j60; Zbc = 60-j25; Zca = 45+j60 ohms. If there is a single-line-to-ground fault at line a load-side, what is the magnitude of the fault current in amperes?
A delta-connected load with impedance Zab= 10cis30, Zbc = 25cis0 und Zca= 20cis-30 ohm is connected to a three phase, three-wire 250-volt source with phase sequence ab-bc-ca. Find the line currents and the total power.
A three-phase source has a phase sequence of EAB - EBC - ECA and delivers the following delta load currents: Iab = 12<0 A, Ibc = 12<-60 A, Ica = 16<60 A. The line voltage EAB is 230<0 V. If one wattmeter is connected with its current coil in line A and its potential coil across lines A and B, and a second wattmeter is connected with its current coil in line C and its potential coil across lines C and B. what will each wattmeter register, and what is the total power?
A balanced three-phase source with grounded neutral has line-to-neutral voltages of 120 volts with an-bn-cn sequence. This source has an internal series impedance of 0.15+j2.0 ohms per phase. It supplies power to an unbalanced three-phase delta load with impedances: Zab = 30+j40; Zbc = 50-j40; Zca = 65+j25 ohms. If there is a double-line-to-ground fault at lines b and c load-side, what is the magnitude of the fault current injected to the ground in amperes?
A 3-phase motor is rated at 100VA 0.9pf lag when operated with 100V 60Hz. The motor must be operated within 95-105V only. There is also an existing 100V 60Hz 3-phase generator set to be tested and verify if it can power the motor. There is a 3-phase connector with 15A rating per line that can be used. Analyzing first the motor and the generator respectively, what is the total 3-phase real power and 3-phase reactive power that is expected to be consumed by the motor when operated with 100V?
The phase voltages across a certain load are given as: Va = 176 – j132 volts Vb = -128 - j96 volts Vc = -160 + j100 volts Va1 = 163.24-j35.10 / 166.97L-12.135 Va2 = 50.1-j53.9 / 73.59L-47.09 Va0 = -37.34-j42.67 / 56.70L-131.19 Compute for positive, negative, and zero sequence components of voltage.
*2 2-If in an ach phase sequence, V,, = 1002 — 20 V then V, is: a)1002-1400vV O b) 10021000V O ©) 10024500V O d)100£100v O wsthas Sl i @
A 400V three-phase, four wire dystem has the following loads connected: Phase 1: Load impedance Z1= 4- + j15 Ohms Phase 2: Load impedance Z2 = 60 Ohms Phase 3: Load impedance Z3 = 15 - j20 Ohms Draw the circuit diagram and determine: The line and phase voltages for all phases (Including phase angles)