Engineering Electromagnetics
9th Edition
ISBN: 9780078028151
Author: Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher: Mcgraw-hill Education,
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Question
Chapter 9, Problem 9.6P
To determine
The induced emf that results from a given magnetic flux density.
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A ring of ferromagnetic material has a rectangular section. The inner diameter is 15 cm.The outer diameter is 24 cm. And the thickness is 5 cm. There is a coil of 500 turns wound onthe ring. When the coil has a current of 10 A, the flux in the core is 0.0007 Wb. Theaverage length of the ring is Ln=0.66m Determine:a) The magnetomotive force.b) The intensity of the magnetic field and the flux density.c) Reluctance, permeability and relative permeability.
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Chapter 9 Solutions
Engineering Electromagnetics
Ch. 9 - Prob. 9.1PCh. 9 - Prob. 9.2PCh. 9 - Prob. 9.3PCh. 9 - A rectangular loop of wire containing a...Ch. 9 - The location of the sliding bar in Figure 9.5 is...Ch. 9 - Prob. 9.6PCh. 9 - The rails in Figure 9.6 each have a resistance of...Ch. 9 - A perfectly conducting filament is formed into a...Ch. 9 - A square filamentary loop of wire is 25 cm on a...Ch. 9 - (a) Show that the ratio of the amplitudes of the...
Ch. 9 - Let the internal dimensions of a coaxial capacitor...Ch. 9 - Prob. 9.12PCh. 9 - En free space it is known that E = E0/r sin...Ch. 9 - A voltage source V0, sin cot is connected between...Ch. 9 - Use each of Maxwells equations in point form to...Ch. 9 - Derive the continuity equation from Maxwells...Ch. 9 - The electric field intensity in the region...Ch. 9 - Prob. 9.18PCh. 9 - In Section 9.1. Faradays law was used to show that...Ch. 9 - Prob. 9.20PCh. 9 - (a) Show that under static field conditions; Eq....Ch. 9 - Prob. 9.22PCh. 9 - Prob. 9.23PCh. 9 - A vector potential is given as A = A0 cos(đ�œ”t =...Ch. 9 - Prob. 9.25PCh. 9 - Write Maxwells equations in point form in terms of...
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- Amagnetic field is being generated by a current of 2.0A flowing through 180 turns of wire on a core having a reluctance of 210000.0 At/Wb. Determine the flux of the circuit in mWb.arrow_forwardA 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?arrow_forwardGiven a magnetic circuit with a current 2.6A flowing through 205 turns of wire on a core having a reluctance of 125000 At/Wb. Determine the magnetomotive force of the circuit in base units.arrow_forward
- Rotating Choose... Magnetic Field Mutual Choose... inductancearrow_forwardExample(6): A magnetic circuit containing an air gap is shown in Figure below. With the dimension as marked, calculate the current in the coil to establish a flux density of 0.6 T in the air gap. The core has the B - H characteristics. Repeat above but correct for fringing and lamination. Consider SF=0.95, FF 1.08 while is as above. 2 mm) A-5cm²arrow_forwardAmagnetic circuit has an average length of 1.4 m and a cross-sectional area of 0.25 m2. Excitation is provided by a 140 -turn, 30-Q, coil. Determine the voltage required to establish a flux density of 1.56 T. The reluctance of the magnetic circuit, when opera ting at this flux density is 768 A-t/Wb.arrow_forward
- Q4// A ring of a mean diameter 30 cm and cross sectional area of 15 cm2 is made up of semi – circular sections of cast iron and cast steel. If each joint has an air gap of 0.25 mm. Find amper turns required to produce a flux of 7 x 10 weber in the magnetic circuit. The relative permeability of steel and iron are 852 and 165 respectively. - OA- Amper turns required= 1105 OB- Amper turns required= 1995 OC- Amper turns required= 2250 OD- Amper turns required= 3150 OE- None of above ارسال الاجابةarrow_forwardQ2 (a): What is magnetic phase transformation? Discus and plot the phase transition from para to ferromagnetic. (b): Draw a magnetization curve of different feromagnetic materials and also discuss why different feromagnetic materials have different saturation levels.arrow_forwardA conductor is moving with a velocity of 12 m/s in the direction shown. The flux density is 1.6 T, and the length of the wire is 1.2 m making an angle with vertical axis. What is the magnitude and the polarity of the induced voltage at the terminals of the wire? Select one: a. eind 17.65 Volts, Positive terminal down b. None C. 40. d. eind eind e. B eind 14.81 Volts, Positive terminal down 17.65 Volts, Positive terminal up 14.81 Volts, Positive terminal downarrow_forward
- The applied MMF to a simple magnetic circuit is 350AT. It was found that the resulting magnetic field denstiy is 0.7 Wb/m². The average length of this magnetic circuit is 1.64ft and its cross sectional area is 4cm². What is the reluctance (in AT/Wb) of the magnetic material of the core?arrow_forwardThe saturation curve of a particular core material shows that at a magnetic field intensity of 1250 At/m and the flux density is 0.80 Tesla. Determine the relative permeability of the core material.arrow_forwardThe long linear conductor in the figure carries a current of 10A and is placed on the z-axis. A 12cm x 5cm rectangular loop carrying 2A current was placed 10 cm away from the conductor wire. Find the net magnetic force on the loop. Choose the option....arrow_forward
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