Electrical Transformers and Rotating Machines
4th Edition
ISBN: 9781305494817
Author: Stephen L. Herman
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 2, Problem 1RQ
What determines the polarity of magnetism when current flows through a conductor?
Expert Solution & Answer
To determine
The factor which determines the polarity of magnetism when current flows through the conductor.
Explanation of Solution
According to the basic law of electricity, a magnetic field is created around the conductor whenever the current flows through it. The direction of flow current tells the polarity of the magnetic field and the quantity of current tells the strength of the magnetic field. In addition to the direction of current flow, left hand rule is used to determine the polarity of the magnetic field.
Thus, the direction of the current flow determines the polarity of the magnetism when current flows through the conductor.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
DC and AC subject:
Find the relative permeability of the typical ferromagnetic material whose magnetization curve is shown. H = 50, 100, 500 and 1000 A-turns/m.
DC and AC Subject:
Find the relative permeability of the typical ferromagnetic material whose magnetization curve
is shown. H = 50, 100, 500 and 1000 A-turns/m.
Answer these:
H = 100, 500, and 1000 A-turns/n
With the aid of diagram Define an electromagnet?
Explain with the aid of diagram how electromagnetisms work?
Explain with the aid of diagram what do you mean by right hand rule?
Give some strength of electromagnetic fields.
What do you mean by electromagnetic induction?
Explain with the aid of diagram what is an electromagnetic wave?
State the applications of electromagnetism.
Chapter 2 Solutions
Electrical Transformers and Rotating Machines
Ch. 2 - What determines the polarity of magnetism when...Ch. 2 - What determines the strength of the magnetic field...Ch. 2 - Prob. 3RQCh. 2 - How many lines of magnetic flux must be cut in 1 s...Ch. 2 - Prob. 5RQCh. 2 - Into how many time constants is an exponential...Ch. 2 - Each time constant of an exponential curve is...Ch. 2 - An inductor has an inductance of 0.025 H and a...Ch. 2 - Prob. 9RQCh. 2 - What electronic component is often used to prevent...
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 determines the strength of the magnetic field when current flows through a conductor?arrow_forwardHow can the polarity of an electromagnet be determined if the direction of current flow is known?arrow_forwardThe south pole of one magnet is brought close to the south pole of another magnet. Will the magnets repel or attract each other?arrow_forward
- The current in a component is reduced uniformly from 100mA to 20mA over a period of 8.0s.What is the charge that flows during this time? Оа. O a. 480 mC O b. 640 mC Ос. 320 mC O d. 160 mCarrow_forwardWhat are eddy currents?arrow_forwardWhat are the application of thermodynamics in electrical engineering?arrow_forward
- Define German Magnetophonarrow_forward10 cm 1.25 100 0.05 em 30 om 6.75 0.30 625 10 cm 00 1000 Magastaing inoway (A Ts 10 cm 30 cm- A two-legged magnetic core with an air gap is shown in Fig.1. The depth of is 5 cm, the length of the airgap is 0.08 cm, and the number of turns on the coil is 800. The magnetization curve of the core material is shown in Fig.2. The magnetic field density in air gap is 0.7 T. What is the total MMFin A-Turns required to magnetize both the iron core and airgap? Nas deasiy B(Tarrow_forwardQuestion 2 Calculate the amount of DC current required for the magnetic circuit given below to generate a flux density of 1.0 T in the airgap. The details are Number of turns, N = 400 The core is made up of steel, the B-H characteristic has been given below The magnetic core length, le = 500 mm The airgap length, Ig = 2 mm The cross-sectional area of the core, Ag = 100 mm² Neglect leakage and fringing. Core Cross-sectional i(1) area as Air gap Magnetic path length Figure 1 2.0 1.8 B-H Curves for Various Metals Steel 1.6 1.4 Magnetic Saturation 1.2 1.0 0.8 Iron 근 0.4 Air 0.2 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 Magnetic Field Strength - H (A/m) Figure 2 Flux Density - B (T)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Electrical Transformers and Rotating MachinesMechanical EngineeringISBN:9781305494817Author:Stephen L. HermanPublisher:Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning
Automotive Technology: A Systems Approach (MindTa...Mechanical EngineeringISBN:9781133612315Author:Jack Erjavec, Rob ThompsonPublisher:Cengage Learning
Electrical Transformers and Rotating Machines
Mechanical Engineering
ISBN:9781305494817
Author:Stephen L. Herman
Publisher:Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...
Mechanical Engineering
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:Cengage Learning
Automotive Technology: A Systems Approach (MindTa...
Mechanical Engineering
ISBN:9781133612315
Author:Jack Erjavec, Rob Thompson
Publisher:Cengage Learning
Understanding Conduction and the Heat Equation; Author: The Efficient Engineer;https://www.youtube.com/watch?v=6jQsLAqrZGQ;License: Standard youtube license