Why does curving the pole faces in a dc machine contribute to a smoother dc output voltage from it?
Q: The per phase dc armature resistance of an alternator is 0.5 0. The effective ac armature resistance…
A: The solution is given below
Q: Make a sketch to show the speed torque characteristics of a series, and PMDC motor
A: The permanent magnet dc motor can be characterized as an engine that incorporates a lasting magnet…
Q: types of power losses of DC motor
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Q: Illustrate the physical components of a DC motor.
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Q: What is the difference in saturation curves of the self-excited dc generator operated at rated speed…
A: The self excited generator is given as The curve which gives the connection between field current…
Q: Explain the Armature reaction in DC machines
A: Armature reaction: The DC generator has 3 main parts 1. Magnetic field system 2. Armature…
Q: (a) Explain different types of dc machine with suitable diagram (b) Explain how the commutation…
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Q: Explain the types of DC generators
A: In the question, Explain the types of DC generators.
Q: Numerical Problems 1. A four-pole, lap wound DC machine is having 500 conductors on its armature and…
A: We are authorized to answer only one question at a time since you have not mentioned which question…
Q: What are the methods of speed control of the DC motor? Explain them.
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Q: Explain speed control of a separately excited dc motor
A: Those methods are given below :- i)Field control methods: As the field gets weakened it causes…
Q: in which mode of operation of a dc machine does the interpole have the polarity of the main pole…
A: In a DC machine, the current produced by the armature is AC and needs to be converted into DC by a…
Q: Name and briefly discuss the types of power loss in a shunt-connected dc motor.
A: The various losses that are present in shunt-connected dc motor are as follows; 1) Copper and…
Q: What physical part is armature in case of DC machine? Can we design armature on stator. If yes, give…
A: In a DC machine, the rotating circuit is termed as the armature. It consists of windings and shaft…
Q: What is Commutation in DC Machines? What are the methods you will suggest to improve the commutation…
A: Commutation in DC machine and it's way to improve
Q: What are the methods of speed control of the DC motor in Electrical Engineering? Explain them.
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Q: What are the factors that affect the speed of a DC motor? *
A: speed of the DC motor can be determined using the following relation
Q: Explain theory of a separately excited DC motor.
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Q: Discuss the various types Brushless machines? Also explain their applications?
A: Various types of Brushless machines:- 1) NEMA frame brushless DC motors: - This is the most common…
Q: What is the meaning of the term “prime mover” and what is its importance in the field of electrical…
A: we need to define prime mover and its importance.
Q: Explain the term armature reaction in DC machines
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Q: (a) Deduce the equation for the emf induced in a dc machine. (b) Explain why a dc motor should not…
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Q: At what speed, in rpm, must the armature of a dc machine run to develop 572.4 kW at a torque of 4605…
A: GivenPower developed by motor=572.4 KWTorque=4605 n-m
Q: How do you define ‘back emf’ and speed regulation of a dc motor. Can you explain analytically what…
A: When the current-carrying conductor placed in a magnetic field, the torque induces on the conductor,…
Q: Why the armature of a DC machine is made of laminated silicon steel? Your answer
A: In this question ,we have to write the reason why the armature of a DC machine is made of laminated…
Q: 6.8 in which mode of operation of a dc machine does the interpole have the polarity of the main pole…
A: Need to find in which mode of operation of DC machine does the Interpole have the polarity of the…
Q: What is the function of commutator in a DC machine in generator action. Which are the different…
A: As per Bartleby guidelines we are allowed to solve only one question,please ask the rest again.
Q: What are the functions of commutator and brushes in a DC motor?
A: They have asked about the functions of commutator and brushes in DC Machine.
Q: What is a simulator? What are advantages of simulation in electrical power system?
A: The solution can be achieved as follows.
Q: Derive the EMF and Torque equation of the DC machines from the first principles.
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Q: 4) What are the conditions for voltage building up of a separately excited DC generator?
A: Conditions for voltage building up :- i)There should be sufficient residual flux at the field…
Q: Justify why an electrostatic motor cannot be operated from dc supply. Derive the expression of…
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Q: What are the two advantages of an induction tool over a resistivity one?
A: Electrical logs are one of the most significant instruments a petrophysicist can have. This is due…
Q: With the aid of a diagram as shown, explain how does AC generator work and describe the operating…
A: AC generator working: As per Faraday's law of electromagnetic induction, an EMF is induced in the…
Q: (a) Describe a single wire DC motor with the help of a diagram. (b) Illustrate the physical…
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Q: Find Power in induction motor and Power losses in Induction machines?
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Q: Define AC Generator - Why does DC excitation is used rather than AC excitation? - How does number…
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Q: Write an Introduction about DC Motors.
A: we need to explain DC motor.
Q: Describe the Characteristics, characteristics, efficiency calculations, their applications Of DC…
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Q: What is Commutation in DC Machines?
A: Commutation in DC machine : communication in DC machine is the process of converting alternating…
Q: How would you reverse the polarity of a self-excited DC generator?
A: In this question we discuss how would you reverse the polarity of a self-excited DC generator.
Q: c) Discuss how armature resistance could be used to control the speed of a DC motor.
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Q: Where is field winding mounted in a DC machine?
A: The solution is provided in the following section.
Q: What is the principal advantage of a three wire DC SYstem?
A: The three wire DC distributed system advantage is mainly 2 voltages are available. The high voltages…
Q: Make the circuit for separately excited DC motor. Explain the way to change the direction of…
A: Note: We are authorized to answer one question at a time, since you have not mentioned which…
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- What is the use of commutating poles in a DC machine?please write a characteristic table showing the advantages and disadvantages of the application of all excitation dc machines. will give like!!!What are the methods of excitation of the field windings of the DC machines? Draw the corresponding diagrams.
- Explain the Construction and Applications of DC Machines.explain flexibility in FACTS and write the ways to achieve it. despite many advantages of dc transmission it is seldom used whyWhat are the different losses taking place in a DC machine. What techniques are employed to reduce the Iron/Magnetic loss of a DC machine? Briefly state why Iron and Friction losses in a motor take place after Copper loss, whereas in generator we see the opposite order.
- Write an article describing the DC motor. Provide applications of DC motor. Provide the importance of a DC motorWhat is commutation? How can a commutator convert ac voltages on a machine’s armature to dc voltages at its terminals?Develop a simple Lap Windings for DC MACHINE. Provide a winding table Given: 4 Pole, Pole Pitch=9, progressive Windings