Explain in detail how AC motors develop a rotating magnetic field.

Q: Explain the principles of DC motors, including the DC permanent magnet motor and how it can  have…

A: PMDC motor: This is a DC motor having a permanent magnet pole. This motor has no field is present,…

Q: A permanent magnet dc motor has a rotor radius of 1.3 cm, magnetic thickness of 0.25cm, and a gap…

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

Q: In a DC motor, why forces are generated for parts of the loop and not for other parts of the loop.…

A: Answer -

Q: Provide your recommendations for reduction of magnetic losses in an induction motor.

A: The energy expended when an alternative magnetic field works on a Ferro-or ferrimagnetic material,…

Q: Speed of the motor is inversely proportional to _________________. a.flux b.Supply voltage…

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Q: The direction of electro-magnetic torque developed in the armature of a DC machine can be reversed…

A: In this question we will answer how direction of torque in DC machine can be reversed ..

Q: 15.a. Which one of the following types of motors is not normally reversible? A. Universal motor B.…

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Q: A 8-pole d.c. motor has a wave-wound armature with 870 conductors. The useful flux per pole is 46…

A: According to the question we have to calculate the value of Torque.

Q: A self-excited DC generator has lost its residual magnetism and therefore cannot work (cannot…

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Q: How the rotating magnetic field is produced. Explain its importance in the operation of an Induction…

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Q: a. Explain how a rotating magnetic field is produced in a three-phase induction motor. b. Explain…

A: a) Rotating Magnetic Field When a three-phase supply is applied to a three-phase distributed…

Q: Name the principal parts of a rotating electrical machine

A: Any electrical machine has divided into mainly two parts one is stator part and another is rotor…

Q: a(an) ____ motor operates on the principle that like magnetic poles repel

A: The solution is given below  This question is from electrical machines.

Q: A 4 pole, wave wound, dc series motor is driven at 1600 rpm and takes armature current of 60A. The…

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Q: Induction motor is running at a speed Select one: O a. Equal or higher than the rotating magnetic…

A: Choose the correct options Induction motor is running at a speed ?       *Multiple questions*as per…

Q: 2- A two-pole motor is operating at 50 Hz. Determine the synchronous speed of the rotating magnetic…

A: Given: A motor with Poles, P=2 Frequency, f=50 Hz

Q: WWhat is DC motor? Derive its torque equation.

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Q: How is a rotating magnetic field produced in a three-phase induction motor? Explain it with the help…

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Q: Develop a table showing the speed of magnetic field rotation in ac machine of 2, 4, 6, 8, 10, 12,…

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Q: electromagnetism, motors and back emf.

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Q: Describe the output of the AC generator and sketch the output waveform as shown from the…

A: There are several question's and it is mentioned which question to do and we have asked to do one…

Q: The factors effecting the speed of dc motor are The flux p and the voltage across the armature the…

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Q: A six-pole dc machine has an armature connected as a lap winding. The armature has 32 slots with six…

A: Above question is based on DC generator, the major classification of DC generator are: Series…

Q: Q.36 Name three factors that determine the torque produced by an induction motor. Select one or…

A: Those  three factors are following in which torque depends upon:- i) the magnitude of rotor current.…

Q: Q25) i) What are the factors that the induced voltage in three phase induction motor depends upon…

A: Factors that the induced voltage in three phase induction motor depends upon : 1. Magnitude of…

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: b) A Four pole, wave wound DC series motor operating at 120V has 100 conductors on its armature. It…

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Q: 38. A) Armature reaction in a DC generator can be compensated for by inserting__________ between the…

A: In this we need to tell the correct option for the given blank space.

Q: The stationary windings or magnets of a DC motor are called the

A: In the DC motor, there are stationary windings are also called magnet of the DC motor.

Q: Why do we need to supply DC field current instead of AC in an Alternator rotor? Explain briefly your…

A: Explanation is given in step -2

Q: Q7/ What are the advantages and disadvantages of the permanent magnets dc motors?

A: Permanent magnet DC motors produce a flus that is constant unlike an electromagnetic excited DC…

Q: (a) Describe a single wire DC motor with the help of a diagram.

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Q: Speed of the motor is inversely proportional to _________________. a. flux b. Supply voltage c.…

A: In this question we will write motor speed....

Q: A 900 rpm, 4 pole wave wound shunt motor takes 300 A. The flux per pole is 0.02 Wb and the armature…

A: A 900 rpm, 4 pole wave wound shunt motor takes 300 A. The flux per pole is 0.02 Wb and the armature…

Q: Explain how a rotating magnetic field is produced when a three phase supply is connected across the…

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Q: A self excited DC generator has no residual flux, comment how it can be excited

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Q: How would you reverse the polarity of a self-excited DC generator

A: In this question we will write How would you reverse the polarity of a self-excited DC…

Q: A 6-pole d.c. motor has a wave-wound armature with 900 conductors. The useful flux per pole is 30…

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Q: in a motor that has a rotating magnetic field, the speed of that magnetic field is referred to as

A: (The motor is an electromechanical device that converts electrical energy into mechanical energy)…

Q: SUBJECT = ELECTRIC MACHINE When an Induction motor starts, the rotor follows the direction of the…

A: Solution : When a three-phase stator winding is driven by a 3 phase power source, a rotating…

Q: A six-pole DC generator has an armature winding with 540 conductors connected in six parallel paths.…

A: Need to find generated voltage with given conditions here flux is given in Maxwell so convert it in…

Q: The terminal voltage of a given generator .4 :depends on these two things )1 نقطة( .The field…

A: Given  The terminal voltage of the given generator

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…

Q: Mention factors causing a permanent magnet generator not to generate emf

A: The reasons causing a permanent magnet generator not to generate emf are as follows:

Stator and Rotor Magnetic Field

The stator and rotor magnetic field is the resulting magnetic field generated by a system of coils that are symmetrically aligned. They are supplied with polyphase currents. The magnetic field is generated by poly-phase (two or more phases) current or single-phase current. In the latter case, two field stator windings are supplied and two resulting electromagnetic fields are generated beyond the stage.