Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Chapter 12, Problem 15P
To determine
The force carried by the plunger.
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A toroidal coil, with a circular cross-sectional area of 0.2m2. The coil inductance is 0.28H. The coil
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b. 140.000 A
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d. 249000.000 A
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a. 500 AT/m
b. 400 AT/m
c. 350 AT/m
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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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- Find the pull exerted on the plunger of an electromagnet when the total flux is 300 uWb. The diameter of the plunger is 2 cm.arrow_forwardA ferromagnetic core in the shape of a doughnut has a cross-sectional area of 0.11 m2 and an average length of 1.4 m. The permeabil ity of the core is 1.206 × 10-3 Wb/A-t. m. Determine the reluctance of the magnetic circuitarrow_forwardwer the followings A. Find the current supplied by the battery to the following circuit of when a "short' occurs across terminals a and b T -12 V N turns R1 www 4kQ Cast iron a b R2 ΣΟΚΩ For the following magnetic circuit, the flux passing through the core is 1.32 mWb, the cross section of the core is 3 cm by 4 cm, the laminated section has a stacking factor of 0.9, and the gap is 1 mm Determine the flux density in each section. Neglect fringing R3 ww 3ΚΩ Air gap Laminated sheet steelarrow_forward
- False True Q1 In closed series magnetic circuit, the flux concentration in these parts will be low in that of small cross- sectional area The ferromagnetic materials used as a core of coils to initiate eddy current losses The apparent power in AC circuit is equal to the imaginary power The arrowhead of the magnetic flux lines means the direction of the flow of the magnetic flux linesarrow_forwardThe self inductance of a coil is a. Inversely proportional to current b. Inversely proportional to flux c. Inversely proportional to number of turns d. Directly proportional to currentarrow_forwardA coil that con sists of 450 windings is wound aroundabakelite ring. The mean diameter of the ring is 100 mm and the diameter of the bakelite core is 20 mm. The currentthrough the coil is 3 A. Determine: 1.1 a) the field stren gth b) the flux den sity c) the total flux A ringhas two halves. The onehalf is made from Cast iron, while the other is made from Cast steel. The two halves are held 1 mm apart with the aid of a paper disc. The cross-section al area and mean circumference of the ringis 345 mm? and0.6 m respectively. Therelative permeability of cast iron is 2400, while that of cast steel is 600. The ring has a coil with 200 win dings. The currentflow through the coil causes a flux den sity of 0.48T. 1.2 Calculate the: a) mmi b) currentflow Ignore the effects of fringing andleakage.arrow_forward
- A coil is used for producing a flux of 0.24 x 10 webers. If the current flowing in the coil is 2 amp and the coil has 200 turns. the total m.m.f required to produce the flux will bearrow_forwardQ1- The given ferromagnetic core relative permeability is 800. Determine the total reluctance of the core. 35 cm 10 cm 20 cm 5 cm 15 cm 45 cm 15 cm 15 cm 10 cmarrow_forwardThe magnetic flux through each turns off a 100-turn coil is (³-2) milli-webers where t is in seconds. The induced EMF at t = 2 second is?arrow_forward
- In the given circuit, if number of turns of coil is 125 and current is 2A, relative permeability of the core is 765 and mean length of core is 0.2m and cross section area of 0.01m2 , then the flux generated in the core is Select one: O a. 1.24mWb HO b. None of these O c.0.124mWb O d. 1.24 Wbarrow_forwardA and B are two coils in close proximity. A has 1200 turns and B has 1000 turns. When a current of 0.8A flows in coil A a flux of 100 µWb links with coil A and 75% of this flux links coil B. Determine the self inductance of coil A, and the mutual inductance.arrow_forward3- A magnetic core with an air gap is shown in below Figure. The depth of the core is 3 cm, the length of the air gap in the core is 4 cm, and the number of turns on the coil is 100. How much current is required to produce total flux of 0.00052 Weber? (H= 2000, Ho=4.n107). 6 cm 20 cm N = 100 4 cm = lg 6 cm 6 cm 18 cm 12 cm 18 cm 6 ст Depth = 3 cmarrow_forward
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