Explain the characteristic of alternator running under load.

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: What are the main effects of losses on the performance of the alternator?

A: Alternator- An alternator is an electrical machine that can convert mechanical input to electrical…

Q: A 3-phase, 12-pole, star-connected alternator has 180 slots with 10 conductors per slot and the…

A: Per phase Emf induced in alternator  = 4.44 ×frequency ×flux per pole × per phase turns winding…

Q: WHat is shunt reactor and its use in the power system. Explain in short.

A: The inductive current element is considered as the shunt reactor and it is connected in between the…

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 is short circuit characteristics of (s.c.c) of an alternator Explain? Explain the effect of…

A: According to the bartleby's guideline we should solve only one question so please post another…

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: i. What are different types of rotors used in an alternator?

A: There  are mainly two types of rotors used in alternator.

Q: What is the freq. of a 10-pole alternator when running at 360 rpm? (b) At what speeds should a…

A:

Q: DIFFERENTIATE DC GENERATOR OVER AC GENERATOR ACCORDING TO ITS CONSTRUCTION.

A:

Q: A 25 KVA 220volt three phase alternator delivers rated kilovolt-amperes at a power factor of 0.84.…

A: It is given that: S=25KVAVo=220 voltcosϕ=0.84Rt=0.18ohmsPf+w=460WPcore=610 WIf=9.3 AVf=115 volt

Q: Q Advantages of rotating field in an Alternator? (Write five point with Explanation)

A: An alternator is a machine that transforms mechanical energy into alternating current (AC)…

Q: Q 5. A wave-wound armature of a 6-pole generator has 51 slots. Each slot contains 20 conductors. The…

A: The solution can be achieved as follows.

Q: What is difference in alternator and generator?

A: Difference between alternator and generator

Q: For an alternator that underwent the typical tests, connected in a star, voltage and current data…

A:

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

A:

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

A: Introduction:  In the separately excited generator field winding is not connected with armature…

Q: There are 90 slots in the armature of a 3-phase, 50 Hz., 6 pole, star connected alternator. Winding…

A:

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: introduction an explanation about voltage regulation of an alternator

A:

Q: The ac armature winding of an alternator isA. Always Star connected. B. Always delta connected

A: The solution is provided in the following section:

Q: Why does an alternator's voltage rise when it is loaded down with a leading load!

A: A 3-phase alternator is a synchronous machine that converts mechanical power into 3-phase power…

Q: An alternator has 8 poles. (a) At what speed must the machine be driven to develop 75 cycles? 40…

A:

Q: Given field excitation at 10A in an alternator that exerts current of 150A (short circuit) and a…

A: The solution is given below

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

A:

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: WHAT ARE THE TWO TYPES OF AN ALTERNATOR WITH REGARDS TO THE CONSTRUCTIONS AND ITS APPLICATION

A: The solution is given below

Q: EXPLAIN BRIEFLY THE ALTERNATOR USED IN GENERATING STATION?

A:

Q: Why do we need to have an Exciter in a complete set-up of an Alternator system operations? Explain…

A: A device known as an exciter or a DC generator relay induces the DC machine-held excitation to…

Q: A bipolar AC generator is running at 3,600 RPM . What will be the frequency of the voltage wave…

A: solve prob..

Q: three-phase ,50 Hz,10-pole alternator has 240 stator slots with 10 conductors per slot .If the coil…

A: The per phase induced emf of an alternator is given by: Where; E= Per phase induced voltage Kp=…

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: 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 4 pole, 50 Hz star connected alternator has 15 slots per pole and eachslot has 10 conductors. All…

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: List the four basic faults which can prevent a self excited generator to buildup voltage.

A: We can define fault as imperfection in electrical system due to which current may get deviated from…

Q: Introduction and explanation about alternator regulation

A:

Q: Find the terminal voltage (in volts) on open circuit for a star-connected 6-Pole alternator having a…

A: In this question,   We need to Find the terminal voltage (in volts) on open circuit for a…

Q: The winding of a 4-pole alternator having 36 slots and coils and a coil span of 1 to 8. What is the…

A: The solution is given below

Q: What is the effect of the field excitation to the short circuit current of the alternator?

A: The short circuit current of alternator is given as: Ia=EfjXs Here we have neglected armature…

Q: What is the relation between speed of prime mover and number of poles of an alternator?

A: The speed of the prime mover is directly proportional to the frequency of the system and inversely…

Q: WHAT ARE THE DIFFERENT TYPES OF PRIME MOVER USED TO DRIVE THE ALTERNATOR IN GENERATING PLANT?

A: Alternator is a synchronous generator which provides the electrical power by getting the energy from…

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…

A:

Q: 1. Thyristor switched reactor(TSR) for power factor improvement (i need explained if possible)

A: 1. Thyristor switched reactor(TSR) for power factor improvement

Q: A basic one-loop dc generator is rotated at 60 rps. How many times each second does the dc output…

A: The frequency of the generator is given as: f=60rev/s The induced voltage for three rotations of the…

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.