Why does the magnetization curve of D.C. shunt machine bend as the field current increases

Q: 5.2 Using cross-sectional diagrams of a 4-pole machine, show the flux distributions resulting from…

A: The main field is produced by the main field poles itself. The armature field is produced when…

Q: The axial length of the pole faces of an 8-pole, 250-Volt, 30 kW generator is 12.25 cm and the pole…

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Q: 3-2. Develop a table showing the speed of magnetic field rotation in ac machines of 2, 4, 6, 8, 10,…

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Q: 1- Two generators A and B have 6 poles cach. Generator A has wave wound armature while generator B…

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Q: 2 For self-excited generator, why isn't max. generation voltage generated as soon as the Armature…

A: As per the honor code I will attempt only first question (question 2). Kindly repost the other…

Q: A 4-pole d.c. generator has 1200 armature conductors and generates 250 V on open círcuit when unning…

A: we need to calculate average magnetic flux density.

Q: Find the part of the DC machine collects the current from armature conductors? a. Yoke b. Commutator…

A: Need  to find the correct option

Q: 21. The three factors which cause decrease in the terminal voltage of a shunt generator are (a)…

A: the three factors which cause decrease in the terminal voltage of a shunt generator are: if field…

Q: 5.3 Using developed diagrams of a 2-pole machine rotating counterclockwise, show that: a. Armature…

A: A main field flux is produced with the main field poles. As soon as the armature current starts…

Q: 5. What is the function of armature in a DC generator?

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Q: Why does the magnetization curve of D.C. shunt machine bend as the field current increases?

A: magnetization curve of the DC shunt machine is the curve between the armature voltage versus the…

Q: 2 When the synchronous generator operates with pure inductive load* „ it does not exist armature…

A: Synchronous generator: This is an electromechanical machine. This machine runs at synchronous speed…

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: For self-excited generator, why isn't max. generation voltage generated as soon as the Armature…

A: Self-excited generators are modern DC generators with field coils area unit that start with the…

Q: 2. What is the relationship between the generator's excitation Current (4) and generator's field…

A: Need to find relationship between generator excitation current and generator  field flux

Q: Explain distribution of flux and magnetic motive force in AC machines?

A: To generate the Torque for rotation in the Motor or to generate induced emf in the generator, a…

Q: The negative field intensity required to force the residual magnetism is known as ?

A: Corceive force .

Q: Discuss the saturation of a permanent magnet generator

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Q: Explain the term air-gap power or power developed in the rotor and shaft power. How these terms are…

A: Induction motor  Explain Air gap power ?  Power developed?  Shaft rotor power?

Q: 3. List the losses in SPIM. 4. What are types of SPIM. 5. What are the disadvantages of SPIM. 6.…

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Q: Explain how the magnetization curve is measured for a dc machine.

A: The magnetization curve is the curve which gives the relation between open circuit armature terminal…

Q: Using developed diagrams of a 2-pole machine rotating counterclockwise, show that : a) Armature…

A: There is a main field flux produced in the electrical machine due to the field poles. As soon as…

Q: QI: Design 4 pole de lap generator has 12 slots ? Show the duration currents in armature conductor,

A: Steps to develop a winding diagram  1. Draw 12 coil sides and number them. 2. Since it is a single…

Q: Derive an expression for the rotor copper loss in terms of slip and input to the rotor?

A: The solution is as follows.

Q: 5.4 Using cross-sectional diagrams of a 2-pole machine, show that: a. In a motor, brush shift in the…

A: Cross section of DC generator,

Q: Find the part of the DC machine part spreads the flux in the air gap of the DC generator? a.…

A: Function of magnetic poles in dc machine:-  Provides mechanical support to the field windings…

Q: Questions: Permanent magnet generator Sketch the curve of Voltage vs % Speed.

A: In permanent magnet generator voltage is directly proportional to speed.

Q: 5.3 Using developed diagrams of a 2-pole machine rotating counterclockwise, show that: a. Armature…

A: Dears student here am attaching for  generator ..the only difference for motor is opposite direction…

Q: 1- Based on the exercise, what do you understood about residual magnetism?   2- What is the…

A: Given observation table is This is the result to obtain the open circuit characteristics of a DC…

Q: Explain the concept of electrical degrees. How is the electrical angle of the voltage in a rotor…

A: we need to explain the concept of electrical degrees. and How is the electrical angle of the voltage…

Q: Q1/ A/ Discuss the following statement "determination the precise axis of magnetic neutral for…

A: Q 1 A) It is necessary that brushes should be placed on Magnetic neutral axis (MNA) to avoid the…

Q: Derive an expression for the rotor copper loss in terms of slip and input to the rotor?

A: The explanation is as follows.

Q: - The DC shunt generator will not build-up an e.m.f. if * a) The direction of armature rotation is…

A: condition for the build up of a shunt generator There must be some residual magnetism in the…

Q: What do you call the plot of the internally generated voltage vs. field current at a given…

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Q: Explain the types of dc generator and motors on the basis of excitation.

A: Types of DC Machine Shunt DC Machine Series DC machine Long Shunt compound DC machine Short shunt…

Q: Explain the methods for creating residual magnetism in generator whose field poles were…

A: Residual Magnetism- A small amount of magnetism is retained by the soft iron of electromagnet known…

Q: Calculate the armature conductors of a d.c generator, if the emf induced is 220 V, armature has 10…

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Q: What factors are you going to consider in creating a generator that can induced a large amount of…

A: Electrical machines can be either generator, transformer or motors. They can be either Ac machines…

Q: Draw the block diagram of a DC Generator?

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Q: A DC shunt generator is developing rated terminal voltage at some speed. For this generator, (i) If…

A: Need to find  correct statement for dc shunt generator

Q: True or False: In a dc generator, the armature current is a direct current

A: There are two source of magnetic flux that are present in DC machine, armature flux and main field…

Q: Which part of a DC Machine that produces the magnetic flux when the field winding is excited? a.…

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Q: What are the reasons for the decrease in the voltage of the independent excitation generator during…

A: DC Generator: DC Generator is an electromechanical device which converts mechanical energy to…

Winding and Constructions

Alternating Current (AC) winding is generally of the 3-phase type due to the inherent advantages of the 3-phase machine. Armature coils must be connected to the yield balance (equivalent in magnitude and 2/3 of the series phase difference of the rod) 3-phase electromotive forces (emf). The armature should be divided into step-bands to start with slots around the perimeter.In the construction of AC machines, the frame is used as an external protective shield to protect it from environmental conditions. The frame also serves as the outer perimeter, allowing the interior to be easily placed. The static state section of the devices is the stator winding attached stator.