What is short circuit characteristics of (s.c.c) of an alternator Explain? Explain the effect of incraese in field current on the genreated voltage of alternator?

Q: A three-phase star-connected alternator working at 1800 KVA,50 Hz,2200 V, has an armature dc…

A: Given Three-phase star connected alternator at1800 KVA,50 Hz,2200 vThe armature dc resistance 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: 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: 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: What should be done for the altemator to take active power (load) on synchronous alternators? Devir…

A: To take active power on synchronous alternator

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

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

Q: Explain the characteristic of alternator running under load.

A:

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: How do you define "static stability limit of an alternator

A: The term stability refers to the ability of a system to be in stable condition even after occurrence…

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: What is difference in alternator and generator?

A: Difference between alternator and generator

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: What is the effect of the capacitive load to the terminal voltage of the alternator?

A: It is known that capacitive load supplies leading reactive power in any circuit. and the apparent…

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: 2. Calculate the power produced by the generator. 3. What are the main features of the series field…

A: Power produced by generator

Q: Harmonics generated in a machine related to the distribution of windings is Answer:

A: Harmonics generated in a machine related to the distribution of winding is

Q: The dc armature resistance of delta-connected alternator measured across its two terminal is 0.8…

A:

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: 16. In an alternator, what is pitch factor? 17. The power factor of the alternator will depend on…

A:

Q: 2. Connect the field windings and brushes below to form a separately excited DC generator. Show also…

A: A self-excited DC shunt motor, also known as a shunt wound DC motor, is a form of self-excited DC…

Q: Harmonics generated in a machine related to the distribution of windings is B**... Answer.

A: Harmonics generated in machine are a distortion of the normal electrical current waveform, generally…

Q: Voltage (Voltage) Regulator Alternators without Excitation Machine (Constant Voltage Generators)…

A: Voltage Regulators: A voltage regulator is an electrical or electronic device that can hold…

Q: construct an winding diagram with -4 poles -26 conductors -double layer -simplex wave winding, 2…

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 is the conclusion for the concepts of rotating amature and rotating field in an alternator?

A: There are two types of alternators are used one is rotating armature type and the other one is…

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 220V series generator has an armature resistance of 0.04Ω. If the generated emf is 230V and the…

A:

Q: Q1: A voltage Vin(t) from a function generator shown in Figurel is displayed on an oscilloscope.…

A: The AC coupling in the oscilloscope will filter out the DC component present in the input signal…

Q: Explain in details how the separately-excited de generator works?

A:

Q: EXPLAIN BRIEFLY THE ALTERNATOR USED IN GENERATING STATION?

A:

Q: 3- A 3-phase, 8-pole, star-connected alternator has 72 slots on the armature. Each slot has 12…

A: Given, a 3-phase star connected alternator having Number of poles, P = 8 Number of slots, S =72…

Q: Q choose the correct answer: 1-Brushless excitation system consisting of.... a- Stator field winding…

A: Given

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: What are the different applications of split-phase motor?

A: SPLIT-PHASE TYPE MOTORS: The split phase type motors is most widely used for single voltage…

Q: A 3-phase, 8-pole, star-connected alternator has 72 slots on the armature, Each slot has 12…

A:

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

A:

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: 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: Q3\\ A 3-phase, 8-pole, star-connected alternator has 72 slots on the armature. Each slot has 12…

A: In this question we will find distribution factor and pitch factor....

Q: 49. Explain carefully how the resistance test is performed on an alternator. 60. What is ineant by…

A: A generator is an electrical machine which converts mechanical energy to electrical energy. It is…

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

A:

Q: What are the different ways to supply DC power to rotor of an alternator? Which method is superior…

A: The different ways to supply DC current to the rotor of the alternator are as follows:  1-DC-DC…

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.