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:
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- Explain why synchronous motor doesn’t have any self-starting torque. Demonstrate some measures to make it self-starting. Please dont copyWhat is the reason of the "pendulum" in a synchronous motor and how can it be corrected?What is the factor that enables the synchronous motor to operate at different electrical load characteristics? explain.
- Explain a D.C synchronous motor. How is speed controlled? How is movement started ?1. How can you reverse the direction of rotation of a synchronous motor? 2. What effect does varying the DC incitation have on the stator currents of a synchronous motor? 3. How can you increase the power output of a synchronous motor? 4. What is electrodynamometer? 5. Where is the power (heat) dissipated in the electrodynamometer?Review/Explain with the aid of sketches the following excitation methods for a synchronous motor. DC EXCITATION, DC BRUSHLESS, AC EXCITATION.