DC motor. How the flu

Q: Discuss with aid of diagrams and equations the effect of armature reaction on the generated voltage…

A: Armature reaction: In DC generator the armature current induces the armature flux and the main poles…

Q: Indicate the parts of DC motor illustrated below.

A:

Q: A 4-pole dc generator is running at 1500 rpm. The frequency of current in the armature winding is ?

A: Given, A DC generator having Number of poles, P= 4 Synchronous speed, Ns= 1500 rpm

Q: rated load, a shunt motor draws an armature current of 50A from a 230V dc mains while  running at…

A: Please refer the attached images for the complete answer..

Q: Q1) The induced voltage of a shunt generator is 254 V. When the machine is loaded, the terminal…

A:

Q: Q/ Compare the Cylindrical pole rotor and salient pole rotor in a synchronous machine poles, speed,…

A: Cylindrical pole rotor: 1. Poles: The poles of a cylindrical rotor are arranged with in the rotor…

Q: Field winding resistance of DC shunt motor compared to its armature resistance is Equal Samller…

A:

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: Why is a large number of conductors on the armature in a DC Motor is desirable?

A:

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

A: The flux generated by the main field acting alone will move from north to south in the air gap. The…

Q: what is the effect of armature reaction in on the speed of the motor?

A: The solution can be achieved as follws.

Q: d- How do you can control their speed? State their applications. e- Compare between the brushed and…

A: (d) In speed control of DC Motor, There are three method to control the speed. Field weakning or…

Q: What are the methods of speed control of the DC motor in Electrical Engineering? Explain them.

A:

Q: (i) Explain the armature reaction in DC motor. How the flux is distorted by armature reaction? How…

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

Q: Q. Answer the following for DC Machines: (i) Explain the armature reaction in DC motor. How the flux…

A: NOTE:- According to company policy, only 3 subparts can be answered at a time. So repost the…

Q: what are the advantages of speed control by flux control method?

A: The flux control method is ideal for smooth performance, cost-effectiveness and steady output.

Q: What is the mathematical model of a DC motor with describing variables: armature circuit voltage and…

A: A DC motor is an electromechanical device that converts electrical energy to mechanical energy. The…

Q: The permanent magnet machines (PMM) known as "Brushless Permanent Magnet Motors", "Brushless DC…

A: The brushless dc motors and brushless permanent magnet motor are the same things.  There is a…

Q: (B) / Explain the speed control methods of DC shunt motor.

A: In speed control of DC shunt Motor, As, N∝V-IaRaϕN is speed, V is supply voltage, Ia is armature…

Q: Armature copper loss of DC motor is constant with the load. Select one: True False

A: Losses occur in all types of machines. The losses in a DC machine are divided into : 1.Copper loss…

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: Is a magnetization curve needed for a permanent-magnet dc motor? Explain.

A: The magnetization curve plays a very important role to predict the working of DC machines under…

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: Discuss the advantages of flux weakening operating regime in a DC motor.

A:

Q: The characteristic (Speed versus armature current) of a dc shunt motor is known as the electrical…

A: The electrical characteristics are,

Q: (i) Explain the armature reaction in DC motor. How the flux is distorted by armature reaction? How…

A: The undesirable effect of armature flux on the main field flux distribution in the air gap is called…

Q: What is the principle difference between synchronous and and an induction machine?

A: This question is from "Electrical Machines". Under which we are going to study the main differences…

Q: Examine the saddle torque of induction motors and the effect of different groove structures on the…

A:

Q: A de series generator speed of (800 rpm), the terminal voltage is (300 ) on load, armature…

A:

Q: Draw and explain the block diagram for speed control of an Induction machine by slip power control.…

A: SLIP POWER RECOVERY / CASCADING OF IM: Air-gap power as two components Electrical (SPg) Mechanical…

Q: B/ Explain the skewing of rotor in induction machine.

A: There are two types of harmonics present in the induction motor 1) Time harmonics.  2) Space…

Q: what are the advantages of speed control by flux control method? *

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: What is exciter in a DC shunt generator? How the emf induced in armature of generator can be control…

A: Exciter in Generator: The exciter is nothing but a coil, it is used to create a magnetic field. 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: 2. What are the different types of dc motor? 3. What is the basic principle of working of DC motor?

A:

Q: S5. b) By defining the motor, write down the types of DC motors?

A: Given To define Motor and write types of DC motors.

Q: How the field control used in series dc motor

A: For the DC series motor speed equation is given by  N=Ebk∅ .............(1)where Eb=V-IaRa= back emf…

Q: A 200V dc shunt generator can deliver 10 kW at half load with efficiency of 83 %. If the armature…

A: The circuit diagram of DC shunt generator is shown below: It is given that: Terminal Voltage=V=200…

Q: Explain with vector diagrams and a graph the effect of excitation on armature current and power…

A: We will refer the concept of effect of excitation on armature current and power factor.

Q: c) Discuss how armature resistance could be used to control the speed of a DC motor.

A:

Q: Armature reaction is the of the air gap flux that results from interaction of the magnetic field…

A: This passage is about the armature reaction that occurs in the D.C. machine.

Q: series motor, the armature torque is directly proportional to the armature current" True False

A: In dc series motor since the field winding is also connected in series with armature the flux is…

Q: O Explain the reason how AC Commutator motor is operated with DC or single phase AC. e Explain how…

A: Commutator is feature of DC motor. However, AC motor with wound rotor with brushes and commutator…

Q: The armature terminal voltage of a separately-excited DC motor increases while the field current and…

A: DC motors:- Direct current motors are used for the conversion of electrical energy into mechanical…

Q: What is Armature reaction? Explain the conditions when armature reaction can be neglected for…

A: The effect of armature flux on the flux produced by the rotor field poles is called armature…

Q: The armature of a 8 pole d.c. shunt motor has a lap connected armature winding with 1000 conductors…

A: Consider the given values, The No load flux is given as, ϕNL=10 mWb. Due to armature reaction, the…

DC Series Motors

A DC motor is a type of electric motor which converts electric energy into mechanical energy. The forces that are produced by the magnetic field are what those common types of motors rely upon. Either electro-mechanical or electronic, all types of DC motors have some internal mechanism to change the current direction in part of the DC motors. As the DC motors could be powered from existing DC lighting power distribution systems, these motors were the first form of motors widely used. By changing the strength of the current in its field winding or by using a variable supply voltage, the speed of the DC motors can be controlled over a wide range.