1. Explain how transmission and distribution lines, sustation equipment, and generators are protected
Q: 6. Find the current lo in the network below using Thevenin's Theorem. 10 420°A 1220 v ji0 le ji0 ll ...
A: In this question, Find the current Io using the Thevenin theorems Here one depended energy source a...
Q: 27. Determine the static or de resistance of the commercially
A: From data given forward current 4mA from figure the voltage VD=0.7v
Q: 1. Design a capacitor set-up that can give at least 1 Farad. You can focus on the design by finding ...
A: Note: We are authorized to answer one question at a time since you have not mentioned which question...
Q: To improve a lagging power factor, a capacitor is connected in parallel with the load. True False
A:
Q: 1K2 ww 10.21: For the following electric circuit, find Z and Y parameters? Also, compute input and r...
A:
Q: and power. 20. Referring to Fig. 15-13a, transform the upper delta into an equivalent atar a a deter...
A:
Q: Figure PS.9 260 18 Q 100 36 2 (a) 1 kn 250 N 5002 2 k0 750 2 1.5 kn (c)
A: Note: as per our company guidelines we are supposed to answer first 3 sub parts.kindly repost other ...
Q: If the input voltage to a voltage tripler has an ms value of 111.96V, the average output voltage (in...
A: Voltage tripler gives output 3 times of peak voltage of input. Vo = 3 Vm(in) Where...
Q: A 10 kW, 250 V Shunt motor has an armature resistance of 0.5 ohm and a field resistance of 200 ohm. ...
A:
Q: Question 1 For the unity feedback system as shown in Figure Q1, R(s) C(s) G(s) Figure Q1 G(s) = K s(...
A:
Q: 12.28 Detormine H(jw) from the magnitude oharacteristio shown in Fig. P12,28. 20 dB -20 dB/deo -20 d...
A:
Q: Please explain about your experience of frequency Respnse of OPAMP, And what is the Av value of this...
A: Op-Amp- It is a device which has two input and one output pins and terminal. It is an integrated cir...
Q: Equation Q4 shows a sinusoidal message signal, v(t). v(t) = 2 cos(10000nt) + 5 cos(2 20000nt) ... Eq...
A: "According to the Company's policy we will Given the message signal: v(t)=2cos(10000πt)+5cos(2×2000...
Q: 3. Determine the kind of damping and the value of q for the arrow refers to number #1 in the figure ...
A: The above response is equivalent to mechanical response of spring mass system stretched from a dista...
Q: Solve the votages Vgand V2 Using superpositiom theorem Vz 352 いし
A:
Q: 4. When switch S: is open and switch Si is closed in Fig. 15-9, the eurrents are I - (8 + j5) and I:...
A: Switches are used to make or break the circuit during the operation. Types of switches SPST( Sin...
Q: QUESTION 30 A certain power supply filter produces an output with a ripple of 42.59 mV peak to peak ...
A: This question belongs to power electronics. It is based on the concept of ripple factor . Problem ca...
Q: What is the period of a 50 Hz signal? Enter your answer in milliseconds but only enter the numeric...
A: Frequency F = 50 Hz Time period T = ? Time period T= 1/F
Q: +22 V 10 kQ 39 k2 10 µF 10 µF VCE B = 140 3.9 k2 1.5 50 μF
A:
Q: find the power dissipated in each conductor: (P=Vi) Facts: R1=245Ω, R2= 440Ω R3=100Ω, V1=12V V2= 10...
A:
Q: When a 76.20 Hz sinusoidal voltage is applied to the input of a full wave rectifier, the output freq...
A:
Q: 4 Ip (mA) 20아 %3D 19+ %3D Actual commercially available unit 18+ 3D 17- 3D 16- Eq. (1) 15- 14- %3D 1...
A:
Q: 1. Compute voltage peak. Is it equal to what you are expecting base from the set values of your VAC ...
A: The diodes are made of semiconductor materials. Silicon and germanium are common semiconductors for ...
Q: A 480-V rms source supplies a load that absorbs 100 kW at a 0.7 lagging power factor. A capacitor is...
A: The solution is given below
Q: Consider the Circuit shown below: Rf Ri Vo Vin Solve for the required value of Rf in kOhms such that...
A: We need to find out feedback resistance for given non inverting amplifier
Q: For the network of Fig. 2.162: (a) Calculate 57. (b) Compare 57 to half the period of the applied si...
A: The time constant is the time required by the capacitor to charge 63.5% of its final value.
Q: A long - shunt compound generator delivers a load current of 5OA at 500V and has armature, series fi...
A: Long Shunt Compound DC Generator A long shunt compound dc generator is a kind of compound wound dc g...
Q: 25. The maximum instantaneous voltage and current output of an alternator are 300 V and 20 A, respec...
A:
Q: Perform the following operation and express the final result in the polar form: 5430degrees + 84 - 3...
A:
Q: 1220'v A 220°A 12 Vo I, 21x -ji07
A:
Q: j20 10 10 240 A 20 2V, 1220'v ell
A:
Q: 10.3: For the circuit shown: 1. Write the voltages w.r.t currents equations (Z-Parameters). 2. Write...
A:
Q: 3. R, =_MQ = 50 MO R=50 kn
A: When two resistors are in series Their equivalent resistance will be addition of individual resistan...
Q: 6. A 10 kW, 250 V Shunt motor has an armature resistance of O.5 ohm and a field resistance of 200 oh...
A: The solution is given below
Q: Use Kirchhoff's Laws to find the branch currents indicated in the following networks
A: In this question We need to determine the branch currents indicated in the following networks using ...
Q: 2. Sketch a simplified equivalent circuit of a transformer X, R, X, R, W V Figure 1: Parameters for ...
A: Electrical machines can be either generator, transformer or motors. They can be either Ac machines o...
Q: xn] is shown in the figure below. Sketch the sequences x1[n] and x2[n] specified x1[n] = x((n – 2)),...
A:
Q: 2. Sketch the following convolutions: a(t) = rect b(t) = ("C. 9, 0く) 0 <t <1 other c(t) = 8(t – 1) (...
A:
Q: Find Vo in the network using Norton's Theorem. 220°A 1220°v (A 12 12 Ix 2Ix -j127 Vo
A:
Q: An iron-cored choke is designed to have an inductance of 20 H when operating at a flux density 1 T, ...
A:
Q: How many bits are needed to quantize an analog signal into at least 250 levels?
A: In analog to digital converter, the given analog signal is sampled at regular intervals and quantize...
Q: Determine the value of the gain of the circuit. Solution: 5 24k. 10kΩξ 40k2 4kn Vout 10kn 12k2 Vs +,
A:
Q: Audio amp: 35 dB gain (a) What is the total power gain of the receiver from antenna to speaker? (b) ...
A: aTotal power gain of the receiver from antenna to speaker calculation:PG=GRF-Lmix+GIF-Ldet+GAFSubsti...
Q: Consider the networks below. Use superposition to find the indicated branch currents. I1 2260°A(A j4...
A:
Q: The selectivity of a tuned circuit is its ability to select (tune) one particular frequency and reje...
A:
Q: R4 R3 R2 iout R, Vs + R53 Vout
A:
Q: For circuit A, B, C, and D are connected in series across a 200V 50HZ supply. The voltage across thr...
A: The detailed solution is provided below.
Q: The Buck converter exhibits a right half plane zero in the control to output transfer function? O Tr...
A: The solution is given below
Q: 5- Discuss the effect of changing the number of bits on the recovered analog waveform. 6- Discuss th...
A: “Since you have asked multiple question, we will solve the first question for you. If you want any s...
Q: Factors Influencing Capacitance are (select all that apply) Select 3 correct answer(s) | Dielectric ...
A: Consider the formula for the capacitance as, C=εAd Here, d is the distance between the plates A is t...
Step by step
Solved in 2 steps
- 1. A single-phase power system as shown in Figure 1 consists of a 240 V, 60 Hz generator supplying a load, Zod = 8 + j6 Q through a transmission line of impedance, Zne = 0.08 + j0.14 Q. Answer the following questions: (1) transformer, T; and T2. Determine the voltage at the load and transmission line losses without the (ii) Determine the voltage at the load and transmission line losses with the transformer, T, and T2. T1 T2 1:10 10:1 IG Zaine Zioad source Figure 1Three single-phase two-winding transformers, each rated 3kVA,220/110volts,60Hz, with a 0.10 per-unit leakage reactance, are connected as a three-phase extended autotransformer bank, as shown in Figure 3.36(c). The low-voltage winding has a 110 volt rating. (a) Draw the positive-sequence phasor diagram and show that the high-voltage winding has a 479.5 volt rating. (b) A three-phase load connected to the low-voltage terminals absorbs 6 kW at 110 volts and at 0.8 power factor lagging. Draw the per-unit impedance diagram and calculate the voltage and current at the high-voltage terminals. Assume positive-sequence operation.Consider the single-line diagram of the power system shown in Figure 3.38. Equipment ratings are Generator 1: 1000MVA,18kV,X=0.2perunit Generator 2: 1000MVA,18kV,X=0.2p.u. Synchronous motor 3: 1500MVA,20kV,X=0.2p.u. Three-phase -Y transformers T1,T2,T3,T4,: 1000MVA,500kV,Y/20kV,X=0.1p.u. Three-phase YY transformer T5: 1500MVA,500kV,Y/20kVY,X=0.1p.u. Neglecting resistance, transformer phase shift, and magnetizing reactance, draw the equivalent reactance diagram. Use a base of 100 MA and 500 kV for the 50-ohm line. Determine the per-unit reactances.
- Lighting arresters are used in power system to protect electrical equipment against a. Direct stokes of lightning b. Over-voltages due to indirect lightning stroke c. Power frequency over-voltages d. Over-currents due to lightningExplain the basic components of a typical power system, including generators, transformers, and transmission lines.OR e) Explain the following protection schemes of alternators. i) Stator inter turn protection. ii) Merz price protection.
- a. i. Why do power systems operate in an interconnected arrangement? ii. How is the frequency controlled in a power system? iii. What is meant by the stiffness of a power system? b. Two 50 Hz power systems are interconnected by a tie-line, which carries 1000 MW from system A to system B, as shown below. After the outDage of the line shown in the figure, the frequency in system A increases to 50.5 Hz, while the frequency in system B decreases to 49 Hz. i. Calculate the stiffness of each system. ii. If the systems operate interconnected with 1000 MW being transferred from A to B, calculate the flow in the line after outage of a 600 MW generator in system B. 1000 MW A ВA single-phase power system consists of a 600-V 50-Hz generator supplying the circuit shown in Figure (1-a). Find the following: 1) What will the voltage at the load be? What will the transmission line losses be? 2) Suppose a 1:15 step-up transformer is placed at the generator end of the transmission line, and a 20:1 step-down transformer is placed at the load end of the line, as shown in Figure (1-b). What will the load voltage be now? What will the transmission line losses be now? V=600 20°V IG V=600 20°V T₁ 1:15 I line 0.22 22 j 0.30 Ω www Z line I₁ line Figure (1-a) 0.22 S2 Z line j 0.30 Ω Figure (1-b) V load + T2 20:1 load Z load I load 6+j8 Ω + Vload Z load 6+18 Ω1- 1-Nose point in the PV Curve of an alternator gives you the information about a.Intersection of load line and generator characteristics b.Characteristics load line c.Maximum Real Power it can deliver d.Good voltage profile
- One-line diagram of a power system is shown below. Relevant details are mentioned below. Generator: 100 MVA, 11 kV, 3-phase, reactance 20%; Transformer T1: 100 MVA, 10/132 kV, reactance 6%; Transformer T2: 80 MVA, 132/10 kV, reactance 5%; Line reactance is 100 Q. Motors M1 and M2 are rated at 50 MVA and 40 MVA respectively both at 10 kV and 20% reactance. In the above, reactances are per-phase values. Taking generator rating as base, draw the per- phase impedance diagram in which the elements need to be expressed in per unit. * T1 M, Transmission Line G M2) AThe main advantage of A.C. systems over D.C. systems is: a) transformers can be used to change D.C. to A.C. IRtransformers can be used to change voltage levels. b) , 00 transformers can be used to change A.C. to D.C. d) ) transformers can be used to change power levels.Explain the concept of a power system and its components, including generators, transformers, and transmission lines.