Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 31, Problem 6SQ
When the high button is depressed in Figure 31–4, what prevents the high-speed starter from closing immediately?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
L2 L3
T1
T2
T3
Two-Speed Motor
T12
T13
Coniral Transtormer
Low
Stop
TR
OL
OL
CA
CR
TR
TR
High
H.
CA
TR
LAO31- Autcmatic speed control for a two-speed, two winding three-phase motor.
32. Is it necessary to press the stop button when changing from a high speed to a low speed in
figure 31-4? Why or why not?
Which is correct for Question 3?
Do fast please
Chapter 31 Solutions
Electric Motor Control
Ch. 31 - Excluding slip, at what speed (r/min) will an...Ch. 31 - What is meant by the description separate winding...Ch. 31 - Prob. 3SQCh. 31 - Prob. 4SQCh. 31 - In Figure 314, what does the broken line between...Ch. 31 - When the high button is depressed in Figure 314,...Ch. 31 - Which coils are energized immediately when the...Ch. 31 - At what speed can a four-pole, 240-volt, 5-hp,...Ch. 31 - What is meant by the compelling action produced by...Ch. 31 - Prob. 10SQ
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
- 3- Why is the starting torque of the series motor high?arrow_forwardWhat removes the starting winding from the electrical circuit of an opentype split-phase motor once it reaches 75% of its operating speed? Select one: A. STARTING SWITCH B. DISCONNECT SWITCH C. CENTRIFUGAL SWITCH D. PHASE-OUT SWITCHarrow_forwardWhen a repulsion-start induction-run motor reaches about 75% of rated full-load speed, it stops operating as a repulsion motor and starts operating as a squirrel-cage motor. What must be done to cause the motor to begin operating as a squirrel-cage motor?arrow_forward
- How can you determine the current that a direct current motor will draw at start-up?arrow_forwardQuestion 2: An induction motor has synchronous speed of 3600 RPM and a nameplate speed of 3520. What is the motor's percent slip • 1.8% • 2.0% • 2.2% • 2.4%arrow_forwardIn Figure 327, the motor cannot be started in high speed. Why?arrow_forward
- Q2- Indicate whether the following statements are true or false and correct the false statements 1- are placed at the magneti tral axis voted by 10au Son ffected by load current es ung MAN HUM 7- The speed of d.c series motor is decreased if the armature current is decreased 8- The compensating winding carrying the field current 9- By tapping field method, the speed of d.c series motor can be controlled below rated value 10- To solve the Commutation Problem in small machines, this can be achieved by increasing the brush widtharrow_forwardWhy there is need of starter in the 3-phase induction motor?arrow_forwardA three phase star connected six pole induction motor has parameter R1=0.294,R2=0.144,X1=0.209,X2=13.25,SLIP OF THE motor is 2% find stator of input impedencearrow_forward
- Question No.26 The full load slip of 60 Hz, 12 pole squirrel cage induction motor is 5%. Its full load speed isarrow_forwardExplain why synchronous motor doesn’t have any self-starting torque. Demonstrate some measures to make it self-starting. Please dont copyarrow_forward2. Draw the schematic diagram of a six point Drum Switches that operate the long shunt compound dc motor in reverse –forward operation. Connect all the parts into the Drum Switch terminals only not in the outside of the Drum Switches. Explain your connection.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage LearningElectricity for Refrigeration, Heating, and Air C...Mechanical EngineeringISBN:9781337399128Author:Russell E. SmithPublisher:Cengage Learning
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning
Electricity for Refrigeration, Heating, and Air C...
Mechanical Engineering
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Cengage Learning
Single Phase Induction Motor, How it works ?; Author: Lesics;https://www.youtube.com/watch?v=awrUxv7B-a8;License: Standard Youtube License