5- Why should the terminal voltage drop more in the case of shunt generator than in the case of separately excited generator as the load current is increased ?
Q: How can the speed effect on the No Load characteristic And the external characteristic Of the shunt…
A: No load characteristics is also called magnetic characteristics. This characteristics shows the…
Q: A synchronous generator having no-load frequency of 51HZ and droop constant of 0.5Hz/MW is…
A:
Q: Define the drooping charateristic of a DC generator. What is its significance when two DC generators…
A: To define the drooping charateristic of a DC generator. To find its significance when two DC…
Q: Which of the following factor is responsible for negative voltage regulation of a DC generator?…
A: Voltage Regulation :- It is defined as the ratio of change in full-load voltage from no-load voltage…
Q: Is there a great difference between long and short - shunt compound generator , show that ?
A: The main difference between long shunt compound generator and short shunt compound generator: Long…
Q: Is the parallel operation of shunt generators stable if their characteristics are not identical?…
A: Parallel operation of DC generators is required to meet the extra load demand. It is always…
Q: Can an induction motor work as a generator ? Why ?
A: An AC motor is an electrical machine that takes AC electrical input energy and produces mechanical…
Q: 5- Why should the terminal voltage drop more in the case of shunt generator than in the case of…
A: Electrical machines can be either generator or motors. They can be either Ac machines or DC…
Q: b) Why the power factor of three-phase induction motor low at no-load and increase as applied load…
A: Power Factor = Real Power/Apparent Power,or p.f. = W/VA.Then the cosine of the resulting angle…
Q: Discuss power equation of synchronous motor
A: A synchronous motor coverts electrical power to mechanical power but always runs at synchronous…
Q: For which reasons its not possible to develop rated voltage of d.c shunt generator, both in unloaded…
A: It is not possible to develop rated voltage in dc shunt generator because of the commutation process…
Q: 1. How does loading of the Generator affect the Generator’s Terminal Voltage (VT) and Load Current…
A: Electrical machines can be either generator or motors. They can be either Ac machines or DC…
Q: What are the reasons for the drop in terminal voltage of self excited shunt generator When loaded?
A: With increases in the load, the terminal voltages of all dc shunt generators decrease.
Q: : in DC generator how can get the output voltage more than no-load voltage? which type of connection…
A: A DC machine is classified in two types. DC motors DC generators Above question is based on DC…
Q: 1. How does loading of the Generator affect the Generator’s Terminal Voltage (VT) and Load Current…
A: It is asked the affect of loading on the Generator’s Terminal Voltage (VT) and Load Current (IL). We…
Q: Draw the Terminal Characteristics of the following Generators. (i)Shunt DC Generator (ii)Series DC…
A:
Q: 4- Is there a great difference between long and short shunt compound generator, show that?
A: Compound Generator: The generator which have both shunt fields and series fields is called the…
Q: Load characteristic of DC generator is a graph between Il and Vt. True or False
A: The load characteristics of a dc generator gives the relationship between the line current and…
Q: The effect of the capacitor on the operation of the asynchronous machine as a generator what? Please…
A: The asynchronous machine acting as a generator is a type of induction machine. The rotor of such…
Q: The purpose of diverting resistance in series dc generator to control the effect of field winding
A: Divert resistance in DC series machine. This resistance is connected to parallel of field winding…
Q: . Type of compound DC Generator wherein the shunt field winding is connected across the armature and…
A:
Q: Why the power factor of three-phase induction motor low at no-load and increase as applied load…
A: Power factor is define the cosine of power factor angle. So Why the power factor of three-phase…
Q: give one example of asynchronous generator and its operation and characteristics
A:
Q: Which of the following is true for the phasor diagrams drawn according to the ohmic, inductive and…
A: For a synchronous motor, In normal excitation condition, synchronous motor draws sufficient amount…
Q: 2. For which reasons its not possible to develop rated voltage of d.c shunt generator, both in…
A: It is not possible to develop a rated voltage in dc shunt generator because of the commutation.…
Q: 0.07 ohm, respectively. In order to make the generator flat-compound, so that it will have a no-load…
A: Given 10kW 250V compound generator No load voltage 230V Shunt field has 800 turns per pole And…
Q: Rotor leakage impedance at starting is different from its value at normal running conditions. a)…
A:
Q: ndard practice of synchronous generator construction now a days is to ndrical field ating armature…
A: These are the few questions related to the basic understanding of alternators their construction and…
Q: Open circuit (OC) and short circuit (SC) tests on an AC generator are conducted under the condition,…
A: Open circuit test: In this test the generator must be moved to at its rated speed and no-load must…
Q: b) Why the power factor of three-phase induction motor low at no-load and increase applied load…
A: In this question , we will write the reason of low power factor of induction motor at no load..
Q: What is the effect of variation of speed on build up in generator shunt
A: In a DC generator, the relation between generated voltage or build-up voltage and speed is given by,…
Q: For DC shunt generator, external characteristics is the relationship between Answer:
A: For DC shunt generator, external characteristic is the relationship between
Q: The following characteristic curve represents: VT Select one: O a. The terminal characteristic of…
A: The given characteristics curve is,
Q: Demonstrate over compound flat compound and under compound DC generator with the help of circuit…
A:
Q: QI: What is the relation between the speed of compound generator and shunt field current? Write your…
A: (a) At no load The figure below shows a graph of variation of field current (If) with the no-load…
Q: Compared between three_ phase induction generator and synchronous them at impedance field and EMF…
A:
Q: 1- What is the no-load characteristic of d.c. generator? ic?
A: As per Bartleby guidelines we are allowed to solve only one question, please ask the rest again. The…
Q: Which of the following factor is responsible for negative voltage regulation of a DC generator? O…
A: Over compound dc generator has negative voltage regulation.
Q: 1. What is the difference between circle diagram method and equivalent circuit method in calculating…
A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…
Q: A three phase, synchronous generator ed at reactance of 1.2 ohm /phase, and an armature resistance…
A:
Q: How does loading of the Generator affect the Generator’s Terminal Voltage (VT) and Load Current…
A:
Q: 4- Why should the terminal voltage drop more in the case of shunt generator thần in the case of…
A: The terminal voltage drop more in the case of shunt generator than in the case of separately…
Q: 1. How does loading of the Generator affect the Generator’s Terminal Voltage (VT) and Load Current…
A: When we increase the loading value, then it draws more current. Let's draw the general circuit…
Q: 4. Is there a great difference between long and short shunt compound generator, show that?
A: In short shunt connection the shunt field is associated straightforwardly across the armature…
Q: What are the components of generator?
A: we want to know What are the components of a generator?
Q: 3) Why Ego is not equal to zero at If=0 in separately excited do generator?
A: Need to find Eg0 is not equal to zero at If=0 in separately excited DC generator why
Q: (a) With the aid of diagrams describe the basic topology of a wound field 3 phase synchronous…
A: Dear student as per our guidelines we are supposed to solve only one question.kindly repost other…
Q: Why should the terminal voltage drop more in the case of shunt generator than in the case of…
A:
Q: Problem 4.9: A 60-Hz synchronous generator rated 30 MVA at 0.90 power factor has the no-load…
A:
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
- 5.26. A 23-kW, 230-V, 900-rpm shunt generator has 240.5 V induced in its ar- mature winding when it delivers the rated load at the rated voltage. The field current is 5 A. What is the armature resistance? What is the field- circuit resistance? The no-load voltage of the generator is 245 V. What is the voltage regulation? Why is the induced emf at the rated load not equal to that at no load?L-1). The 3-phase wound-rotor induction motor has .... . a) high starting torque b) low starting current c) both "a" and "b" d) neither "a" nor "b" L-2). The 3-phase wound-rotor induction.........a) motor has a wire wound rotor b) motor's rotor can be connected to an external resistive load by way of slip rings and brushes c) motor requires more maintenance than the 3-phase squirrel-cage induction motor d) all of the above L-3). The 3-phase wound-rotor induction motor's rotor circuit's resistance should be adjusted so it is__________ during starting. a) low b) high c) either "a" or "b" d) neither "a" nor "b" L-4). Will a 3-phase wound-rotor induction motor start with no external circuit connected to its rotor leads? a) yes b) no2. Describe the Torque-Slip characteristics of a three phase induction motor.
- Describe the basic circuit of DC Generators including its yoke, fid windings, interpoles, fieldpoles, difference of shunt coils and series coils, commutator and brushes ?In alternator armature winding why we prefer : a- short pitch winding w.r.t. full pitch winding? b- distributed winding w.r.t. concentrated winding? c- double layer winding w.r.t. single layer winding?Q3/ A/ Compare between de series and shunt generator. Q3/ B/ Briefly explain the commutating process in dc machine.
- 1) P.f of inductive load is corrected by connecting . . across it. .... ...... 2) Open circuit test measures . losses. 3) The output variables of a motor are and ........ ... .... 4) For a motor output power is given by ...... 5) Flux control, voltage control, and armature control are three methods for ....... of dc motor. 6) A transformer takes 100V at primary and gives 50V at secondary, its turn ratio equals 7) The given set of equations represents . . Ea – laRa = Vr , la = IL , %3D Rf 8) The given set of equations represents. la = !, + IL, VT Rf Ea – laRa = Vr , 9) The given set of equations represents . Ea – laRa – IseRse = Vr, la = Ise = l, %3D | 10). .. has more initial torque than shunt dc motor.1-transfer function of DC Series motors. 2-block diagram of DC Series motors.1- To control the speed of an induction motor, the supply frequency is reduced by 10%. For the same magnetizing current to remain constant, the supply voltage must be....... a) Reduced by 10%, b) Reduced by 20%, c) Increased by 10%, d) Increased by 20% 2. When maximum starting torqua ic ohtoinod
- A value of magnetizing current in a 3-phase induction motor * gives power factor smaller .. larger smaller. .poor large . better O large...poor OElectrical Engineering A 50-kW, 250-V short-shunt compound generator has the following đata: R, = 0.06 2, R, = 0.04 2, and R,= 125 2. Calculate the induced armature voltage at rated load and terminal voltage. Take 2 V as the total brush-contact drop. Ans: 272V6. The relation between the field current and the armature current in an alternator with the armature short-circuited can be shown byA. a rated-current 80% pf saturation curve.B. a synchronous impedance curve.C. an open-circuit saturation curve.D. a zero-power-factor regulation curve.