3- Determine the coil span for 3-phase, two pole alternator, the pole pitch is equal to 18 slots and the coil span factor is.

Q: Armature reaction in an alternator affects generated voltage/phase Select one: O True O False

A: In this question we will write effect of armature reaction in an alternator....

Q: Describe the simulation of three phase induction motor

A: Three Phase Induction Motor: A three-phase induction motor is an electro mechanical energy converter…

Q: Example 1 A 3-phase, 2-pole induction motor is connected to a 50 Hz supply. Determine the…

A: Since you have asked multiple questions in a single request, we will be answering only the 1st…

Q: A 3-phase, 60 Hz, 6 pole alternator has an air gap flux which is sinusoidally distributed. The…

A: Given data, No. of poles=6 Frequency=60Hz No. of phases=3 Slots per pole per phase=5

Q: What are the losses taking place in an alternator?

A: The Power losses occur in the alternator due to a number of different mechanisms. These can be…

Q: Draw the winding diagram of a simplex 2-layer lap winding for a 4-pole generator with 20 coils.

A:

Q: The reactance’s of the alternator  during the periods of the subtransient, transient and steady…

A: An alternator/Synchronous generator is a type of electrical machine that converts mechanical energy…

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A: Sycronous impedance = per phase voltage/per phase armature current.  Voltage regulation =(internal…

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A:

Q: (a) Calculate the synchronous speed of an eight-pole induction motor when supplied with power from a…

A: Given: An induction motor has following specifications, Number of poles, P=8 Frequency of source,…

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A:

Q: EXPLAIN THE WORKING PRINCIPLES OF SYNCHRONOUS ALTERNATOR IN ACCORDANCE WITH: a. Mechanical and…

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Q: Explain the reasons for the differences between the measured and predicted voltage regulation at…

A: As per our honor policy we are bound to solve only one question at a time, since you have not…

Q: A 3-phase, star-connected alternator is rated at 15000 kVA, 11 kV. The armature resistance is I-5…

A: The solution is given below

Q: A 3-phase, 16 pole alternator has a star connected winding with 144 slot and 10 conductor per slot.…

A: This question belongs to electrical machine . It is based on the concept synchronous generator .…

Q: Characteristics curve of a single phase induction motor (open and closed circuit )

A: We need to  draw characteristics curve of a single phase induction motor (open and closed circuit ).

Q: 5. Why the efficiency of large size alternator should be larger than that of small size?

A: Because conducting material have wide contact with atmosphere in large size alternator, the heating…

Q: A three-phase star-connected alternator working at 1400 KVA,50 Hz,2100 V, has an armature dc…

A: impedance open circuited voltage at field currentshort circuited current at same field current.…

Q: An alternator is much less likely to burn out on a sustained short-circuit than a separately excited…

A:

Q: discuss a) the frequency of an alternator. b)what is the disadvantages of split phase induction…

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Q: what is the kilowatt rating of a three-phase 975-KVA generator at. a.  unity power factor ? b. 80…

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Q: A 4-pole, 3-phase alternator drives at 1000 r.p.m. is supplying to an induction motor which has full…

A: Given: 3 Phase Alternator P = 4 Ns = 1000 RPM Full load Speed = 2880 RPM

Q: The direct axis and quadrature axis reactances of a salient pole alternator are 1.4 per unit and 1.1…

A:

Q: 3. Two similar single phase alternators are operating in parallel. The armature winding resistance…

A: In parallel connections circulating current flows from leading angle to lagging angle, assume that…

Q: 1. A 3-phase, star-connected alternator is rated at 15000 kVA, 11 kV. The armature resistance is…

A: Terminal voltage  = 11kV Th rate  = 15000 kVA Value of resistance  = 1.5Ω Value of reactance = 30Ω

Q: Two similar single phase alternators are operating in parallel. The armature winding resistance of…

A:

Q: A 4 pole, three-phase, the star-connected alternator has an armature with 120 slots and 4 conductors…

A: A 4 pole, three-phase, the star-connected alternator  armature 120 slots 4 conductors per slot.…

Q: Draw a single-layer, short-pitch (5/6), distributed lap-winding for a 3-phase, 4-pole, 48 slot…

A: Alternator:- Alternator is a machine which is used to convert the mechanical energy into the…

Q: ii)Conduct suitable tests to measure the copper loss occurs in a three phase Induction Motor.

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: What will be the frequency (in Hz)  for 100kW, 230V, 12-Pole, alternator running at 12 rps?

A:

Q: A single phase, 2000 V alternator has armature resistance and reactance of 0.8 ohms and 4.94 ohms…

A: Given, A single phase alternator has V= 2000 V  R= 0.8 ohms X= 4.94 ohms I= 100 A Power factor,…

Q: In DC Shunt generator, the armature winding and field winding are connected in series Select one: O…

A: 1) In DC shunt generator the armature winding and field winding are connected in parallel while in…

Q: As load p.f. of an alternator becomes more leading, the value of generated voltage required to give…

A: Consider the voltage drops in the synchronous generator are due to drops that occur in the armature…

Q: A three-phase, 4-pole, 1,500 rpm alternating having a double layer-windings with 18 turns per coil.…

A:

Q: Why the efficiency of large size alternator should be larger than that of small size?

A: In large size alternator heating losses are less because conducting material have wide contact with…

Q: A three-phase star-connected alternator working at 1400 KVA,50 Hz,2200 V, has an armature dc…

A: A three phase,star-connected alternator has, Rating = 1400 KVA, Line voltage (VL)= 2200 V Armeture…

Q: Introduction and explanation about alternator regulation

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Q: The reactance's of the alternator during the periods of steady state are given bellow, Leakage…

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Q: Calculate the speed and open-circuit line and phase voltages of a 4-pole, 3-phase, 50-Hz,…

A: Calculate the speed and open-circuit line and phase voltages of a 4-pole, 3-phase, 50-Hz,…

Q: Problem #1: A 6-pole, 3-phase, Y-connected, 60-Hz alternator has 12 slots per pole and 4 conductors…

A: In this question 3 phase alternator is given....We have to find out pitch factor , distribution…

Q: The power factor of an alternator depends on Load а. b. Speed of rotor C. Core losses d. Armature…

A:

Q: How can the phase rotation of one alternator be changed in relationship to the other alternator?

A: Phase rotation: It is also called as phase sequence. It is the order in which the waveform of AC…

Q: 1. Synchronous reactance of an alternator represen. a) Armature reaction reactance and leakage b)…

A: 1. Synchronous reactance is a combination of armature winding leakage reactance and a fictitious…

Q: A single-phase rotory converter has a commutator voltage of 120 Volts. When the de output current is…

A:

Q: DC

A: As per company rule, only one question can be solved or the same type question with 3 subparts, here…

Q: Draw a developed diagram of a simple 2-layer lap-winding for a 4-pole generator with 8 coils.

A: According ro question,  Draw a developed diagram of a simple 2-layer lap-winding for a 4-pole…

Q: A three-phase induction motor operates at a slip of 3% and has a rotor copper loss of 300W. The…

A:

Q: 1_Plot the relationship between the torque and the speed for single-phase induction motor (split…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

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.