For what purpose was the asynchronous motor idle test performed? Please explain.

Q: Explain self-controlled synchronous motor drive with neat diagram.

A: A Self Controlled Synchronous Motor Drive consists of a load commutated thyristor inverter.the…

Q: What do you think would happen if you continued to increase the motor load and what conclusions do…

A: This question is belong to drives

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: 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: 30. Excluding slip, at what speed (r/min) with a four-pole, 60 Hz, 240 Volt motor runs?

A:

Q: What will happen if we run the motor at nominal load without starting? Please observe and explain…

A:

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: 3-phase, 50-horsepower induction motor

A:

Q: what is the laddered circuit of forward-reversed motor control?

A: Ladder diagrams are schematics used to describe industrial control logical systems. Since they…

Q: Briefly describe the regenerative braking method of a DC motor. Where it is used? For the toolbar,…

A: The detailed answer is solved below according to the given parameters and instructions in the…

Q: What is a Vertical Speed Indicator?  -Operation -Parts

A: Vertical Speed Indicator      "flight instrument that indicates the rate of climb or descent or the…

Q: Explain what is meant by the term 'back emf in a dc motor, and what effect does back emf have on…

A: According to bartleby guidelines, only the first question will be solved due to multiple unrelated…

Q: 16. What voltage may be applied to 230/460- volt motor if used with a part winding? Why?

A: What voltage may be applied to 230/460V motor if used with s part winding? Why?

Q: When calculating motors, why do we use the NEC table amperage instead of the nameplate amperage?

A: In the table of National electrical code (NEC) full load motor current higher to the motor's name…

Q: Explain why reduced current is important during the motor acceleration

A: Reduced current is important during motor acceleration because the current is very during starting…

Q: Draw the circuit diagram for the squirrel cage motor and name all the components too.

A: The circuit diagram for the squirrel cage induction motor:

Q: 5. Explain the used of Drum Switches? Draw the 6 point , 8 point and 9 point drum switches? 6. How…

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

Q: In Induction motor, the load test has done. The result get is like the table below. 1) Explain why…

A: An induction motor is a commonly used AC electric motor in which the electric current necessary to…

Q: Explain what are the values ​​to be taken into account in the Y / ∆ starting asynchronous motor…

A: Following values must be taken in account in star delta starting of asynchronous motor Voltage- it…

Q: What is the function of the double contact pushbutton in a Start-Stop-Jog motor control circuit?

A: Double contact pushbutton is used in the Start-Stop-Jog motor control circuit, its functions are as…

Q: Why is it possible to control the speed Using electronic control

A: Electronic speed control  : electronic speed controller is electronic circuit used to control speed…

Q: What is the work of the Automatic transmission control system?

A:

Q: 1-) Compare squirrel cage asynchronous motor and asynchronous motor with winding rotor.

A: Note: As per guidelines we are allowed to answer only the very 1st question. Please repost the…

Q: Define protective relay? Explain with appropriate diagram.

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: 2. What are the different types of Starters to control AC-Motor. Explain briefly. 3.

A: In this question we will write the types of starters to control AC motors..

Q: How many poles are required on motor starters for the following motors:(a)240-volt, single-phase…

A: Let, Synchronous speed of single phase induction motor is 1800 rpm. Synchronous speed of three…

Q: Your Answers may be presented through Discussions, Drawings/Figures/Diagrams, Reference to NEC/PEC…

A: The solution is given below

Q: Is the active power supplied to a motor affected by placing of capacitors in parallel with the…

A: The electrical machines can be generators or motors. They work on the principle of…

Q: Why starters are used for DC motors. * Your answer

A: Starter is a device which is used to start DC motors.

Q: Q3/ Why is a starting resistor used in de motor circuits?

A: The back e.m.f of the DC motor is Eb = ΦZN60XPA     Where Φ is flux/pole                 Z is total…

Q: For what purpose is the short circuit test performed in asynchronous motor? Please explain.

A: Need to explain about short circuit test in asynchronous motor

Q: 26- What is the voltage control technique used with very high-slip 1 induction motor? 27- How the…

A:

Q: Using the time limit overload or the dashpot overload relay, how are the following achieved:…

A: Using the time limit overload or the dashpot overload relay, the tripping current adjustments are…

Q: Overload protection for motors is achieved by connecting _________. Explain how possible.

A: Need to explain overload protection for motors is achieved by connecting

Q: Use the information given below in the name plate of a 3 phase induction mtor to calculate: Motor…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

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: 3. Why must the field winding left connected across the supply during the braking period?

A: As we know, E=kϕω E is constant at the start of breaking. ω∝1ϕ

Q: What is the relationship between asynchronous motor speed (n), load (Pa)?

A: In the induction motor  relationship between asynchronous motor speed (n) and load  power Pa

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: 1. If suddenly remove the load for the open loop control system, what will happen? please describe…

A: Open-loop control system: It is a type of control system in which input is independent of the…

Q: Where is the best place to look to find specific information about a motor, such as horsepower,…

A: The explanation is as follows.

Q: List 3 hazards when constructing (working) with a homemade D.C motor and how it can be managed?

A: List of some hazards when constructing (working) with a homemade D.C motor: Do not use in a…

Q: How can the current that a direct current motor will consume at start-up be determined?

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

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

A: Synchronous motor can not start by itself and the reason is, When a stationary rotor is fed by a DC…

Q: our Answers may be presented through Discussions, Drawings/Figures/Diagrams, Reference to NEC/PEC…

A: Given data, The conductor is connected to the three motors. Motor 1=50 hp Motor 2 = 40hp Motor 3 =…

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.