List several methods for starting synchronous motors.

Q: Can single phase induction motor be self-started? Explain the operation of a split phase single…

A: No, the single-phase induction motor cannot be self-started if the auxiliary winding stator winding…

Q: List three methods for controlling the speed of a dc motor.

A: The three methods for controlling dc motor are as follows: Flux control Voltage control Armature…

Q: A certain 480-V-rms delta-connected synchronous motor operates with zero developed power and draws a…

A: Write the given values in the question.

Q: Discuss the variable-speed operating regimes for a synchronous motor.

A: We need to discuss the variable-speed operating regimes for a synchronous motor.

Q: List three methods that can be used to control the speed of dc motors. Which of these apply to…

A: Methods by which we can control the speed of Dc motor are given as follows;• Armature Resistance…

Q: 2)List the methods of speed control of three phase induction motor from both stator and rotor sides?

A: Since you posted the multiple question so I solve 2nd questions for you   List of speed control from…

Q: a. Explain the principle of operation of a shunt DC motor b. Give a brief description of a…

A: (a). Due to the current flowing in the armature winding, we have magnetic flux. The field winding…

Q: Explain why an induction motor can not run at synchronous speed?

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Q: What is the factor that enables the synchronous motor to operate at different electrical load…

A: Synchronous motor: The rotor of the synchronous motor rotates normally at the speed of the revolving…

Q: E-Effect of excitation on armature current and power factor in synchronous motor.

A: CONDITIONS:- Overexcited condition- overexcited condition implies that If is higher than rated value…

Q: A synchronous motor is running at 75 percent of rated load with unity power factor. If the load…

A:

Q: Briefly explain the methods of starting synchronous motors.  please write it with computer

A: Starting of synchronous Motors:   A synchronous Motor is not a self starting. It can be started by…

Q: DEGREE: ELECTRICAL ENGINEERING  SUBJECT/COURSE: AC MACHINES   Answer the following questions…

A: A) For starting of a synchronous motor a power supply is must needed which supply the power to rotor…

Q: 1-transfer function of DC shunt motors (step by step).

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Field divertor method of speed control in DC series motor is used for (estimated time 1 minute) a.…

A: In this question, Choose the correct option Field divertor method of speed control in DC series…

Q: 1. How we can be changed the speed of a synchronous motor?

A: Given :   Note : It is the kind notice that according to the guidelines of the company the questions…

Q: Explain the operation of a synchronous motor as a synchronous condenser

A: Synchronous Condenser is otherwise called Synchronous Compensator or Synchronous Phase Modifier. A…

Q: A 3-phase, star connected 400-V synchronous motor takes a power input of 5472 watts at rated…

A: We have a 3-phase star connected synchronous motor which takes 5472 W at rated voltage. Synchronous…

Q: Define the following AC Motors, the principles of operation and uses 1. Synchronous Motors 2.…

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Q: What will be the effect of increasing the mechanical load on a synchronous motor? Assume the field…

A: A synchronous motor is a synchronous machine that converts electrical power to mechanical power at a…

Q: Q: I need an Introduction for my report about this experiment : Speed control of seperately Excilted…

A:

Q: A 440V, single-phase synchronous motor is drawing a line current of 48A at 0.92 pf lagging. This…

A:

Q: explain any one method of speed control of Induction motor with respect to rotor side with diagram

A: Speed control of induction motor Rotor resistance control-This method is used for slip ring…

Q: With regard to the Methods of starting 3-phase induction motors, what are the disadvantages and…

A: The explanation is as follows.

Q: Briefly explain why a synchronous motor requires starting mechanism. Is there any starting problem…

A: The synchronous motor requires a starting mechanism because; - over a certain measure, synchronous…

Q: Outline the locked rotor and no load tests for an induction motor

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Draw and explain the power flow diagram of Induction machine from motor input to mechanical power…

A: Power flow of induction motor: Power flow diagram of Induction Motor discloses the data given to the…

Q: 1-transfer function of DC shunt motors (step by step

A: Note: We are authorized to answer the first question since the exact one wasn’t specified. Please…

Q: Briefly explain stator frequency speed control method of induction motor

A: The speed control of an induction motor is done by varying synchronous speed. The synchronous speed…

Q: Discus

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Q: Suggest a suitable method to raise the speed of a de shunt motor

A: The speed of the shunt motor can be controlled in two ways.   1) Armature voltage control: You…

Q: b) Explain the repulsion-start type universal motors.

A: Here the repulsion-start type universal motor operation will be discussed, along with the advantages…

Q: List any four industrial applications of AC motors.

A: There are various types of AC motors used in industries, namely, induction motor, synchronous motor,…

Q: Explain the effect of varying excitation upon the armature current and power factor of a three-phase…

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Q: With suitable diagram explain the operation of a permanent magnet stepper motor.

A: The permanent magnet stepper motor is an electromechanical energy change device, which converts…

Q: How can the speed of a shunt DC motor be controlled

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Q: 1. How can you reverse the direction of rotation of a synchronous motor? 2. What effect does varying…

A: 1. The direction of rotation of a synchronous motor can be reversed by interchanging any two of the…

Q: 6. The major failure area of a typical wound-field and wound-armature DC motor is A. brush wear and…

A: In DC machine, major problems are due to brushes.

Q: 4. What advantage you can obtain from an over excited synchronous motor at no load?

A: Over Excited Synchronous Motor If DC field excitation of  synchronous motor is such that back EMF…

Q: A synchronous motor with negligible armature resistance operates at a nominal frequency of 25…

A: Given: At Nominal Frequency F , Load angle =25 degree   At increased frequency of 15 % of F , then…

Q: 3. How does exceeding the pull – out torque affect the synchronous motor? 4. How can a self- start…

A: 3. When load to be increased then the torque angle also increases until the conditions arises when…

Q: 1. When a synchronous motor is at working condition, is there induced electromotive force in the…

A: This question is belongs to synchronous motors

Q: Explain how we can use  the frequency for  speed control of the asynchronous motor. And describe the…

A: consider the given question;

Q: Speed control of shunt, series and compound DC motors *

A: Types of DC Motor control Closed loop control Speed command is estimated and compared with set…

Q: Discuss the operation of capacitor-start-and-run motors with a diagram.

A: Single phase induction motor is not self starting motor. To start this motor different methods are…

Q: A three-phase 60 Hz two-pole induction motor runs at a no-load speed of 3500 rpm and a full-load…

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Q: How can the direction of rotation of a split-phase or capacitor-start induction motor be reversed?…

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Q: Draw Torque-speed curve of a three phase induction motor and define Locked rotor torque, Pull- up…

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Q: 28/ How can the speed of a shunt dc motor be ontrolled? Explain in detail.

A:

Synchronous Motor

The synchronous motor is an AC electric type motor where at a steady-state the shaft rotation is synchronized with the supply current variable-frequency. To an integral number of AC cycles, the rotation period is exactly equal. The stator of the motor in the synchronous motor contains multi-phase AC electromagnets due to which a magnetic field is created that rotates in time with the oscillation of the line current. The rotor contains a permanent magnet and the rotor rotates in synchronization with the stator field at the same rate and provides the second synchronized magnetic field which is rotating in nature as a result. When the synchronous motor is supplied with independently excited multi-phase AC electromagnets on both the rotor and the stator, it is termed as a doubly-fed machine. The most widely used AC-type motors are the synchronous AC motor and the induction AC motors.