EBK INTRODUCTORY CIRCUIT ANALYSIS
13th Edition
ISBN: 8220100668234
Author: Boylestad
Publisher: PEARSON
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Chapter 12, Problem 5P
Find the reluctance of a magnetic circuit if a magnetic flux
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A coil of 1000 turns is uniformly wound on a ring type non-magnetic material. The mean diameter and cross-sectional area of the ring are 20 cm and 4 cm^2. If the current flowing is 2 A, find the total flux in μWb.
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Chapter 12 Solutions
EBK INTRODUCTORY CIRCUIT ANALYSIS
Ch. 12 - Using Appendix E, fill in the blanks in the...Ch. 12 - Repeat Problem 1 for the following table if...Ch. 12 - For the electromagnet in Fig. 12.34 a. Find the...Ch. 12 - Which section of Fig. 12.35-(a), (b), or (c)-has...Ch. 12 - Find the reluctance of a magnetic circuit if a...Ch. 12 - Prob. 6PCh. 12 - Find the magnetizing force H for Problem 5 in SI...Ch. 12 - If a magnetizing force H of 600 At/m is applied to...Ch. 12 - For the series magnetic circuit in Fig. 12.36,...Ch. 12 - Find the current necessary to establish a flux of...
Ch. 12 - a. Find the number of turns N1 required to...Ch. 12 - a. Find the mmf (NI) required to establish a flux...Ch. 12 - For the series magnetic circuit in Fig.12.40 with...Ch. 12 - a. Find the current I required to establish a flux...Ch. 12 - Prob. 15PCh. 12 - Determine the current I1 required to establsh a...Ch. 12 - a. A flux of 0.210-4Wb will establish sufficient...Ch. 12 - For the series-parallel magnetic circuit in Fig....Ch. 12 - Find the magnetic flux established in the series...Ch. 12 - Prob. 20PCh. 12 - Note how closely the B-H curve of cast steel in...
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- A current of 200 mA passes through a coil of 300 turns wound on a core of length 50 cm, the relative permeability µr of which is 100. Calculate to find the magnetic flux density B setup within the core. Note that: µ0 = 4 π x 10-7 Hm-1arrow_forwarda. Find the reluctance of a magnetic circuit if amagnetic flux φ = 4.2 × 10−4 Wb is established byan impressed mmf of 400 A-turns.b. Find the magnetizing force H in SI units if themagnetic circuit is 6 in long.arrow_forwardA electric power line carries a current of 1000 A in a location where the earth's magnetic field is 5.0 × 10-5 T. The line makes an angle of 45° with respect to the field. Determine the magnitude of the magnetic force on a 100 m. length of line.arrow_forward
- q1) Draw magnetization curve for iron under AC excitation at 0 Hz, 50 Hz, and 100Hz on the same graph. repeat part (1) for wood. What can be inferred from the fact that flux form closed paths.arrow_forwardThe relative permeability of a simple magnetic circuit is 200. If the applied MMF of 200AT results from a magnetic flux of 0.4mWb, find the magnetic flux density, B (in mT milli Tesla), if the mean length of the magnetic circuit is 100cm.arrow_forwardA current flows through a long straight conductor. If the magnetic field strength at a distance of 5 cm from the conductor is 8 mT, calculate the current flowing through the conductor.arrow_forward
- Calculate the magnetic flux created by the field lines uniform magnetic force of 27 passing through a surface of 100 cm² with the following angles: a) 0° b) 30° c) 60° d) 90°arrow_forwardIf the intensity of the magnetic field is 100T, the length of the conductor is 10m and the magnitude of force perpendicular to the magnetic field is 10kN, calculate the current in the conductor.arrow_forwardDetermine the magnetic field strength and the mmf required to produce a flux density of 0.25T in an air gap of length 12mm.arrow_forward
- A current of I = 2 A flows in the +z direction through an infinitely long conductor wire placed along the z-axis. What is the magnetic field strength 3cm from the wire? It is A/m.arrow_forwardA conductor 350 mm long carries a current of 10 A and is right -angles to a magnetic field lying between two circular pole faces each of radius 60 mm. If the total flux between the pole faces is 0.5 Wb. Calculate the magnitude of the force exerted on the conductor.arrow_forwardWhen changes occur in a magnetic field that intersects a conductor, what results? Select one: a. Induced voltage. b. Increased conductor resistance. c. An overload condition. d. A short circuit.arrow_forward
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