Discuss what the different between 'Regenerative' and 'Plugging' of braking mode control in induction motor drives.

Q: Describe the operation of a variable speed drive used in industry. State advantages of variable…

A: The different loads require to be run at different speeds. Hence, variable speeds should be present…

Q: g) Explain the differences between shunt-winding and repulsion-start type universal motors.

A: According to the question we have to explain the differences between shunt-winding repulsion-start…

Q: Explain with proper diagrams, how does the increase of field resistance for speed control in a small…

A: The connection diagram of a shunt motor of the field resistance control method (Flux control method)…

Q: Explain how you can adjust the speed of the asynchronous motor to different values, provided that…

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Q: What is the function of starter for medium and large size Induction Motors?

A: The motor not turns instantly when supply connected across because it provide a very small impedance…

Q: 1- What will happen if the armature current is turned on when a = 90°? 2- Why is series DC motor…

A: DC Drive The DC motor drive is a type of amplifier or power modulator that integrate between the…

Q: Explain briefly in maximum of two(2) sentences why the series wound DC motor type has a higher…

A: Incase of DC series motors armature and field winding is connected in series. The entire current is…

Q: Explain with necessary Torque-Speed 'characteristics the operation of repulsion-start induction-run…

A: The repulsion motor depends on the principle of repulsion between two magnetic fields. Consider a…

Q: Explain different methods of speed control of induction motor drive.

A: Different speed control methods of induction motor are as follows- 1. Change the applying frequency…

Q: 1-The main disadvantage of Rheostatic control method of a dc shunt motor, that the speed up to zero…

A: In this question , some statements are given related to dc machines , we have to find out that they…

Q: 4. A synchronous motor starts but fails to develop its full torque. What could it be due to?

A: I will be attending only question 4. Synchronous motor:                     Synchronous motors are…

Q: List and briefly explain the three (3) control strategies used in AC variable speed motors

A: There are various  through which  we can control speed of AC can be achieved. The speed adjustment…

Q: What are the Induction motor Performance Parameters?

A: Induction motor working Principle When an ac supply is connected to a stator it creates a rotating…

Q: Explain the speed control methods of induction motors.   write the answer with computer please

A: Speed control of Induction motor from Stator side: By changing the applied voltage: When the voltage…

Q: Questions:- 1-why does the speed fall slightly when the d.c. shunt motor is loaded? 2- what is the…

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Q: Define ‘shaft torque’ and ‘armature torque’ for a DC motor? Explain why a series motor is preferred…

A: Amature torque: the torque which is produced due to the current flowing in the armature conductors…

Q: (b) Differentiate the terms of 'Dynamic Braking’ and Plugging' in DC Motor drives when it is in…

A: The solution is given below

Q: Compare the breakdown torque and locked-rotor torque with the nominal torque of the squirrel-cage…

A: Induction Motors are the important parts of electrical machines and power systems in terms of Load.…

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: Explain how to reverse the direction of rotation of a stabilized-shunt motor? What is the condition…

A: The dc motor is a device that converts the dc electrical energy into mechanical energy.

Q: In short, answer the next question: How can determine whether the 3phase induction motor is working…

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Q: A 200V shunt motor drives a 200 Nm torque load when running at 1100 rpm. The armature and shunt…

A: Voltage V = 200 V Line current I =342 A  Armature resistance Ra=0.007 Ω Shunt field resistance Rsh=…

Q: A 460V, 1250rpm, 30hp DC shunt motor, operating at rated conditions is to be dynamically braked by…

A: In this question,   We need to draw the complete schematic of the motor in the braking.

Q: Explain the starting methods of asynchronous motors and explain the rationale of this method by…

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Q: Speed control of induction motor explain full theory fast

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Q: If we increase the torque (Tm) value, how does the idle and load running state of the induction…

A: The maximum torque or pull out torque in a three phase induction motor will be…

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: A 200V shunt motor drives a 200 Nm torque load when running at 1100 rpm. The armature and shunt…

A: Given data: Voltage V = 200 V Line current I =342 A  Armature resistance Ra=0.007 Ω Shunt field…

Q: How to address the low starting torque issue of induction motor?

A: At the starting of an induction motor the machine have poor power factor of the rotor circuit and…

Q: 1- Give the main purpose of the no-load test in (3 - 0) squirrel cage induction motor?

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

Q: A 460V, 1250rpm, 30hp DC shunt motor, operating at rated conditions is to be dynamically braked by…

A: ''Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: 1. Explain briefly in one(1) sentence how do we maximize the value of the armature current in a…

A: (1) When the load gets added to shunt wound DC motor the speed gets reduced and along with the speed…

Q: Why is the starting torque of the series motor high?

A: The explanation is as follows.

Q: If a 208V, 10-hp, four-pole, 60HZ, Y-connected induction motor with a full-lo ad slip of 5 percent…

A:

Q: in a DC motor why and how the gain K is affected by the amaurtue resistant and induance ? whats the…

A: For DC motor the emf equation is given as:

Q: A 460V, 1250rpm, 30hp DC shunt motor, operating at rated conditions is to be dynamically braked by…

A: In this question,   A DC shunt motor is given.  We need to find the The value (exact) of armature…

Q: What is the ratio of starting torque and maximum torque of a 3 phase, 50 Hz, 4 pole induction motor…

A: Ratio of Tst to TmaxTstTmax=2 SmaxSmax2 +1

Q: If static voltage of a squirrel cage induction motor is reduced to 50 percent of it's rated value,…

A: Given, The static voltage of a squirrel cage induction motor is reduced to 50 percent of it's rated…

Q: What do you understand by multi quadrant operation in an Electric drive? What are the advantages of…

A: Types of quadrant operation in Electric Drive Forward Motoring Reverse Motoring Forward Braking…

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: (B) Explain briefly the following Why the armature is connected as LAP winding with high torque low…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: Define pull out torque and what are the points to be considered when the load on the synchronous…

A: The pull out torque in the motor is expressed as the highest or maximum value of torque developed by…

Q: ) Explain the shunt-winding type universal motors. ) Explain the repulsion-start type universal…

A: a) to explain the shunt winding type universal motors b) to explain the repulsion start  type…

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

A: consider the given question;

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

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Q: What is the ratio of starting torque to maximum torque of a 3 phase, 50 Hertz, 4 pole induction…

A: Given a 3-phase induction motor having, Number of pole, P = 4 Frequency, f = 50 Hz Rotor speed at…

Q: What is the main precaution feature of running the series - wound de motor? Explain with the aid of…

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Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.