Why can’t Synchronous motor start by itself. What techniques are available to start a synchronous motor?

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: Application of Synchronous motor ?

A: Some application of Synchronous machine: Power factor improvement Voltage regulation Constant-speed…

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

A:

Q: in Speed Control of Three Phases I.M. by Variation of Rotor Resistance Explain why pole changing…

A: The speed control of the three-phase induction motor by the variation of rotor resistance: - The…

Q: What is the synchronous speed of a motor that has four poles and is operating on 60 Hz?

A: Given:  Number of poles P = 4 Frequency F = 60 Hz We need to determine the synchronous speed of a…

Q: 6-1. What is the difference bet ween a synchronous motor and a synchronous generator? 6-2. What is…

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

Q: Q/ How does the synchronous motor work? Why can't the synchronous motor start on its own?

A: This is a good question based on simple electrical machine. And the chapter is basic circuit of…

Q: Why is it not a good idea to use circuit protection devices to protect large motors from overload…

A: According to the question we have to discuss why it is not good idea to use circuit protection…

Q: Is it possible for load of a wye connected induction motor during the blocked rotor test to be…

A: In the blocked rotor test, a low voltage is applied which circulates a full load armature current…

Q: Attempt the following: a- Draw and explain a completes equivalent circuit of three phase induction…

A: a

Q: Why induction motor cannot run on synchronous speed? Explain using slip.

A: In an engine, simultaneous speed is the speed at which the attractive field pivots. Contingent upon…

Q: Name three characteristics that make the synchronous motor different from an induction motor?

A:

Q: Synchronous motor when the load is taken completely while working at full load in all properties…

A: Synchronous motor is constant speed motor always rotates at synchronous speed Ns =120fP

Q: lue increase as the torque value increases?

A: An asynchronous motor is also known as an induction motor. A three-phase balanced supply is provided…

Q: What determines when a synchronour motor is at normal excitation?

A:

Q: Explain synchronous speed.

A: Synchronous speed is defined as the speed for which the magnetic field of the 3-phase motor…

Q: In Synchronous Motor Operation How the regulating characteristics can be obtained from V curve?

A: The V curve is the graph between the stator current and the field current for different loads on the…

Q: Why is it that the induction motor operate less than the synchronous speed?

A: The synchronous speed of an Induction motor can be explained as the speed of rotating magnetic field…

Q: Why must a synchronous motor never be started when DC excitation is applied to the rotor?

A: A synchronous motor never be start when DC excitation is applied to the router because

Q: Why do large induction motors sometimes cause a dip in the supply system voltage when they are…

A: The reasons for the Voltage sag or Dip in the Voltage : 1.The Large Induction motors usually draws 6…

Q: 3- Why does a cumulatively compound D.C motor at light load behave approximately as a shunt D.C and…

A: The torque-speed (c/s) of a cumulatively compound D.C motor At light loads, the series field has a…

Q: Explain the methods of starting asynchronous motors and drawing Star / Delta starting, also explain…

A: The AC motor are classified on the basis of their speed of rotation. The AC motors can be…

Q: Which dc motor is used in fan?

A: In the fans, DC and AC, both motors are used depending on their use. In AC fans, mainly single-phase…

Q: What is synchronous speed?

A: This Question is from Electrical Machine.

Q: What effect does varying the DC incitation have on the stator currents of a synchronous motor?

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

Q: Can an induction motor operate at the synchronous speed?Why?

A:

Q: is the following correct? True or false? In order to change the rotation direction of the…

A: In order to change the rotation direction of the asynchronous motor, it can be reversed by any two…

Q: What is the typical speed regulation on a synchronous motor?

A: Consider that the synchronous motor is a motor that rotates with synchronous speed.

Q: What is meant by generator black-start capability, why is it needed, and what types of generators…

A: When a station is allowed to generate their own power for enabling it to restart after the fault in…

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

A: The single-phase induction motor is not self-starting if we don't have auxiliary winding. The main…

Q: If a 60-Hz synchronous motor is to be operated at 50 Hz, will its synchronous reactance be the same…

A: Synchronous motor runs at synchronous speed.

Q: Why is there a need to stop medium motors before reversing its direction in a control circuit?

A: To explain the given condition

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

A: This is belongs to synchronous motors

Q: What is difference is synchronous and a synchronous motor?

A: There are many differences between synchronous motor and asynchronous motor. 1. In synchronous motor…

Q: Solve the following questions and problems: 1) Explain the principle of operation of a synchronous…

A: (1) Principle of operation od a Synchronous motor:Synchronous motor is a doubly excited machine. It…

Q: Questions: 1-why does the speed fall slightly when the d.c. shunt motor is loaded?

A: Since you have posted multiple questions and not specified which question to solve. We will solve…

Q: What are the causes of faulty starting of a synchronous motor ? A synchronous motor starts as usual…

A: The causes of faulty starting of a synchronous motor: Voltage may be too low, at least half voltage…

Q: Attempt the following: a- Draw and explain a completes equivalent circet of Single phase induction…

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

Q: Why the dc shunt motor running at the infinity speed?

A: In this question , we will write about how dc shunt motor running at infinite speed..

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: .    What is the effect of the field excitation to the back emf of the synchronous motor?

A: Synchronous motor- It is an electric motor which is operated at AC supply. As the name suggest, its…

Q: in Blocked rotor test of three phase Induction motor. Which loss in the machine is significant in…

A: Blocked rotor test of three phase induction motor is used to obtain the series parameters of the…

Q: Synchronous motor idle and load operation same as excitation (Iu) current Does it show specifics?

A: Synchronous Motor- The synchronous machine may be used as a motor or power factor compensator…

Q: a) Does the slip increase as the load increases in an asynchronous motor? What is the reason of…

A: Ans (a) In induction motor , Rotating magnetic field of a stator winding passes through a rotor…

Q: What is the reason why a synchronous motor can be found running at no load?

A: we need to explain synchronous motor.

Q: Explain why pole changing method of speed control cannot be used for slip ring induction motor?

A: