EBK INTRODUCTORY CIRCUIT ANALYSIS
13th Edition
ISBN: 8220100668234
Author: Boylestad
Publisher: PEARSON
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Chapter 12, Problem 10P
Find the current necessary to establish a flux of
Fig.12.37
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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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- The volume of a transformer core built up of silicon sheet steel laminations is 12000 cm3. If the maximum flux density is 1.0 Wb/m2, find the hysteresis loss in joule/m3 per cycle. The hysteresis coefficient is 250arrow_forwardA 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_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
- A 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_forwardThe eddy current loss of a given solid core is 80 W at 50 Hz. What would be the loss of 60 Hz if the core flux density remained the same at the two frequencies. Answer: 115.2 W Use formula: Pe=ke f²arrow_forwardA mild-steel ring having a cross-sectional area of 500 and a mean circumference of 400 mm has a coil of 200 turns wound uniformly around it. Calculate: a. the reluctance of the ring; b. the current required to produce a flux of 800 μ Wb in the ring. arrow_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_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_forward5-5.When one coil of a magnetically coupled pair has a current 5.0 A the resulting fluxes ?11and ?12 are 0.2mWb and 0.4mWb, respectively. If the turns are N1= 500 and N2=1500, find L1, L2, M, and the coefficient of coupling karrow_forward
- Bar type CT has the following parameters:CT ratio = 2000/5 AMaximum primary current = 40 kAMaximum flux density in the core = 1.6 TImpedance (Actual burden) = 0.31 ΩCore cross sectional area = 20 cm2Find the maximum burden permissible if no saturation occurs.arrow_forward8. A 3-phase, 50 Hz transformer has an iron cross section of 400 cm^2. If the flux density be limited to 1.2 T, find the number of turns per phase on high and low voltage windings. The voltage ratio is 2,200/110 V, the HV side being connected in wye and the LV side is delta.arrow_forward11. The eddy current loss of a given solid core is 80 W at 50 Hz. What would be the loss of 60 Hz if the core flux density remained the same at the two frequencies. Answer: 115.2 W a. 55.55 W b. 66.67 W c. 96 W d. 115.2 Warrow_forward
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