Answered: Question 1 In a 8-poles synchronous…

Engineering

Electrical Engineering

Question 1 In a 8-poles synchronous generator, the number of poles for the Sth-harmonic air gap MMF is: 20 Os 10 02

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

Chapter7: Symmetrical Faults

Section: Chapter Questions

Problem 7.3MCQ: The amplitude of the sinusoidal symmetrical ac component of the three-phase short-circuit current of...

See similar textbooks

Related questions

Q: The sequence components of the fault Izero -j1pu. The type of fault in the system is current are as…

A: In this question we need to identify the type of fault

Q: A series RL circuit has the following values: R = 1941 2 L = 1.3 H V = 33sin(425t + 12°) volts…

A: In this question We need to determine the total impedance in phasor form. We know Inductive…

Q: E. Transfer Function. Determine the Transfer Function of the following systems. 11) (See Figure 1)…

A: In this question we need to find the transfer function of the given system

Q: Discuss in detail about the role of SVC in improving the stability limit and enhancing the power…

A: Step-1-> SVC stands for Static Var Compensator, which is a type of flexible AC transmission…

Q: (a) An industrial load consumes 44 kW at 0.82 pf lagging from a 240/0° -V rms 60 Hz line. A bank of…

A: In this question we need to find the new power factor of the total load when the capacitor is…

Q: 2. Consider the NAND gate given in Fig. 2.6. Complete the Voltage Truth Table given on the right.…

A: According to the question, for the given circuit of NAND gate as shown below We need to find the…

Q: Determine i, on the nodal circuit below. o 6 kn www 12Κ Ω V₂ 3k0 2mA

Q: What is the resistance (in units of 2) of a wire made of a material with a resistivity of 3.2 ×…

A: Resistivity is given ρ=3.2×10-8 Ω-m. Length of wire L=22.2 m. Diameter d=0.50 mm.

Q: In the circuit given in the figure, T1 thyristor is triggered at 45 degrees and T2 thyristor is…

A: Given data Thyristors T1 firing angle, α1=45° Thyristors T2 firing angle, α2=225° Input voltage,…

Q: Calculate the Fourier series and Fourier transform of the periodic signal x(t), then draw the…

A: Given Data: A continuous-time signal of, xt=3cosΩot+2sin2Ωot To Find: Fourier series Fourier…

Q: x(t) 2 0 2 (a) determine if x(t) is even or odd. If neither, sketch the even and odd parts of ä(t).…

A: In this question We need to check the signal is even or odd. Also sketch the even and odd part of…

Q: 4. Design a digital circuit using three D flip-flops to control the shutdown sequence for an…

Q: For R1=8, R2=8, R3=13, R4=24, R5=29, V1=85 V, I1=2 A & I2=8, use the principle of superposition to…

A: Given: A network, with, R1=8?, R2=8?,R3=13?,R4=24?, R5=29?,V1==85 V, I1=2 A, I2=8 A, To…

Q: O A transfer function is given by 120(8+1) 8(8+10) T (s) where s = jw. NOTE: This is a multi-part…

Q: Vin R₁ www R₂ (1) Find the transfer function (H(s) : = Vout (2) What is the function of this…

A: Given Data: An inverting Op-Amp with, Input voltage Vin Output voltage Vout To Find: Transfer…

Q: What are the differences between a Flyback Converter and a Push-Pull Converter in Electrical…

A: Both flyback and push-pull converters are commonly used in electrical engineering for power…

Q: 18. Given a system with a 2mw light source, 2dB coupling loss, 12 dB fiber loss, and 0.5 dB loss in…

Q: A 20 hp, 440 V, 60 Hz, three-phase star connected synchronous motor has an armature resistance per…

Q: Q.2 (a) A system as presented in Figure Q2(a) has four input signals, which are m(t), n(t), p(t) and…

Q: Determine the current i(t) for t>0 (prefer to solve it in time domain. You can still get all points…

Q: 9. Sketch Q. The flip-flop PRESET and CLEAR are asynchronous.

A: For the given SR flipflop the output of the flipflop need to drawn based on the input value to the…

Q: If Vc(t) = 4Cos105t V in the circuit given below then find Vs(t) ? Vs(t) 2mH :80nF

Q: A pilot lamp is controlled by a NCTC timer contact. The time delay is set for 22 seconds. If the…

A: NCTC timer, Pilot lamp is operated from Normally Closed, timed closed timer

Q: an explanation of flip-flop circuits and their uses Sequential or combinational circuits.

Q: Calculate inductance L2 value, when current / gets it's highest value. What is current / and power P…

A: In this question, We need to determine the value of inductance L2 , current I, and power consumed…

Q: SOURCE TRANSFORMATION VS RA RB Do not include the unit. The answer must be in 2 decimal places. IS…

A: In this question We need to determine the current in the resistance RB as shown the circuit. We…

Q: Data at a bit rate R must be transmitted using either binary NRZ polar signaling or 8-ary PAM NRZ…

A: According to the question, data at a bit rate Rb must be transmitted using either binary NRZ polar…

Q: What are the different types of Feedback Amplifiers used in practical applications?

A: Feedback amplifiers are widely used in various practical applications such as audio amplifiers,…

Q: Determine the magnitude and phase of the frequency response described by the difference equation…

Q: The i - v characteristics of the diode in the circuit given below are = S A, v-0.7 500 0 A, v≥ 0.7V…

A: Given circuit- i=v-0.7500 A, v≥0.7 V0 A, v<0.7 V To find- The current in the…

Q: Question-1 Consider the following circuit, and given R = 102, L = 0.01H, and C= 0.1mF: 1) In + V out…

Q: Vc, and the voltage output is taken at Vout Va Vb [ 1.5 ΚΩ Q1 Q2 5V Q3 Vout Vc A. What is the…

Q: Find lo in A (ampere) unit if E is 11 and R is 537. (Answer should roundoff to 3 decimal places) +…

A: Circuit is, E=11 V and R=537 Ω.

Q: 3. (a) (b) 12 V, is wired to a solenoid with self-inductance, L= 0.44 H, two resistors, R₁ = 162,…

Q: 1. Solve for the transfer function G₁ (s) = 1 1 (S) T(s) G₂ (s) = #2 (S) T(S)

A: The transfer function for the given mechanical rotational system needs to be calculated. The…

Q: A discrete-time system is described by the following equations Го 3 07 27 x(k+1)= 0 2 1x(k)+ 1u(k)…

A: The state-space model of a discrete-time system is given as xk+1=030021110xk+21-1uk,yk=021xk. We…

Q: IA VA + I Calculate: + V₁ www R₁ Consider the circuit above, where: VA=6 V, R1=5 02, R2=8 0, R3=8 Q…

Q: A four-pole induction motor drives a load at 2478 rpm. This is to be accomplished by using an…

A: speed of the induction motor Nr = 2478 rpm dc voltage V = 400 V number of poles P= 4 slip =…

Q: The sinusoidal voltage source in the circuit seen in (Figure 1) is operating at a frequency of 46…

A: supply voltage Vg(t) =399 cos(4.6×104t) V to find the value of K at maximum peal amperes of i1…

Q: Q1) Find the string efficiency of each line of a 3-phase is hung by a 3 strings of insulators. Each…

Q: ectromagnetic induction between two current loops Main question: Is the electromotance induced in a…

A: Is the electromotance induced in a coil of wire really the derivative of the magnetic flux passing…

Q: The circuit after source transformation will be as follows: R4 V where R= Oa. 31.5 Ob. 15.75 Oc.…

A: In this question we need to find the value of R , V and Vx of the given equivalent circuit. For the…

Q: Question-2 Consider a transfer function of a system H(s) 1) 2) = (s+4)(s²+7s+10) s² (s+3)(s+6)…

Q: For Vcc as 2.5 V, Fig. 2 shows the common-collector amplifier (emitter follower). Vin is a 10-KHz…

A: In the given questions we need to design the circuit based the given parameters. Voltage gain= 0.9…

Q: QUESTIONS 1. Sketch the root locus for the unity feedback system shown in figure R(S) C(s) G(s) H(s)…

Q: A four-pole, three-phase induction motor drives a turbine load. At a certain operating point the…

Q: Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be…

Q: Consider the carrier modulator shown in the figure below, which transmits a binary carrier signal.…

A: The data rate, Rb=6 Mbits/s The frequency of FSK generated, fc1-fco=3 MHz

Q: The time constant of an LR circuit represents the time in which the current in the circuit A Reaches…

A: Given circuit is a LR circuit, For LR circuit current is given by, I=Io1-e-tτ.

Q: , and vx Find the values of i that is formed from the three resisters. esistance Req ܕܠܶ, 15 V 102…

Concept explainers

Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Given data :

VIEW

Step 2: Calculation of synchronous speed :

VIEW

Solution

VIEW

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

6) Provide two types of power loss in synchronous generators.
500MVA, 21KV, star connected, 3ph 50Hz synchronous generator is operating at the rated voltage, a 3ph fault occurs at its terminal. Its reactance in p.u. are 1.5 of synchronous, 0.5 of transient, 0.2 of sub transient. The transient time is 500ms and the sub transient time is 35ms. 1. What will the AC component be after 1.5 cycles?
A synchronous generator is feeding an infinite bus through a line. At the middle of the line a shunt capacitor is added. The stability limit will O a. be increased Ob. be decreased c. be zero O d. remain the same
SYNCHRONOUS GENERATOR A 13.8 kV, 50-MVA, 0.9 p.f., 60 Hz, four pole, Y-connected synchronous generator has a synchronous reactance of 2.5 ohms, and an armature resistance of 0.2 ohm. At 60 Hz, its friction and windage losses are 1 MW, and its core losses are 1.5 MW. The field circuit has a dc voltage of 120 V, and the maximum field current is 5A. The current of the field circuit is adjustable over the range from 0 to 10 A. The OCC of this generator is shown in the figure.
9.09 The flux density distribution in the air-gap of a certain generator is such that it contains a fundamental, a third harmonic, and a fifth harmonic. The flux per pole due to the fundamental distribution is 9 x 10-3 weber, that due to the third harmonic distribution is 0.9 x 10-3 weber, that due to the fifth harmonic distribution is 0.4 x 103 weber. There are four armature slots per phase per pole, the connection are made for three-phase wye. and the coil pitch is 12/15. The frequency is 60 cycles and the generator has 4 poles. (a) Calculate the emf/turn. (b) If there are six turns/coil and two coil sides/slot, calculate the emf per phase. (c) Calculate the emf between line terminals. Ans. 2.32V; 212V; 364V
question Oc. 0.08 O d. 0.04 Generators using salient pole structure rotors are called turbo-alternators. Select one: O True O False Skewing of rotor conductors in a squirrel cage induction motor reduces
A 80 MVA synchronous generator has Xs = j8Ω. The generator is supplying itsrated power to an infinite bus at a voltage of 33KV and a power factor of 0.9lagging.Determine the following:a) The generator emf (E) and the power angle.b) The maximum power (Pmax) that the generator can supply and the armaturecurrent (Ia) in this case (i.e. when the power is maximum) and what is thepower factor?
Which of the following is true in the phasor diagrams drawn according to the ohmic, inductive and capacitive operating states of the round pole synchronous generator a) Due to the voltage Efd, the excitation current is large in capacitive operation and small in ohmic operation b) Due to the voltage Efd, the excitation current is large in ohmic operation and small in inductive operation c) Due to the voltage Efd, the excitation current is small in capacitive operation and large in inductive operation. d) Due to the voltage Efd, the excitation current is large in capacitive operation and small in inductive operation.
Describe the operation of a synchronous generator and its role in power generation.
Differentiate between a cumulative compound DC generator and a differential compound DC generator.
The amplitude of the sinusoidal symmetrical ac component of the three-phase short-circuit current of an unloaded synchronous machine decreases from a high initial value to a lower steady-state value, going periods through the stages of __________ and ________ periods.
Problem-7 (e)- A 4 pole, 50 Hz synchronous generator has 48 slots in which a double layer winding is housed. Each coil has 10 turns and is short pitched by an angle to 36° electrical. The fundamental flux per pole is 0.025 Wb. Find the line-to-line in induced emf (in volts), for a three wire connection.