Why might the rotor of an induction motor become very hot if it was switched on and off repeatedly, even though it was not connected to any mechanical load?

Q: Explain any one type of enclosure used in DC motors with necessary diagram

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

Q: a) What is the operating principle of induction motor? b) Differentiate between induction motor and…

A: Induction motor works on the principle of Faraday's law of Electromagnetic Induction. Operating…

Q: determine the frequency of rotor current?

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Q: Explain 2 types of DC motors in terms of giving electric current to the rotor?

A: The solution is provided in the following section.

Q: explain any one method of speed control of Induction motor with respect to rotor side with diagram.…

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Q: Explain working of an induction motor in your own word and in detail Please do it fast

A: The motor which works on the principle of electromagnetic induction is known as the induction motor.…

Q: The armature and field circuits of a 230-volt shunt motor have resistance of 0.31 and 115 ohms…

A: For  shunt motor,   Counter emf = terminal voltage- voltage drop in armature resistance.  Armature…

Q: 1. If the blocked rotor test is to be performed on a wound rotor motor, and if the rotor winding is…

A: Always remember , the current flows through a close path. When the rotor winding are open i.e., no…

Q: Explain this below quesitons; a) Compare the squirrel cage induction motor with the asynchronous…

A: Bartleby has policy to solve only first question. So for the solution of rest questions re-upload…

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

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Q: 25. When a no-load test is conducted in an induction motor, what would happen to its circuit? a. the…

A: Given date ,  Testing of induction motor  About No load test and blocked rotor test. We know slip =(…

Q: How does the value of stator current density influences on the efficiency of the induction Motor (

A: In this question we will write effect of stator current density on efficiency of induction motor...

Q: How can we calculate the speed of the induction motor provided that the induction motor drive keeps…

A: Speed Control of IM There are many methods to control the speed of IM. Variable Voltage Control…

Q: Which one of the following types of motors is not normally reversible? A. PM motor B. Universal…

A: Universal notor is generally an dc motor on which the direction of rotation can be reversed by…

Q: H.W/ Find out the sufficient answer with a brief explanation of the reason? write formula if it…

A: A three-phase induction motor is an asynchronous motor. The speed of the motor is slightly less than…

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: Q2: b- Explain how does the three- phase induction motor work?

A: INDUCTION MOTOR: Based on the rotor construction, the induction motor is classified into Squirrel…

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: A 3 phase, 4 pole, 60 Hz induction motor is running at a speed of 1720 rpm. Input power to the motor…

A: Given: 3-phase induction motor with specification Number of poles, P=4 Frequency, f=60 Hz Rotor…

Q: what is the synchronous speed (rpm) given a six-pole induction motor with 40 cycles/second?

A: In this question we need to find a synchronous speed of the given induction motor.

Q: A 50-horsepower, 460V, 60Hz, 3-phase induction motor has a Nameplate Rating of 60 amperes. The…

A: Given information, Rated output power is P=50 HP. The rated voltage is VL=460 Volts. Three-phase…

Q: A 12 pole, 3 phase, 50 Hz, induction motor runs at 463 rpm, determine the frequency of rotor…

A: Given : induction motor running at 463 rpm  12 pole , 3 phase , stator frequency f = 50 Hz N = 463…

Q: a) When the speed of the induction motor is zero (or not rotating), in which electrical machine does…

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Q: a) Why the slip of induction motor is never zero, b) What happens if the slip of induction motor is…

A: (a) Slip of induction motor will be zero ,if speed of rotor is equal to synchronous speed. For slip…

Q: Why there is need of starter in the 3-phase induction motor?

A: At the Starting of 3-phase induction motor, If we apply rated voltage to Stator, very high current…

Q: Indicate the relevant changes in induction motor performance (output power, speed, efficiency, power…

A: Since you have asked more than one question, I will answer the first question and all its subparts.…

Q: Why can a multispeed fan motor be operated at lower speed than most induction motors without harm to…

A: Ans . THE STATOR WINDING HAS A MUCH HIGHER IMPEDANCE

Q: Q2. a) Why the slip of induction motor is never zero, b) What happens if the slip of induction motor…

A: The slip in an induction motor is the difference between the main flux speed and their rotor speed.…

Q: 55 hp, 440 V, 400 rpm DC shunt motor draws 107 A when operating at rated conditions. The motor has…

A: In this question we will draw diagram of dc shunt motor showing all  resistance,currents and…

Q: Q1/ A 380 volts 4 pole 60 Hz three phase star connected induction motor has r,=0, X1=X2=1 N,…

A: The three-phase induction motor is rated at 380V 4 pole 60Hz has fed from the 220V constant voltage…

Q: Question 3 Explain in detail the Starting of Induction Motors

A: According to question we have to explain in detail the starting of Induction Motors.

Q: what is doubly fed induction motor how it works and also examples based on this motor.

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Q: 1. Describe the constructional features and characteristics, of a induction motor that would be used…

A: Note: As per our policy, I have attempted the first question.

Q: How does the starting torque responsible in the use of the starter for the 3 phase induction motor

A: In the 3 phase induction motor, the value of the armature resistance is kept minimum to avoid the…

Q: 1.) Why are the rotor rods of squirrel cage induction motor placed in a crosswise manner? 2.) What…

A: The rotor bars of the squirrel cage induction motor is skewed because of the various advantages.

Q: s it important to calculate the parameters of the induction motor? Explain why.   2. Do…

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

Q: A. What is necessary to start a synchronous motor to rotate from standstill? Describe the process

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

Q: Vhat is the difference of the wound rotor three phase induction motor. For what purpose is it used?…

A: (i) A wound rotor motor is a variation of the three-phase induction motor, designed to provide high…

Q: Induction motor is self starting or not?

A: Self starting of the motor generally means that the motor starts running by itself without the use…

Q: When an induction motor is started directly from the line, the starting torque is 1.75 times full…

A: Given  Tst= 1.75 TFL

Q: Explain briefly in one(1) sentence what is the function of the squirrel cage winding in the…

A: Given: squirrel cage winding

Q: Question is from book electric machine 1 topic induction motor We need to derive an oil burner with…

A: To derive the oil burner split phase induction motor is preferred which is a type of single phase…

Q: QUESTION 6 A 90KW, 6 pole synchronous motor is designed to operate from a 400 volt,60 hertz supply…

A: This is synchronous motor so it will run at synchronous speed which can be calculated as per below…

Q: (1) Explain why induction motors are preferred for industrial use. (2) Explain the principle of an…

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

Q: A 10 Hp, 440 volts, 60 Hz, 3-phase, 6 pole, induction motor has 4% slip at full load. What is the…

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Q: 1- What causes a three-phase motor to run backwards? 2- How we can reverse the direction of the…

A: Whenever the phase sequence of the motor is reversed it makes the motor to move backwards

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.