Earth Is the Lords
5th Edition
ISBN: 9781121660069
Author: Caldwell, Taylor
Publisher: MCG/CREATE
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Question
Chapter 1, Problem 1.12P
To determine
To find: The flux produced in the core by the specified current. Also, the relative permeability of the given core.
To check: Whether the assumption for the relative permeability is good or not for the given conditions. Also, whether this assumption in general is good or not.
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Answer what is requested in each item of the following magnetic circuit. Use at least 4 decimal places in the calculations. The magnetic core in the figure has a uniform depth of 5cm, the relative permeability is 3000 and the currents in the openings are i1=4A, i2=2A. Calculate the value of average length in the air gaps (X) if the central flux density is 0.6T and there is no increase in area by the marginal section of the air gaps.a) flux from the rightb) Flux from the leftc) Average distance Xd) Flux density in the air gaps.
Q4)
A square magnetic core has a mean path length 55cm and x-sectional area of 150cm2. A 200 turns coil of wire is wrapped around one leg of the core. The core is made of the material having relative permeability 3980.
Find
• How much current is required to produce 0.012 Wb of flux in the core
• Calculate the reluctance and magnetomotive force.
A long solenoid is wound with1000 turns of thin insulated wire over a 15cm length. The core of the solenoid is iron, with a susceptibility of 3000. What is the permeability? What is the relative permeability? What is the magneticintensity H when the current is 10 mA? What is the magnetization of iron for this H? What is the magnetic field B for this H?
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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