a. Explain how a rotating magnetic field is produced in a three-phase induction motor. b. Explain the rotor action on a three-phase squirrel cage motor when the load increases from NO-LOAD to rated FULL- LOAD

a. Explain how a rotating magnetic field is produced in a three-phase induction motor. b. Explain the rotor action on a three-phase squirrel cage motor when the load increases from NO-LOAD to rated FULL- LOAD

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter8: Basic Electric Motors

Section: Chapter Questions

Problem 28RQ: What are the advantages and disadvantages of using the following types of motors? shaded-pole...

See similar textbooks

Related questions

Q: The Voltage across any two slip rings of a slip ring induction motor at standstill is 100 V. If the…

A: Given values are - VS-SLine=100VR2Phase=0.4OhmSlips=4%=0.04

Q: c) What is the physical meaning for each of the following induction motor parameters: R1 „R2 ,Rc ,X1…

A: Induction Generator Equivalent circuit diagram of induction motor

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: Explain in details why does the rotor of the three phase induction motor rotate, then determine the…

A: Need to find why rotor of induction motor rotate

Q: How the rotating magnetic field is produced. Explain its importance in the operation of an Induction…

Q: A-3-phase induction motor is required to be operated at about 700 rpm. What will be the number of…

Q: P-1).. Which of the following determine the amount of torque produced by a single-phase split-phase…

A: In single phase split phase motor the amount of torque produced is depend on the phase angle…

Q: (a) Write four disadvantages of stator voltage speed control method of 3-phase Induction motor. (b)…

Q: Q4: a) In the experiment of performance study of three-phase wound rotor induction motor, what are…

A: Approximate Equivalent circuit diagram of wound rotor induction motor is given by Where V is the…

Q: 8- The DC test for three phase induction motor determines (a) Rotor resistance(R2) (b) Stator…

A: Dc test means connect any two stator terminal to a variable dc source and connect a voltmeter in…

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

Q: Select which of the following winding of Synchronous motor requires AC power supply. O a.…

A: Choose the correct option The winding of synchronous motor require ac power supply ?

Q: Explain in details why does the rotor of the three phase induction motor rotate, then determine the…

A: three-phase induction rates at a slightly slower speed than the asynchronous speed of the…

Q: 11/ Name the type of three-phase induction motor, which provides low starting torque. a. Squirrel…

A: Option) a Squirrel cage rotor have the low starting torque , the starting cannot be increased by…

Q: 1.)Armature reaction decreases the magnetic flux in? a)induction motor b)DC motor c)synchronous…

A: Armature reaction is defined as effect of armature field on main field flux. Armature reaction…

Q: This question refers to a three-phase induction motor. which statement are false (A) The slip speed…

A: According to question:

Q: How is a rotating magnetic field produced in a three-phase induction motor? Explain it with the help…

Q: 7- Iron loss in the rotor of a 3-phase induction motor (a) Very low frequency of emf induced in the…

A: In this question, We need to choose the correct options Iron losses in the rotor of the 3 phase…

Q: 2. Explain how the polarity of the generator may be kept the same with reversed rotation. 3. Explain…

A: to explain how the polarity of the generator may be kept same with reversed rotation to explain what…

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: 19. What effect does slip have on rotor reactance of a 3-phase squirrel-cage induction motor? a)…

A: ROTOR: Based on the rotor construction, the induction motor is classified into Squirrel cage…

Q: Which of the following statements about three-phase squirrel-cage induction motor is false? (A) it…

A: Choose the correct options Which of the following statements about three-phase squirrel-cage…

Q: (b) A three-phase, 50 Hz, four poles induction motor runs at a no-load speed of 1350 r/min and…

A: This question belongs to electrical machine . It is based on the concept of slip of induction motor…

Q: Examine the saddle torque of induction motors and the effect of different groove structures on the…

Q: A) Which of the following is/are a part of a 3-phase induction motor? a) stator b) rotor c) both "a"…

A: Problems based on induction motor

Q: 14.a. The reason for using a laminated stator core in a universal motor is to A. limit the eddy…

A: Iron losses of motor contain hysteresis and eddy current loss. Hysteresis loss depends upon core…

Q: 6) The speed of a d.c. motor can be controlled by varying its flux per pole or resistance of…

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

Q: 9. The synchronous speed of a three-Phase induction motor depends on the number of magnetic poles in…

Q: 2-The speed of a slip-ring induction motor cannot be controlled by: (a) Rotor resistance control.…

A: B)pole changing method We can control the speed of induction motor with help of rotor resistance and…

Q: How rotor winding is derived the power in the three-phase induction motor? O a. from Single phase…

A: The power flow diagram of a three phase induction motor is shown below,

Q: a) Explain the internal structure of an threephase induction motor. b) Explain the reason that…

A: Electrical machines can be either generators or motors. They can be either AC machines or DC…

Q: Q6: Choose the correct answer, (answer five only): 1-The slip-rings in an AC gen.provide means of:…

A: In this question we will write about induction motor , ac generator , power consumed ,dc machine…

Q: A) Although the magnetic field for each phase of a 3-phase induction motor is merely switching back…

A: For a 2 pole, 3 phase stator winding, the three windings are displaced from each other by 1200 along…

Q: What are the factors that the induced voltage in three phase induction motor depends upon and…

A: Ans-: Factors depends on a magnitude of induced voltage is the change of magnetic flux & the…

Q: How is the stator rotating magnetic field created in the three-phase induction motor? Explain.

Q: A) Although the magnetic field for each phase of a 3-phase induction motor is merely switching back…

A: A) Given statement, Although the magnetic field for each phase of a 3-phase induction motor is…

Q: (b) A three-phase, 50 Hz, six pole induction motor runs at a no-load speed of 915 r/min. and…

Q: Name the type of three-phase induction motor, which is used for high starting torque application O…

A: Given : General motors are required in the high power application devices or power systems. For…

Q: Discuss the behaviour of an induction motor when it is rotating at synchronous speed.

A: Induction motor can't run at synchronous speed as the slip will be zero at synchronous speed. When…

Q: 18. What is the frequency on the rotor of a 3-phase squirrel-cage induction motor, when the rotor is…

A: When the rotor is at standstill condition, the speed of the rotor is zero. So, the value of slip is,…

Q: 1- To control the speed of an induction motor, the supply frequency is reduced by 10%. For the same…

A: Given, To control the speed of an induction motor, the supply frequency is reduced by 10%.

Q: For a 60 Hz rated frequency generator, the rms voltage induced in a 50 turns armature coil by a 2…

A: Given Data: E = 120 V flux = 0.015 wb T = 50 P = 2

Q: b) Briefly explain the differences between synchronous motors and induction motors. You should…

A: Difference between synchronous and asynchronous motors are :- Synchronous motor does not have slip.…

Concept explainers

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.

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps with 7 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Name three factors that determine the torque produced by an induction motor.
Would a positive-rotating harmonic or a negative-rotating harmonic be more harmful to an induction motor? Explain your answer.
What are the advantages and disadvantages of using the following types of motors? shaded-pole motor PSC motor split-phase motor capacitor-start–capacitor-run motor
What are typical applications of synchronous motors?
Explain the rotating principle of a single phase induction motor.
How is a rotating magnetic field produced in a three-phase induction motor? Explain itwith the help of suitable diagrams.
Explain why the slip of an Induction motor is directly proportional to the rotor copper loss.
14.a. The reason for using a laminated stator core in a universal motor is toA. limit the eddy currents and the iron losses.B. limit the saturation of the magnetic circuit.C. maintain a constant level of magnetic flux.D. decrease the doc reactance of the field winding.14.b. If an induction motor has two protective housings for capacitors, it is aA. single-voltage capacitor-start motor.B. permanent-split capacitor-start motor.C. capacitor start-and-run motor.D. dual-voltage capacitor-strut motor.
Explain in details why does the rotor of the three phase induction motor rotate, then determine the speed of the revolving field relative to i) stator field distribution ii) rotor structure.
This question refers to a three-phase induction motor. which statement are false (A) The slip speed is the synchronous speed minus the rotor speed. (B) As the rotor speed is loaded, the slip decreases. (C) The frequency of induced rotor EMF's increases with load on the rotor (D) The toque on the rotor is due to the interaction of magnetic fields.
3.An induction motor has a rotor resistance and reactance at standstill of 0.1 ohm and 3.5 ohm respectively. At standstill the voltage induced to the rotor is 60volts per phase. If the slip is 5%, determine the rotor current
Examine the saddle torque of induction motors and the effect of different groove structures on the saddle torque.