Note: Answer Four Questions only Q1: A three-phase balanced source voltages, operating with a 380 -V line voltage as shown in Fig. 1. Calculate: (1) the phase voltage and power factor (2) the currents 11, 12, 13, and In (3) the total power absorbed by the e 202 -J15Q Time: 3 Hours 252 -AQ ASQ 492

Note: Answer Four Questions only Q1: A three-phase balanced source voltages, operating with a 380 -V line voltage as shown in Fig. 1. Calculate: (1) the phase voltage and power factor (2) the currents 11, 12, 13, and In (3) the total power absorbed by the e 202 -J15Q Time: 3 Hours 252 -AQ ASQ 492

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 2.31P: Consider two interconnected voltage sources connected by a line of impedance Z=jX, as shown in...

See similar textbooks

Similar questions

A man has a body resistance of 600 . How much current flows through his ungrounded body: (a) when he touches the terminals of a 12-V autobattery? (b) when he sticks his finger into a 120-V light socket?
Question oneA balanced star connected load comprises of 20 ohm resistance and 0.07 Henry inductance in each branch. If the load supplied with 415V at 50Hz, calculatea) the line currentb) the power factorc) the total power supplied to the load PLEASE FOLLOW THIS APPROACH TO SOLVE THE QUESTION. THANK YOUStep OneDeduce the inductive reactance.STEP TwoWrite down a rectangular expression for the impedance per branch.STEP ThreeConvert the rectangular expression into polar expression.STEP FourBecause impedance will be involved in the analysis deduce the phase voltage.STEP FiveSolve for the phase current and hence the line current.STEPVSixUse the phase angle of the current to deduce the power factor. STEP SevenFind the apparent power.
2.1 Two power stations, A and B, are synchronized at 66 kV. They are inter-connected by a transmission line with an inductive reactance of 6.7-Ω and resistance of 3.5-Ω per phase. The voltage of power station A is advanced with an angle of 10.5 degrees with respect to the voltage of power station B. The loading of power station B has a real power of 200 MW. The respective loads of the two power stations are as follows: Power station A: 165 MVA at a power factor of 0.819 lagging. Power station B: The reactive power consumed by the load is 155 Mvar. *Round off to two decimal places in every question. Determine the following: 12.The interconnector current (kA)and it's angle 13.The reactive power received by power station A (MVar). 14.The active power received by power station B (MW).
2.1 Two power stations, A and B, are synchronized at 66 kV. They are inter-connected by a transmission line with an inductive reactance of 6.7-Ω and resistance of 3.5-Ω per phase. The voltage of power station A is advanced with an angle of 10.5 degrees with respect to the voltage of power station B. The loading of power station B has a real power of 200 MW. The respective loads of the two power stations are as follows: Power station A: 165 MVA at a power factor of 0.819 lagging. Power station B: The reactive power consumed by the load is 155 Mvar. *Round off to two decimal places to every question 15.The active power loss within the interconnector (MW). 16.The reactive power loss within the interconnector (MVar). 17.The final loading of power station A (MVA) and it's angle
2.1 Two power stations, A and B, are synchronized at 66 kV. They are inter-connected by a transmission line with an inductive reactance of 6.7-Ω and resistance of 3.5-Ω per phase. The voltage of power station A is advanced with an angle of 10.5 degrees with respect to the voltage of power station B. The loading of power station B has a real power of 200 MW. The respective loads of the two power stations are as follows:Power station A: 165 MVA at a power factor of 0.819 lagging.Power station B: The reactive power consumed by the load is 155 Mvar. *Round off to two decimal places to every question 18.The final loading of power station B (MVA) and it's angle 19.The reactive power received by power station A if the reactive power loading from power station A is to be reduced by 30% (MVar). 20.The required advancement angle at power station A to achieve the 30% reduction in reactive power loading of power station A (degrees).
Fill in the table for a correctly wired duplex outlet (U.S. National Electric Code standards for voltage PARAMETER EQUATION and frequency). Note the used of double- subscript notation. You can assume a 0° phase reference for Vba(t). Vba(t) Vea(t) Vbe(t) Vba (Peak Phasor) Vea (Peak Phasor) Vbc (Peak Phasor) Vba (RMS Phasor) Vea (RMS Phasor) Vbc (RMS Phasor) A C
(b) An inductive load consisting of resistor, R and inductor, L in series feeding from a 240430° Vrms, 50 Hz supply consumes 6 kW at lagging power factor of 0.88. (i) Determine the current through the load. (ii) Find R and L. (iii) Draw the phasor diagram of supply voltage and current.
Referring to the Figure 2, compute the following values, given that the operating frequency is 60Hz and the voltage is 120V: (a) The inductive reactance (b) Source current (c) Apparent power, active power and reactive power Sketch and illustrate the power triangle with proper labelling, units and values. E 160 150 mH Figure 2
Two impedances Z₁ and Z2 are connected in series to a voltage source with voltage Vs volts. Let V₁ be the voltage across Z₁ and V₂ be the voltage across Z2. Then, the total voltage Vs is divided between V₁ and V2 in proportion to impedance values Z₁ and Z2. O a. True O b. False
Task 3 A three phase, four wire star connected load consisting of: ZR: a resistor of 9500 in series with a 3H inductor ZB: a resistor of 1950 ZY: a resistor of 1950 in series with a 4µF capacitor Using the equipment available in the power lab (Room T017), connect the given load to a three-phase supply available in the lab and: 3.1. Determine the current of each line and the neutral current and measure the total power supplied by the source. 3.2. Analytically, calculate all currents and the total power and compare with those obtained in measurements. 3.3. Device a method and measure the waveform of the neutral current. Discuss the obtained waveform and the reason for any distortion in the waveform 3.4. Validate your calculations using computer simulation
Consider a voltage source, vs(t)=1202-√cos(377t)V, connected across two loads in series (vs=v1+v2). If the load voltmeter RMS readings measure 50V and 88.5V, respectively, with the voltage of the first load leading that of the second (by an angle between 0 and 180 degrees), determine the phases for v1 and v2. If you also know that load 1 has PF 0.9 lagging, compute the PF of load 2. please answer in typing format
V:.. H.W. .mp4 www.DANDICAMCO H.W. 1 Poly-phase Systems A three phase, four-wire, 208 volt, CBA system has a wyeconnected load with Z, = 60°, 2, = 6/30° and Ze = 5/45°. Obtain the three line currents and the neutral current(in a polar form) after finding O2 and 03. A' 120/03 1002 B- 120/150