What is synchro? Explain how it is controlled with respect to control system

Q: Q1.In the figure below, a percentage differential relay with a slope of 7% and a bias current of 0.1…

A: Solution- The given circuit diagram is shown below,

Q: Question 2 Explain in detail relation between speed and frequency in synchronous machine

A: The synchronous speed is the speed of the revolution of the magnetic field in the stator winding of…

Q: List the advantages of using damper bars in synchronous machines?

A: to list the advantages of using damper bars in synchronous machines

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: For the control system shown below the difference equation

A:

Q: Define pilot relay

A: Pilot relay

Q: Explain (i) control relay and (ii) Thermal overload relay?

A: Control relay A control relay is an electromagnetic device that is most commonly used in protection…

Q: Why do we use a reactive power control relay? What are the essential factors that should be…

A: To explain the reactive power control relay

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: What are typical uses for control relays

A: Relays are sensing devices in nature. Control relays enable a low current circuit to control a high…

Q: 4. What is the difference between the reverse power relay and the direction relay?

A: The difference between reverse power relay and the directional relay is

Q: 14-Which is the most effective and currently used method in asynchronous motor speed control…

A: In this question we need to choose a correct option

Q: Explain the operation of an on delay relay.

A: On  delay relay is a time relay delay.

Q: Voltage control method of speed control in DC shunt motor is used for____appliactions. a. below…

A: Voltage Control  :-  When the speed is regulating the motor terminal voltage while maintaining…

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

A:

Q: If a synchronous machine is used as a motor. Which voltage is higher? The phase or the induced…

A:

Q: discuss the application of nyquist criterion to determine stability of a closed loop control system

A: Nyquist criterion: Nyquist criterion is a tool widely used to determine the stability of a system.

Q: What is a Bimetallic strip? Explain its function in Overload relay

A: The bimetallic strip is the device that work on the principle of thermal expansion. The thermal…

Q: For the Starting Up the Power Station Simulator Why are certain operations blocked by isolators

A:

Q: For the closed-loop control system transient response shown in figure below. for unit step input,…

A: In the question, Find the steady state error of the given unit step response?

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: 2. What is the Advantage of using Synchroscope compared to Synchronizing Lamp?

A: Advantages of using synchroscope compared to synchronizing lamps:

Q: Which are the Methods for Synchronous Control?

A: Synchronous Control: It is a LED screen control system that the picture showing on the LED screen…

Q: 1. Explain the conditions and operation of Synchronous machine parallel operation with diagram…

A: Conditions for parallel operation of the synchronous machine: 1) The terminal voltage of the…

Q: Explain the operation of an off delay relay

A: Off delay relay is a time relay delay.

Q: What is synchronous speed?

A: This Question is from Electrical Machine.

Q: Discuss the operation of the following control system . (i) Servo Motors (ii) Synchronous

A:

Q: -pu ent. What is the effect of the additional time constant on the transient response of the…

A: Solve the problem

Q: For the closed-loop control system described by the block diagram shown in figure below. = 0.12 ess…

A: Let us use the concept of steady state route for unit ramp input cases to solve for the values of A…

Q: Question about Control System Engineering What is expected to the transient response if the control…

A: When the energy state of any system is disturbed, and the disturbances occur at input, output or…

Q: What is the advantage Synchronizing Lamp compared to Synchrosope?

A: The brief working and advantages are as follows.

Q: What is the fundamental requirements of protective relay?

A: The protective relay is a device which is used to operate the circuit breaker under any fault…

Q: Why does mechanical relay reacts slower in switching compared with two other main types of relay?…

A: Relay: It is a controlling device that acts as a switch. It is of three types,  a) Electromechanical…

Q: Why there is no mechanical vibration present in solid state relay? Compare the working of…

A: Solid state relay don't have any moving part inside it. In most of the case moving part cause…

Q: For the closed-loop control system transient response shown in figure below. for 1.8 amplitude of…

A: The steady-state error of a control system is the difference between the desired output and the…

Q: List the difference between open loop and closed loop control system with suitable example.

A: Difference between open loop and closed loop control system :

Q: Brief about DC motor control using L298N module, and write a code to drive the DC motor using L298N…

A: DC motor control using L298N: It is a 15-pin motor driven IC. It is high current and high voltage IC…

Q: Qn 1. Explain the conditions and operation of Synchronous machine parallel operation with diagram

A:

Q: (a) Why does synchronisation failure occur?

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

Q: The armature of a synchronous machine is found in :?

A: The explanation is as follows.

Q: 1- How it was insured in the control circuit as to avoid the operation of both A.C and D.C supplies…

A: 1. There are several ways to separate both DC and AC supply operation, but one method is a single…

Q: explain open loop control system and closed loop control system

A: Open loop control system : A system in which there no influence of output on the input of system is…

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: 4. How do you adjust the slope of the percentage differential relay?

A: PERCENTAGE DIFFERENTIAL RELAY: The percentage differential relay is a relay that operates on the…

Q: . What is the Advantage of using Synchroscope compared to Synchronizing Lamp?

A: There are different techniques available for the synchronization of the alternator(generator). 1-…

Q: What is a measure of a synchronous coefficient A. Ability to operate with the force to push it…

A: The Synchronous Power Coefficient Psyn is the measure of the stiffness between the rotor and the…

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.