Earth Is the Lords
5th Edition
ISBN: 9781121660069
Author: Caldwell, Taylor
Publisher: MCG/CREATE
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Chapter 1, Problem 1.6Q
What is a ferromagnetic material? Why is the permeability of ferromagnetic materials so high?
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What is the definition of Diamagnetic, Paramagnetic and Ferromagnetic give examples and their applications
A ferromagnetic core with a relative permeability of 1500 is shown in the following figure. The depth of the core is 5 cm. Because of fringing effects, the effective area of the air gaps is 5 percent larger than their physical size. If there are 300 turns in the coil wrapped around the center leg of the core, and if the current in the coil is 1.25 A, find the magnetic flux and the field density in all three legs of the core, as well as the magnetic flux and flux density in the two air gaps.
A magnetic circuit has amagnetic field intensity of 400 AT/m. If the length of magneticpath is doubled and matianing the same magnetomotive force, how much is the newmagnetic field intensity?
Chapter 1 Solutions
Earth Is the Lords
Ch. 1 - What is torque? What role does torque play in the...Ch. 1 - What is Amperes law?Ch. 1 - What is magnetizing intensity? What is magnetic...Ch. 1 - How does the magnetic circuit concept aid in the...Ch. 1 - What is reluctance?Ch. 1 - What is a ferromagnetic material? Why is the...Ch. 1 - How does the relative permeability of a...Ch. 1 - Prob. 1.8QCh. 1 - What are eddy current losses? What can be done to...Ch. 1 - Why are all cores exposed to ac flux variations...
Ch. 1 - What is Faraday law?Ch. 1 - What conditions are necessary for a magnetic field...Ch. 1 - What conditions are necessary for a magnetic field...Ch. 1 - Prob. 1.14QCh. 1 - The linear machine in Figure 1-19 is running at...Ch. 1 - Just how does a decrease in flux produce an...Ch. 1 - Will current be leading or lagging voltage in an...Ch. 1 - What are real, reactive, and apparent power? What...Ch. 1 - What is power factor?Ch. 1 - Prob. 1.1PCh. 1 - A flywheel with a moment of inertia of 4kgm2 is...Ch. 1 - A force of 10 N is applied to a cylinder of radius...Ch. 1 - A motor is supplying 50Nm of torque to its load....Ch. 1 - A ferromagnetic core is shown in Figure P1-2. The...Ch. 1 - A ferromagnetic core with a relative permeability...Ch. 1 - A two-legged core is shown in Figure P1-4. The...Ch. 1 - A core with three legs is shown in Figure P1-5....Ch. 1 - A two-legged core is shown in Figure P1-4. The...Ch. 1 - A wire is shown in Figure P1-7 that is moving in...Ch. 1 - Repeat Problem 1-10 for the wire in Figure P1-8.Ch. 1 - Prob. 1.12PCh. 1 - A core with three legs is shown in Figure P1-10....Ch. 1 - A two-legged magnetic core with an air gap is...Ch. 1 - A transformer core with an effective mean path...Ch. 1 - The core shown in Figure P1-2 has the flux shown...Ch. 1 - Prob. 1.17PCh. 1 - Prob. 1.18PCh. 1 - Prob. 1.19PCh. 1 - Demonstrate that Equation (1-59) can be derived...Ch. 1 - Prob. 1.21PCh. 1 - Prob. 1.22PCh. 1 - For the linear machine of Problem 1-22: When this...
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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
- Explain the origin of ferromagnetismarrow_forwardA ferromagnetic core is shown in Figure 1. The relative permeability of the core isassumed to be 2500 and constant. There is a 5% increase in the effective area ofthe air gap due to fringing effects. The depth of the core is given as 5 cm. The Rtotal is found to be 226.192k At/Wbarrow_forwardA 4-pole wave wound armature has 120 conductors and runs at 1000 rpm. If the flux per pole is 40 mWb, the emf generated is? (Our subject is Electrical Machines 1 ) (I need a clear answer and solution. Thank you so much)arrow_forward
- how does the electrostatic discharge occur in the following situation? explain with suitable mathematical substantiation a. Insulator surface are rubbing together. b.Insulator surface are pulling apart.arrow_forwardIn a Curie-type paramagnet, all the ions with magnetic moments contribute to the total susceptibility, but in a metal, only very few of the free electrons contribute to Pauli paramagnetism. Why?arrow_forward1) A ferromagnetic core is shown in Figure 1. The relative permeability of the core isassumed to be 2500 and constant. There is a 5% increase in the effective area ofthe air gap due to fringing effects. The depth of the core is given as 5 cm.a) Calculate the total reluctance, total, of the corearrow_forward
- A 6-pole generatro has 600 conductors. If the flux per pole is 20mWb, at what speed must the armature be drive to generate 240V if a) lap wound connection, or b) wave wound connection.arrow_forwardWhat is the total flux at surface SA? What is the total flux at surface SB? What is the total flux at surface SC? What is the total flux at surface SD? What is the total flux at surface SE? What is the magnitude of an electric field passing through surface SC? What is the magnitude of an electric field passing through surface SD?arrow_forwardFind the inductance per unit length of a very long solenoid with a unit length of N windings. The permeability of the core is μ.arrow_forward
- Magnetic field intensity at point (3, 4, 0) due to the filament current I = 4A shown in figure will bearrow_forwardParamagnetic materials cannot be magnetized. Select one: True Falsearrow_forwardWhat is the induces e.m.f for the following quantity; number of conductors 800, flux per pole 0.05 web/pole speed 1500 r.p.m, wave armature winding and the number of poles = (E/10)²-2.arrow_forward
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