Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Chapter 12, Problem 16P
Determine the current I1 required to establsh a flux of
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Round off your answer into four decimal places .Box your final answer .Use SI unit.
A magnetic circuit consist of silicon having a cross section of 1.5 sq. m and 0.1 m length and an air gap of the same cross section and pf 0.02 m length. what is the field intensity at the air gap if 0.5 A current flows through the 5000-turns coil? Assume the permeability of silicon steel is 3000.
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1. A solenoid 20 cm long is wound with 300 turns of wire and carries a current of 1.5 A. What is the approximate relative permeability of this core so as to produce a magnetic field of 0.6 T inside?
A. 225
B. 212
C. 210
D. 280
8. Two coils have inductance of 4 mH and 9 mH and coefficient of coupling is 0.50. If the two coils are connected in series opposing, the total inductance will be
A. 10 mH
B. 8 mH
C. 9 mH
D. 7 mH
4. If the Core of an Electromagnet is made of Permalloy (check the Tables for
Relative Permeability) and has a 250 turn coil. The cross section has
dimensions of 3 cm by 4.5 cm, and the average path length is 10 cm.
Determine the amount of Flux that will be developed when a Current of 350
mA flow in the coil.
Chapter 12 Solutions
Introductory Circuit Analysis (13th Edition)
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 coil consists of 750 turns. A current of 10A in the coil gives rise to a magnetic flux of 1200 Wb.Determine the inductance of the coil.arrow_forwardFind the hall coefficient of a silicon material used in a Hall generator with a gap distance is 2.0 cm. When a current of 300 A flows, the hall voltage is recorded as 10 V and a magnetic flux density of 0.2 T is produced. Lütfen birini seçin: a. 0.0461 b. 0.0074 c. 0.0695 d. 3.3333 e. 0.0033arrow_forwardAn electromagnet shown below has a cross section area of 10 cm2 with a mean length of iron path of 100cm and mean length of airgap is 0.4cm . It is excited by a coil of 1000 turns of conductor windings. When a current of 1A is provided to the coil and the relative permeability of iron is 1300, then find the magnetic flux in the circuit. Select one: Oa. 1.25Wb O b. None of these Oc.0.00027Wb O d. 027W.arrow_forward
- 13 - Which of the following is true about the magnetic field in the Biot-Savart law?I. is inversely proportional to r.II. It is inversely proportional to r2.III. It is directly proportional to the current. A) Yalnız I B) II ve III C) Yalnız III D) I ve III E) Yalnız IIarrow_forwardA magnetic coil with 2000 turns produces 1 mWb of flux when it carries a current of 2 A. The current is cut off and the flux collapses in 10 ms. Find the average voltage that will appear across the coil.arrow_forwardWhen one coil of a magnetically coupled pair has a current of 5 A, the resulting fluxes 11 and 12 are 0.40 mWb and 0.80 mWb, respectively. If the number of turns N1 and N2 are 500 and 1500, respectively, what is the self-inductance L2? a. 560 mH b. 1080 mH c. 540 mH d. 1060 mHarrow_forward
- 4. A magnetic field strength of 5000 A/m is applied to a circular magnetic circuit of mean diameter 250 mm. If the coil has 500 turns find the current in the coil.arrow_forwardAn iron core 0.4 m long and 5 square cm in cross section, is wound with 300 turns. When a current of 0.5 Aflows in the coil, how much is the inductance of the coil. Assume the core has a permeability of 2500arrow_forwardBiot-Savart law expresses the magnetic flux intensity produced by a dc electrical current Select one: O a. True b. None of the above O c. Falsearrow_forward
- 6 6 - A dielectric is a material that is: A) a semiconducting B) a nonconducting C) a superconducting D) none of them E) a conductingarrow_forwardA 100-turn coil wound on a magnetic core is found to have an inductance of 200 mH. What inductance will be obtained if the number of turns is increased to 200, assuming that all of the flux links all of the turns?arrow_forwardN=15 windings are wound on a square-section iron core with a square outer appearance. If the dimensions are w=2 cm, L1=8 cm and the magnetic permeability of the core is 0.004 H/m, how many micro Henrys is the inductance of the coil? a) 1500 b) none c) 500 d) 0.5 e) 5000arrow_forward
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