Q.50 Suppose IA, IB and I are a set of unbalanced current phasors in a three-phase system.The phase-B zero sequence current Io = 0.120° p.u. If phase-A current IA = 1.120°p.u. and phase-C current I = (1/120° + 0.1) p.u., then I in p.u. is(a) 1.12240° -0.120°(b) 1/240° 0.120°(c) 12-120° + 0.120°(d) 1.12-120° + 0.120°

Suppose IA, I and I are a set of unbalanced current phasors in a three-phase system. The phase-B zero sequence current Io = 0.120° p.u. If phase-A current I₁ = 1.120° p.u. and phase-C current I = (1/120° + 0.1) p.u., then Ig in p.u. is (a) 1.12240° -0.120° (b) 12240° -0.120° (c) 12-120° +0.120° (d) 1.12-120° + 0.120°

Suppose IA, I and I are a set of unbalanced current phasors in a three-phase system. The phase-B zero sequence current Io = 0.120° p.u. If phase-A current I₁ = 1.120° p.u. and phase-C current I = (1/120° + 0.1) p.u., then Ig in p.u. is (a) 1.12240° -0.120° (b) 12240° -0.120° (c) 12-120° +0.120° (d) 1.12-120° + 0.120°

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 2.7P: Let a 100V sinusoidal source be connected to a series combination of a 3 resistor, an 8 inductor,...

See similar textbooks

Similar questions

Let a 100V sinusoidal source be connected to a series combination of a 3 resistor, an 8 inductor, and a 4 capacitor. (a) Draw the circuit diagram. (b) Compute the series impedance. (C) Determine the current I delivered by the source. Is the current lagging or leading the source voltage? What is the power factor of this circuit?
For the phasor diagram in figure 6 express the voltages in sinusoids for a period of 5ms. Im Re )e,=45° e,=20 Vz=10 V2=8 Figure 7 a. Va(t)=. b. V2(t)=. c. What is the rms voltage of V1 = d. What is the rms voltage of V2=_ e. What is the frequency in Hz = f. What is the angular frequency =. In terms of lagging and leading what is the exact phase relationship between V, (t) and V2(t) g.
2.14 The current waveforms of la capocitov are avesage peak cursend *atings of 1, =500 A of shown in Fiquse Determine square (rms), and capacitor. Assume, The root mean half sine -wave t = loo us -300 AS t3 Soo Ns f, -250HZ T2 200
SINUSADAL ALTER UATING SIDES 5CM 471t is APPUED TO A H. 5cm IS WOUND HTH 300 TU IN 3.) A SINUSODAL ALTERUATING SINUSADAL ALTERNATING VOLTAGE HAC N C.m.s VALUE OF 200 V FREQUENCY OF so Hz. IT THE ZERO AXIS IN A CROSSES POSITIVE DIRECTION KHEN t=0. DETERMINE li) THE TIME WHEN VOLTAGE FIRST REACHES THF STANTANEOUS VUE OF 2wY AND (i) THE TME HEN KOUAGE LETER PASSING THROUGH Ts MAXIMUM POSITIVE YALUE REACHES THE VALUE 11141.4 V. (0.0025 SELOND (ii) 1/300 SECOND) OF 200 SN 47 E iS APPUED TO A HW AN ALTEFNSTNG VOLTAGE SEPIES VITH A KRISTANE OF 40 2.IF THE
detalls by Q-2: Explain the phase difference between voltage and current for a sinusoidal source voltage V(t)= Vo sin(wt) when it is applied in a circuit to a) On a resistor, b) on a solenoid, c) on a capacitor. Draw a separate figure for each case for voltage and current.
Two alternating voltages are represented by vị = 50 sin wt volts and v2 = 100 sin(wt - -). Draw the phasor diagram and find by calculations a sinusoidal expression to represent vi and v,. www The instantane ous values of two alternating currents are given by i = 20 sin wt and i, = 10 sin (wt + ) A. Find the sinusoidal expression for (i1 + i2) by drawing phasors and by calculations.
Prob. I and Vc For the following RMS phasor circuit, a coworker has determined values for 50 Ohms 50 Ohms i,- 225 2253.13° = 190.92 + 254.56 VRMS R1 + R2 Vc = 237.17/26.565° = 212.13+ 106.07 VRMS 100 2 -3Z98.13° =-0.4243 + J2.970 ARMS C -j60 Ohms For this problem provide at least 3 digits of precision for the answers. The results for the following calculations are to be answered in - a) Find the current I b) Determine the real (P) and reactive(Q) power DELIVERED by the source c) Determine the real (P) and reactive (Q) power ABSORBED by each impedance ( resistors R1 and R2, inductor and capacitor). The values for P and Q can be positive or negative. Remember S =P+jQ, so do not include the j with your answer for Q. Each of these answers will require two parts. For the phasor a magnitude and angle will be needed. For the powers, The real power P and the reactive power Q are required.
If, in one (360 degrees), all of the instantaneous power falls under positive loops (no negativeloops), the load must be:a. A resistorb. An inductor or capacitorExplain:
The below figure shows the waveform of the voltage and current in a purcly inductive AC circuit. Voltage Current Using the voltage phasor as the reference, the current phasor O Is in phase with the voltage Lags by 90° O Leads by 90° Lags and then leads by 160°
Four Circuit elements are Connected in a Sinusoidal allemating voltye series across given Sy e= ll0sin Cwt + 30). The instantaneous voltage across three q by V, = 30sinWE, U= 605in(wt t60°) and 30 sinlwt -20°) the elements are given V= Determine the enpression for the ferten th ulags in the form Vy = ASinlwt t B). G What is the uce phasov opprach. Y. Mis value of V4? diagramas. Donot use Complese nember
C. Draw a general sine wave V vs t and I vs t plot for a purely resistive and a purely inductive circuit and show leading lagging parameters and clearly mark the phase difference.
In capacitive AC circuit voltage is leading current O a. True O b. False