Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 36, Problem 5RQ
Why are SCRs used to construct a bridge rectifier in many solid-state variable frequency drives?
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
In speed coontrol of dc motor, the final control element is motor.
Select one:
O True
False
estion 1
The step resolution of a stepper motor is set for 1024 steps per revolution, Find the frequency to rotate at 60 rpm.
(Give your answer in Hertz, put only numeric value)
Question 3
A proportional valve is handled by an PWM signal
Question 4
The speed of a stepper motor is controlled by
Question 5
The relay is driven by an analog signal
Question 6
Determine the output voltage from a PWM pin when the time ON is 25 ms and the frequency is 1kHz and Vcc-SV.
(Put only a number in Volt, no need to add the unit word)
Answer all part of the questions.
Chapter 36 Solutions
Understanding Motor Controls
Ch. 36 - Prob. 1RQCh. 36 - Prob. 2RQCh. 36 - If an alternator is used to provide variable...Ch. 36 - What solid-state device is generally used to...Ch. 36 - Why are SCRs used to construct a bridge rectifier...Ch. 36 - What is the main disadvantage of using SCRs in a...Ch. 36 - How are junction transistors driven into...Ch. 36 - What is the disadvantage of driving a junction...Ch. 36 - Prob. 9RQCh. 36 - In variable frequency drives that employ IGBTs,...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- What is the main disadvantage of using SCRs in a variable frequency drive?arrow_forwardWhat solid-state device is generally used to produce variable frequency in drives designed to control motors up to 500 HP?arrow_forward4 mechanical Obtuin a two-port formulation for the following wecksricd system: Ez منے اہم 77777 d & foarrow_forward
- Problem 1 3-Phase AC Machinery Principles Part 1: Complete the following table by calculating the speed of magnetic field rotation in AC machines depending on the number of poles and the operating frequency. Number of Speed (RPM) Poles Frequency f = 50 Hz Frequency f= 60 Hz 4 6. 10 Solutionarrow_forwardHow many layers of semiconductor material are used to construct an SCR?arrow_forwardAn inductor has an inductive reactance of 250 Ω when connected to a 60-Hz line. What will be the inductive reactance if the inductor is connected to a 400-Hz line?arrow_forward
- As shown in the figure below, this is a speed regulation method for DC separately excited motor. a) What is the speed regulation method? b) What are the characteristics for this speed regulation method? B no Ra le lo R: '3 E R3 Tr. Tarrow_forwardq16 The statement is True or False?arrow_forwardDefine IPM.arrow_forward
- 10arrow_forwardA. Incident sound waves in a dynamic pickup or microphone lead to the passage of AF current in the coil because- 1) The coil's motion within a magnetic field. 2) The motion within an electrostatic field.3) A DC voltage is applied to the coil. 4) Changes in the capacitive reactance across the coil. B. An intermittent (as opposed to continuous) motor is one in which the shaft revolves in- 1) An incremental motor. 2) A stepper motor. 3) A selsyn. 4) A fractional motor.arrow_forwardWhat is the front controller class of Spring MVC?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Understanding Motor ControlsMechanical EngineeringISBN:9781337798686Author:Stephen L. HermanPublisher:Delmar Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning
Electrical Transformers and Rotating MachinesMechanical EngineeringISBN:9781305494817Author:Stephen L. HermanPublisher:Cengage Learning
Precision Machining Technology (MindTap Course Li...Mechanical EngineeringISBN:9781285444543Author:Peter J. Hoffman, Eric S. Hopewell, Brian JanesPublisher:Cengage Learning
Automotive Technology: A Systems Approach (MindTa...Mechanical EngineeringISBN:9781133612315Author:Jack Erjavec, Rob ThompsonPublisher:Cengage Learning
Understanding Motor Controls
Mechanical Engineering
ISBN:9781337798686
Author:Stephen L. Herman
Publisher:Delmar Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...
Mechanical Engineering
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:Cengage Learning
Electrical Transformers and Rotating Machines
Mechanical Engineering
ISBN:9781305494817
Author:Stephen L. Herman
Publisher:Cengage Learning
Precision Machining Technology (MindTap Course Li...
Mechanical Engineering
ISBN:9781285444543
Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes
Publisher:Cengage Learning
Automotive Technology: A Systems Approach (MindTa...
Mechanical Engineering
ISBN:9781133612315
Author:Jack Erjavec, Rob Thompson
Publisher:Cengage Learning
Power Transmission; Author: Terry Brown Mechanical Engineering;https://www.youtube.com/watch?v=YVm4LNVp1vA;License: Standard Youtube License