Introductory Circuit Analysis; Laboratory Manual For Introductory Circuit Analysis Format: Kit/package/shrinkwrap
13th Edition
ISBN: 9780134297446
Author: Boylestad, Robert L.
Publisher: Prentice Hall
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Textbook Question
Chapter 12, Problem 3P
For the electromagnet in Fig. 12.34
a. Find the flux density in the core.
b. Sketch the magnetic flux lines and indicate their direction.
c. Indicate the north and south poles of the magnet.
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Chapter 12 Solutions
Introductory Circuit Analysis; Laboratory Manual For Introductory Circuit Analysis Format: Kit/package/shrinkwrap
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 conductor passes 50 times per across the face of the pole of a field magnet having a flux density of 15000 lines per sq in the dimensions of the pole face are 20x20in. Determine the (a). total flux, (b) lines cut per second (c) voltage induced (average).arrow_forwardFind the total magnetic flux.arrow_forwardWhat is a "Peclet number?" Give its significance. Additionally, calculate the overall flux using the Peclet number.arrow_forward
- 7 Select the variable loss of a DC Series Generator, in the given list. a. Mechanical Loss b. Copper Loss c. Friction loss d. Windage Lossarrow_forwardA coil of inductance 8mH, produces 80µWb of magnetic flux. Of this total flux, 60µWb are linked to a second coil of inductance 2mH, how much is the mutual inductance between coils?arrow_forwardPlease find the total flux in the core, the flux density B, and the magnetic field intensity H. When a 50 mA is applied to the core in the picturearrow_forward
- Which of the following is?are an application of electrimagnets. A) relays, B) generations, C) magnetic cluches, D) all of the above. When using the left hand rule for conductor, the fingers point in the direction of_______. A) the electron flow, B) the field around the conductor, C) both a and b, D) none Upon what does the strength of an air-cored coil depend?A) amount of current flow, B) number of turns, C) permeability of the core, D) all abovearrow_forwardShow that if a three phase set of currents, each of equal magnitude and differing in phase by 120 degrees, flows in a three-phase winding then it will produce a rotating magnetic field of constant magnitude.arrow_forward21 In a DC generator, if the core loss constant and the copper loss is increasing, then the efficiency will be maximum. Select one: True Falsearrow_forward
- The eddy current loss in a particular magnetic circuit is 10W/m3. If the frequency of operation is reduced from 50 Hz to 30 Hz with the flux density remaining unchanged, determine the new value of eddy current loss per cubic metre.arrow_forwardBelow you can find a ferromagnetic core and its magnetization curve. If i1=0.4 A and i2= 0.9A, find magnetic flux in the core and the relative permeability under these conditions.arrow_forwardThe electrodynamic wattmeter consist of two fixed coils ‘a’ and ‘b’ placed unsymmetrical to each other and producing a uniform magnetic field نقطة واحدة True Falsearrow_forward
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