A three-phase induction motor has a rotor resistance and standstill reactance of 0.1 ohm and 3.5 ohms per phase respectively. The rotor emf at a standstill is 60 volts per phase, for slip of 5% what is the power developed?

Q: Frequency of emf in the stator of a 8 pole induction motor is 50Hz and the rotor emf frequency is…

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Q: 3.An induction motor has a rotor resistance and reactance at standstill of 0.1 ohm and 3.5 ohm…

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Q: What is the Power Stages in an Induction Motor, Draw it?

A: Types of losses in Induction machine Stator core loss Stator cu loss Rotor cu loss Friction loss…

Q: 6- Which of the following supply is given to the rotor winding of 3-Phase Induction Motor: a) DC…

A: 3 - phase induction motor  problems

Q: Explain the need for connecting a capacitor in the auxiliary winding of a single phase induction…

A: A single phase induction motor is not self starting and therefore, it is necessary to making it self…

Q: Discuss two ways of starting a single-phase induction moto

A: Single Phase Induction Motor: Single-phase induction motors are constructed in the same way as…

Q: . What are the various losses in an induction motor? On what factors do they depend

A: The fallowing are the various losses that occur in an induction motor:

Q: What are the main parts of an single phase induction motor? Explain the function Jeach,

A: In this question , we will write about main parts of single phase induction motor...

Q: Discuss the effects of rotor resistance in T-S characteristics of 3 phase induction motor.

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Q: Explain the rotating principle of a single phase induction motor.

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Q: 8. A 3-phase induction motor is running at 2% slip. If the input to rotor is 1000 W, then mechanical…

A: Given, A 3-phase induction motor has Slip, s=2%=0.02 Input power, Pin=1000 W

Q: What is a single-phase induction motor? How does a single- phase induction motor work? How do you…

A: Solve the first question, unless the student has asked for a specific question to be solved, subject…

Q: An 8 pole, 50 Hz slip ring induction motor runs at a slip of 2.67% on full load. The rotor…

A: Initial slip is given  s=2.67%=0.0267 Resistance is given R2=0.2 ohm When torque is constant slip is…

Q: 2. Describe the Torque-Slip characteristics of a three phase induction motor.

A: Torque-speed characteristics of 3- phase induction motor:- As seen from the torque equation, we can…

Q: why the slip of induction motor is never zero.

A: slip of the induction motor can be given by the following equation Slip = ( synchronous speed -…

Q: What are the main parts of an single phase induction motor? Explain the function each.

A: In this question , we will define parts of single phase induction motor..

Q: I need short presentation about reverse the direction of rotation of three-phase squirrel cage…

A: According to the question we have to explain about reverse the direction of rotation of three-phase…

Q: What are advantages and disadvantages of the induction motor?

A: Advantages of the induction motor: Since, the stator of the synchronous motor and the induction…

Q: 1. The operation of Commutator in DC Motor is O a) to convert dc to ac O b) to convert ac to dc O c)…

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Q: If a 4-pole induction motor has a synchro- nous speed of 1500 rp.m., then, supply fre- quency is (1)…

A: Given, An induction motor with, Number of poles, P=4 Synchronous speed, Ns=1500 rpm

Q: Explain in detail the Starting of Induction Motors

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Q: 3.8 An induction motor having 8 poles runs at 727.5 rpm. If the supply frequency is 50 Hz, the emf…

A: we need to deteremine emf in the rotor frequency.

Q: The efficiency of 3-ph induction motor. at (Is=4.5A, T=13 N.m, N=1333 rpm, Pph=864 watt ) is

A: The solution can be achieved as follows.

Q: Write a summary ( point) about equivalent cricuit of three phase induction motor .

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Q: Illustrate the effect of increasing number of poles in induction motor.

A: The main thing to understand is that increasing the number of poles reduces the motor’s synchronous…

Q: ationship between slip s) and load (Pa) in an induction motor? Please explain.

A: The induction motor is an AC motor. It rotates slightly less than synchronous speed. It is…

Q: State the types of induction motor

A: Types of induction motor

Q: Why do we need to have brushes in a squirrel-cage rotor type induction motor? (short answer

A: In this question we will write about brushes in induction motor.....

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.