Describe the ultimate cycle method, including the satisfactory perfor- mance. Also briefly discuss limitations of the method.
Q: State assumptions to represent the multimachine equations with a single machine infinite bus system.
A: Multi-machine system can be written similar to a one-machine system by the following assumptions: 1.…
Q: A long shunt generator delivers 25kW at 220V. The shunt, series and armature resistances are 500,…
A:
Q: (a) A short shunt cumulative compound dc generator supplies 4kW at 220V. The Shunt field resistance,…
A: Find the induced emf of the DC short shunt commulative type generator.
Q: What is Commutation in DC Machines? What are the methods you will suggest to improve the commutation…
A: According to the question we have to, discuss What is Commutation in DC Machines? What are the…
Q: Name 3 applications for closed-loop system
A:
Q: riefly explain combined cycle power and cogeneration?
A: The explanation is as follows.
Q: What is Commutation in DC Machines? What are the methods you will suggest to improve the commutation…
A: COMMUTATION IN DC MACHINE: The commutation in DC machine is the process in which the alternating…
Q: Following energized shunt field winding of a DC machine not be opened as it would produce high…
A: A self-excited DC shunt motor (also known as a shunt wound DC motor) has field windings that are…
Q: What is Per Unit system and why it is used in Power system calculations?
A: Various parameters of the power system is represented in the per-unit system
Q: Distinguish between steady state stability and transient stability. Analyze the situation for a…
A: STEADY STATE STABILITY: Steady-state stability is defined as the ability of an electric power…
Q: Discuss system demand and generator loading
A: System demand System demand management (SDM), also called as management control (DSM) or…
Q: For the closed- loop system shown in the figure below. The steady-state error to a unit step is…
A: According to question: a) The value of 'K' for zero steady state error is calculated as…
Q: Ex. 318. Determine the closed-loop steady-state error given a R(s) ----->0-----> G(s) + E(s) C(s)…
A: The solution is given below
Q: The parameters of the exact equivalent circuit for a three-pha connected, 400-V, 10-hp, 50-Hz,…
A: As per Bartleby guidelines we are allowed to solve only three subparts, please ask the rest again.…
Q: For a conventional salient-pole Synchronous Machine obtain the voltage equations for each winding in…
A:
Q: Ex. 318. Determine the closed-loop steady-state error given a R(s) input, (b) unit ramp input,…
A: This is a basic problem on steady state error. The solution is given below
Q: Kindly explain the methods of reactive power compensation in power systems.
A: The methods for reactive power compensation are nothing but the methods by which poor power factors…
Q: Discussion:- 1. What do you understand by "armature- reaction"? Discuss the effect of armature…
A: Solve the first question, unless the student has asked for a specific question to be solved, subject…
Q: Describe the effect of the step size on the slope overload phenomena?
A: Slope overload phenomenon happens when the slope of the input signal is greater than the delta…
Q: Name 3 applications for open-loop system
A:
Q: A constant torque of 63 N-m is applied to the dynamic system illustrated below. Determine the spring…
A: Use newton's second law in the system shown above; T(θ)=Jd2θdt2+Ddθdt+kθ Substitute values in the…
Q: 3. The best indicator of rotor angle stability in a power system is 4. The short circuit current of…
A: Solve the problem
Q: 1- What are the factors that affect the slope overload phenomena.
A: Since there are 5 questions, as per the guidelines, the first problem have been solved.
Q: 5) With derivative controller, the value of maximum overshoot M, is
A: Control systems are represented by transfer function. This can be written in both time domain and…
Q: Please briefly explain the three main technological generations in the historical development of…
A: Relay is a device that sense volt and current values & compare them with the setting values so…
Q: Neglecting the friction in the system, derive from first dynamic principles the mechani- cal…
A:
Q: Two generators rated 200MW and 400MW are operating in parallel. The droop characteristics of both…
A:
Q: Discuss in detail about the steady state performance synchronous machine operation, when connected…
A: The steady-state characteristics of a synchronous motor : It can be represented by phasor diagrams…
Q: The torque angle of synchronous machine operating from a constant voltage bus, is usually defined as…
A: the torque angle of synchronous machine is operated from a constant voltage bus, is usually defined…
Q: estigate the stability of the system using Routh Criterion method.
A:
Q: What is electric traction system, explain its major components. What are the Merits and Advantages…
A: According to the given question, it is required to define the electric traction system along with…
Q: Explain the following terms a) Operating Time b) IDMT…
A: As per the guidelines, we are supposed to answer the first three-part of the question at a time so…
Q: 3c.The initial load angle at steady-state stability is δ0 and the related mechanical power, P0. With…
A:
Q: t are the factors that affect the slope overload phenomena?
A: Slope overload phenomenon occurs in Delta modulation. In Delta modulation (DM), the analog input…
Q: The torque angle of synchronous machine operating from a constant voltage bus, is usually defined as…
A: The torque angle of synchronous machine operating from a constant voltage bus, is usually defined as…
Q: Discuss the effect of adding a zero on time response, through the speed response , overshoot…
A: Zeros are the roots of N(s) (the numerator of the transfer function) obtained by setting N(s) = 0…
Q: 5- Calculate the reactance voltage for a machine which runs at 900rpm number of commutator segments…
A: For the given data Speed of the machine = 900 rpm Number of segments = 65 Brush width = 1.74 cm…
Q: v) Define the term of degree of compounding in DC generators. What are the applications of different…
A: Degree of compounding is defined by the number of turns in series field winding and shunt field…
Q: Two generating units rated for 500 MW and 400 MW have governor speed regulation of 6.0 and 6.4…
A: Here speed governor is given and we need to find new speed governor at 1000MW base
Q: A long shunt generator delivers 25kW at 220V. The shunt, series and armature resistances are 50ohms,…
A:
Q: Compare and contrast a cumulative compound DC generator and a differential compound DC generator in…
A: In cumulative compound DC generator series the series and parallel field flux are summed up whereas…
Q: Ex. 317. Determine the closed-loop steady-state error given a R(s) input, (b) unit ramp input,…
A:
Q: Problem 4: Consider an interconnected 50-Hz power system that contains four turbine-generator units…
A: The solution can be achieved as follows.
Q: Ex. 317. Determine the closed-loop steady-state error given a R(s) + E(s) >0----->| G(s) 1---+--->…
A: The solution is given below
KVL and KCL
KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.
Sign Convention
Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.
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- An electromagnet has a movable iron part and dimensions of magnetic circuit with uniform cross section as shown in figure. The core is made of ferromagnetic material with relative permeability of 3000: a) b) c) Calculate the magnetic reluctance of the circuit and the inductance of the main winding. Determine the air-gap flux, the flux density and the field intensity of the core and gap. Because of a fault in the power supply, the exciting current is increased to 8 A causing the mobile element of the iron core to move to a zero gap position as a result of the excessive electromagnetic force action. If this movement occurs in 0.01 s, find the transient voltage induced in the test coil having two turns. 0.5 mm air-gap 2 cm 2 A 3 cm 2 cm 60 turns 18 cm test coil 24 cm 0.5 mm air-gapQ#3(a): Discuss the following terms (i) Double Revolving Theory (ii) Lap winding and Wave winding (iii) Losses in DC machine Q#3(b): Describe the reasons that single phase IM is not self-starting.Fill in the data for a 16-ampere electric motor, single-phase, no Code letters. a. Branch-circuit protection, non-time-delay fuses: Normal size _____________AMaximum size _____________A Switch size _____________ASwitch size _____________A b. Branch-circuit protection dual-element, time-delay fuses: Normal size _____________AMaximum size _____________A Switch size _____________ASwitch size _____________A c. Branch-circuit protection instant-trip breaker: Normal setting _____________A Maximum setting _____________A d. Branch-circuit protectioninverse time breaker: Normal rating _____________A Maximum rating _____________A e. Branch-circuit conductor size, Type THHN Ampacity _____________A f. Motor overload protection using dual-element time-delay fuses: Maximum size _____________A
- Which one of the following d-c machine losses is determined by applying a standard value rather thanby measurement?A. Friction and windage lossB. Core lossC. Copper lossD. Stray-load loss Note: I have doubts if it is the letter B or the letter D, can you help me in this question, thanks.Q2 (a) Outline with the aid of a suitable diagram the necessary power conversion stages required to interface a small permanent magnet (PM) wind generator to a 3 phase AC grid. (b) Given the operating conditions for a stand alone star connected 3 phase synchronous generator outlined in Table Q2b construct a scaled phasor diagram and determine the resultant load current and power factor. On the same phasor diagram indicate the resultant changes when the load current increases by approximately 20% for no change in (lagging) power factor or excitation voltage. Value Parameter V. 415V Excitation Voltage Load Angle 300V 20° Xs 1.50 Table Q2b A star connected 3 phase wound field synchronous generator with a synchronous reactance of 120 is connected to a 11kV (line) grid and supplies 1MW at 0.92 lagging power factor at its terminals. Calculate the phase current and resultant voltage across the synchronous reactance (Vxs), and from a scaled phasor diagram graphically determine the required…Discuss the concept of load shedding in power systems. What are the reasons for implementing load shedding, and how is it controlled?
- Q2) put (v) or (x) for the following and correct the wrong: 1- It is not always a good idea to have low- voltage regulations, sometimes high impedance and high voltage regulation transformers are deliberately used to reduce the fault voltages in circuit. 2- In Ward Leonard Method the ampere turns are varied by varying the number of field turns. This type of arrangement is used in an electric traction system. 3- Torque produced in the armature is directly proportional to the flux per pole and the field current. 4 - At the time of starting of all DC Motors, except for very small motors, a starter must be connected in series with the armature. 5- Transformer transfers electrical energy from one circuit to another through capacitive coupled conductors (the transformer's coils). 6- Total losses = variable+ constant (iron, mechanical and copper shunt field losses) + (series field and armature winding losses). 2 7- Ph = Ke Bmax f² t²V in dc machine. %3D A B Mech. power developed in armature…What is load regulation?Give the analogous quantities for electrical voltage in linear mechanical, pneumatic, hydraulic and thermal systems. b. Illustrate by diagrams the isomorphism of the processes in RC electric circuit and pneumatic system.
- help me in these questions pls write the questions with the and by (Computer) 1-Which of the following statements INCORRECTLY explain the label in the figure about LVDT working principles? a. Secondary coils are connected in series in such a way that their output is opposing each other. b. Constant DC voltage input to primary coil. c. Displacement moves ferrous rod from central position. d. The difference of the output voltage between the two secondary voltage.==========2- Explain the working principle of the measurement system in the figure below.i. Force input that is supplied to the sensor is processed to give the response in the form of raw output signal.ii. Signal conditioner manipulated the weak signal to give a conditioned input.iii. Analog or digital indicator display the unit that gives output reading of quantity being measured.iv. Measured value is compared with the input value for further action. a. ii, iii and iv only. b. i, ii and iv only. c. i, ii and…Discuss motherboard power delivery systems, including voltage regulators and phases. How do they impact system stability and overclocking capabilities?. A 20 kW compound generator works on full load with terminal voltage of 250 V. The armature, series, and shunt windings have resistances of 0.05-ohm, 0.025 ohm, and 100 ohms, respectively. If the machine is connected short shunt, the emf generated is nearest to. (Our subject is Electrical Machines 1 ) (I need a clear answer and solution. Thank you so much)