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

Q: نقطتا During the test of separately excited generator the speed of rotation must be held constant…

A: as per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

Q: Using a   simple  AC  generator  or   alternator,    show    completely    and     correctly    how…

A: We will refer the concept of AC generator and operation by magnetic field.

Q: An alternator is at lagging power factor when it is normally excited True False

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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: 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…

Q: Explain! The main disadvantage of using short pitch winding in alternators is that it…

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Q: Explain the characteristic of alternator running under load.

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Q: An alternator has 6 poles and runs at 1,000 rpm (a) what is its generated frequency? (b) What must…

A: (a) The speed of the alternator is given by the expression as shown below:  Ns=120fP Plugging the…

Q: A three-phase, star-connected alternator has 6 number of poles, armature with 160 slots and 6…

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Q: What is difference in alternator and generator?

A: Difference between alternator and generator

Q: DRAW AND LABEL THE TWO TYPES CONNECTION OF A THREE-PHASE ALTERNATOR PRODUCING THREE-PHASE VOLTAGES?

A: In this question we will draw three phase alternator which has two types of star type and delta…

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: Differentiate Alternating Current (AC) Generator and Direct Current (DC) Generator.

A: Generators are machines that converts mechanical energy into electrical energy .There are two types…

Q: What are the short circuit test observations of three phase synchronous alternator

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Q: A 3-phase 4-pole alternator has a single layer full-pitch winding with 8 conductors  per slot. The…

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Q: Adjustment resistance in rotor system will --------when three phase load decrease. remain constant…

A: There are few questions related to the basic  connection and construction details of Synchronous…

Q: If the emf from the air gap line is the 3-phase alternator is 440V per phase and armature current is…

A: Given: The emf from the air gap line is the 3-phase alternator is E=440 V Armature current,  I=110 A

Q: Two alternators are connected in parallel to feed a load together. The no-load frequency of the…

A: G1 has a no-load frequency of 51.5 Hz and a slope sP1 of 1MW/Hz.G2 has a no-load frequency of 51Hz…

Q: Design an all dark lamp system for synchronizing two alternator. Explain the process.

A: Design an all dark lamp system for synchronizing two alternator. Explain the process. A fixed…

Q: A three-phase, star-connected alternator has 6 number of poles, armature with 140 slots and 4…

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Q: 5.a. A characteristic common to most steam-turbine alternators is A. belt drive. B. salient-pole…

A: 5. a. The belt drive turbine is commonly employed in windmills.  Salient-pole rotor construction…

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

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Q: In alternators is rotating part. ............... Answer:

A: Alternators are basically AC generators. The main parts of an alternator are Stator, Rotor, Armature…

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: What are factors on which induced EMF of an alternator depends?

A: INDUCED  EMF=4.44FφNKpKdF= frequencyφ=fluxN=speedKp=Pitch FctorKd=Distribution factor

Q: What is the effect of an unbalanced load on the output voltage of an alternator?

A: The explanation is as follows.

Q: A three-phase, star-connected alternator has 8 number of poles, armature with 160 slots and 2…

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Q: Before closing the synchronism switch to connect two alternators in parallel, it is observed in a…

A: Given: A set of 3 lamps

Q: The synchronous reactance of an alternator represents

A: the synchronous reactance term is applied to the synchronous machine

Q: A three-phase, star-connected alternator has 8 number of poles, armature with 120 slots and 2…

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Q: Which one of the following types of alternators would most likely use damper windings to maintain…

A: According to question we have to calculate which one of the following types of alternators would…

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

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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: 2. A synchronous generator is connected to an inductive load, please draw phasor diagram to show the…

A: A synchronous generator connected to inductive load is termed as lagging load connected to the…

Q: For a three phase induction motor neutral wire is not required. Select one: True False

A: To solve above problem one should understand basic concepts of three phase: In a three phase system,…

Q: During the test of separately excited generator the speed of rotation must be held constant and the…

A: In the test on separately excited generator, i.e., magnetization characteristics experiment, the…

Q: EXPLAIN BRIEFLY THE SYCHRONOUS ALTERNATOR WHEN OPERATING AT NO LOAD

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Q: An alternator is at lagging power factor when it is normally excited O True False

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Q: Explain the characteristic of alternator running under load. (Note: I would be glad if it was…

A: alternator  it is a machine or generator which convert mechanical energy into  AC electrical energy.…

Q: Two 75 MVA 3-phase alternator are connected in parallel. The speed load characteristic of the first…

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Q: Two AC generators are to be operated in parallel at the same frequency. Alternator 1 has four poles…

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Q: An alternator is a type of alternating current generator that is electromechanical.   True False

A: An alternator is a device that converts the mechanical energy into electrical energy in the form of…

Q: 3- Determine the coil span for 3-phase, two pole alternator, the pole pitch is equal to 18 slots and…

A: For a two-pole alternator,Pole pitch = 18 slotsCoil span factor =32

Q: Q.3/state the rotating parts of DC generator.

A: There are two rotating parts of a DC Generator namely :   (1)Armature Winding.   (2)Rotor Core.…

Q: what is the reason behind parallel operation of alternators?

A: Electric power networks are linked together for reliable, cost-effective operation. Synchronous…

Q: What should be done to keep the alternator terminal voltage constant at different loads as the…

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Q: and synchronous reactance per phase = 2.252. Find the % regulation for a power factor of 0.707…

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Q: In 36 slots,4pole,3phase alternator,the winding pitch is 7 slots,the electricala ngle by which the…

A: Alternator convert mechanical energy in to electrical energy. Alternator has two part rotor and…

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.