A 69-kV, three-phase short transmission line is 16 km long. The line has a per phase series impedance of 0.125 +50.4375 Ω per km. Determine the sending end voltage, voltage regulation, the sending end power, and the transmission efficiency when the line delivers (a) 70 MVA, 0.8 lagging power factor at 64 kV. (b) 120 MW, unity power factor at 64 kV.
A 69-kV, three phase short transmission line is 16km long. The line has a per phase series impedance of 0.125 + j0.4375 ohms per km. Determine the sending end voltage, voltage regulation, the sending end power, and the transmission efficiency when the line delivers:
(a) 70 MVA, 0.8 lagging power factor at 64 kV.
(b) 120 MW, unity power factor at 64kV.
A 69-kV, three-phase short transmission line is 16 km long. The line has a per phase series impedance of 0.125 +50.4375 Ω per km. Determine the sending end voltage, voltage regulation, the sending end power, and the transmission efficiency when the line delivers (a) 70 MVA, 0.8 lagging power factor at 64 kV. (b) 120 MW, unity power factor at 64 kV.
Expert Answer
Want to see the step-by-step answer?
Related Electrical Engineering Q&A
Q: Q1: a) Discuss the effect of earth on the capacitance of a line : b) Derive in expression for the ca...
A: (a) The earth can be considered as a conducting infinite equipotential plane. The electric flux line...
Q: In the following circuit, use either differential equation approach or the step by step method to fi...
A: Figure 1 shows the modified circuit when t < 0.
Q: Figure 3.60 For Prob. 3.11. 3.12 Using nodal analysis, determine V, in the circuit in Fig. 3.61. 40 ...
A: Nodal analysis depends primarity on the application of Kirchoff's Voltage Law (KVL). The circuit men...
Q: .il Verizon LTE 7:41 PM ร์ 100% Done 1- In the following circuit find ve) andi,(C) given; y(1) = 240...
A: From the given circuit, the switch is connected to v1(t) at t < 0. As the supply v1(t) is connect...
Q: A single phase transmission line is delivering 500 kVA load at 2 kV. Its resistance is 0·2 Ω and ind...
A: Given,The inductive reactance is,
Q: Q3. By using the method of images, prove that the capacitance between conductor and earth, taking in...
A: From the diagram shown below, we can say that:
Q: 3. Find the current in the Silicon diode in the following circuit. Diode's I-V curve is given below....
A: For the below circuit and Diode’s, I-V curve, to calculate the current in the Silicon diode: -
Q: he follo miny Cu nd R omptete ミ? 2 2. /2 レ
A: Click to see the answer
Q: a the following circuit find i,o 1-0 t= る(t) 1н =0 ЗА
A: We first find the initial and final values. Let us say that the voltage across the capacitor is v(t)...
Q: Use linearity and the assumption that Vo = 1 V to find the actual value of Vo in the following circu...
A: A linear circuit is one whose output is linearly related or in other words which is directly proport...
Q: 3.45 Find current i in the circuit of Fig. 3.91. ML 492 8 92 4 A 2Ω 6Ω ts 30 V (+ ΙΩ Figure 3.91
A: There is a current source in the given circuit. So , we are applying nodal analysis.
Q: Sketch the derived result for Vout(t). Clearly labeling your initial voltages and time constants for...
A: From the given figure, apply KVL rule,Take Laplace Transform of above equation,Take as common from ...
Q: Convert the following numbers to scientific notation.Following these Question and answer.29) 5000 KΩ...
A: We need to convert the numbers given below into scientific notations.
Q: Three conductors of a 3-phase overhead line are arranged in a horizontal plane 6 m apart. The diamet...
A: The capacitance of each conductor to neutral per 100 km of the line should be calculated as: -
Q: e foll a Onny uruut hind 34%
A: Part (a): Refer to Figure as shown in the part (a) of the given question.According to the Maximum po...
Q: Examiner lecturer: Hawraa Qasim Date: 16/4/2018 unleridtions&Measurements Division: Electrical Engin...
A: (a) Dynamometer:This is type of measurement device that is used to measure voltage, current, and pow...
Q: In the following circuit, use two different methods (Nodal Analysis, Mesh Analysis, or using Theveni...
A: Let us find the Nortons's Current (Isc) :
Q: I am having trouble with a Differential Amplifier problem that I attached a photo of. I must "Design...
A: For a single input single output BJT amplifier for the gain of +150 we have to make some changes in ...
Q: 9 Find v,1) in the following circuit. You may employ any method you wish. + Vo (t) 4
A: We need to calculate v0(t), in the following circuit: -
Q: In the following circuit, use either differential equation approach or the step by step method to fi...
A: STEP BY STEP METHOD:From the given circuit, the switch opens at t =0. That is, switch is in closed c...
Q: When you are converting an instantaneous current to a phasor, how does the phase angle being positiv...
A: The overall solution depends on the phase angle or epoch (initial phase) of the instantaneous form o...
Q: 4. Find the current I assuming ideal diod es 1.2k2 10V (+ 15%4 12V+ 3V
A: The given is redrawn as shown in Figure 1.
Q: The circuit in the attached image has voltage gain |VL|/|Vi|=170 What is the voltage gain |VL|/|Vi| ...
A: The voltage gain for given circuit needs to be determined.
Q: The initial voltage across a 7.5F capacitor is 4.5V after 0.5 seconds. If the current is described a...
A: Initial voltage Vo=4.5 VC=7.5FAt 0.5s current is given as:
Q: How would I sketch the input-output relationship of op-amp comparators with hysteresis?
A: Consider an inverting Op-Amp comparator circuit as shown in Figure 1.
Q: Show that the system shown in the figure below oscillates at a frequency of 1 rad/sec.
A: This is a unity negative feedback system. For this system to oscillate at some frequency, we need tw...
Q: A 200 km, 3-phase transmission line has its conductors placed at the corners of an equilateral trian...
A: (i) The line to neutral capacitanceGiven values: -The radius of each conductor is given as r = 1 cm...
Q: How was the value of the capacitor derived?
A: Click to see the answer
Q: 11- Find i (t) in the following circuit. You may employ any method you wish t = 0 22 22 24 V (t)
A: First calculate the current just after the switch is closed.Capacitor behaves as a short circuit jus...
Q: A short 3-φ transmission line with an impedance of (5 + j 20) Ω per phase has sending end and receiv...
A: The resistance and reactance of each conductors are,
Q: The three conductors of a 3-φ line are arranged at the corners of a right angled isosceles triangle....
A: The conductors are at the corners of right-angled isosceles triangle. So, the distance between the c...
Q: In the following circuit, use either differential equation approach or the shortcut method to find i...
A: STEP BY STEP METHOD:From the circuit, write the expression for io(t) as follows:
Q: une nodal amolipis to Soue the euit omol vo bupe loop ondly sij ho sohe hme ardu and iud Vo S Vo Sl ...
A: This problem will be solved by the application of Kirchoff's Voltage Law and current law. According ...
Q: Feedback Control of Dynamic Systems (7th edition) - Problem 7.19
A: Click to see the answer
Q: Find the charge q(t) flowing through an device if the current is:(c) i(t)= 20 cos(10t + π/6)10^-6A, ...
A: Charge is defined as integral of current over a certain interval of time. The mathematical expressio...
Q: A single phase overhead transmission line delivers 4000 kW at 11 kV at 0·8 p.f. lagging. If resistan...
A: The equivalent circuit diagram is as follows:
Q: Electrical Engineering Question
A: Part (A):Given data,
Q: Please see the attached photo to view my question. Thank you.
A: Refer to the given Figure, the initial voltage v(0) is zero for t < 0.
Q: The switch in the circuit seen in fig. p7.52 has been in position a for a long time. At t=0, the swi...
A: Figure 1 shows the modified circuit when t < 0.
Q: .il Verizon LTE 7:42 PM 100%- Done 2- In the following circuit find ve) and i(t) given; y(1)-240 V ,...
A: We have been given with below values: -v1(t) = 240V, v2(t) = 120V, L=1H, C = (1/16) F and R=2 Ohm fo...
Q: At t=1ms is the i=12(a estimated number)/1=12A or is it i=30/2=15A.
A: From the definition of current i(t), it can be expressed as the time derivative of charge q(t). The ...
Q: 3.31 Find the node voltages for the circuit in Fig. 3.80. C, ML 1S2 4lo 2v V1 V2 11o 4 92 4Ω 1S2 ÷) ...
A: Nodal analysis primarily depends on the application of Kirchoff\'s Current Law (KCL) to various esse...
Q: CompressionLet’s take a look at compression.Take the file Fig 05-15 which can be found on the author...
A: 1. Right click on file and go to properties to get the type of file format.Answer: a) Chapter 5.doc...
Q: I got parts a & b right. I just need a clarification how the author got the answer to part c 72....
A: From Part (a), the lower cutoff frequency (fL) is 34.412 Hz.
Q: A 3-phase line 3 km long delivers 3000 kW at a p.f. 0·8 lagging to a load. The resistance and reacta...
A: Click to see the answer
Q: 1. FIGURE 52 shows the one-line diagram of a simple three-bus power system with generation at bus I....
A: Convert the line impedances into admittances, using Y=1/Z
Q: Ql: a) A set of reading obtained in an experiment is 49.7. 50.1, 50.2, 49.6, 49.7 determined: 1- Ari...
A: As this question has many sub parts, so I will be answering the first five sub-parts of Q1. a. In ...
Q: Find i(t) and v(t) for t >0 in the circuit in the figure attached.
A: Write the general expression for unit step function,
Q: KCL Iav 2N 0sv Soue the curcut gnd
A: The circuit diagram is shown on the board:
Q: Find the steady state response for i0(t) in the circuit in fig 9.29 if Vs=100sin50t mV
A: Steady state response for the current needs to be calculated using the below given data and figure: