Laboratory Manual for Introductory Circuit Analysis
13th Edition
ISBN: 9780133923780
Author: Robert L. Boylestad, Gabriel Kousourou
Publisher: PEARSON
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Textbook Question
Chapter 12, Problem 9P
For the series magnetic circuit in Fig. 12.36, determine the current I necessary to establish the indicated flux.
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Chapter 12 Solutions
Laboratory Manual for 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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- An 8-pole lap-wound d.c. generator has 120 slots having 4 conductors perslot. If each conductor can carry 250 A and if flux/pole is 0.05 Wb,calculate the speed of the generator for giving 240 V on open circuit. Ifthe voltage drops to 220 V on full load, find the rated output of themachine.arrow_forward26 Choose the parameter which is developed in a generator, when a conductor cuts the magnetic flux. a. Current b. Voltage c. Mechanical Energy d. Forcearrow_forwardFind the magnetic flux φ established in the seriesmagnetic circuitarrow_forward
- In a pair of coupled coils, coil 1 has a continuous of 2 A and the corresponding fluxes φ11 and φ21 are 0.3 and 0.6 mWb respectively. If the turns are N1= 500, N2= 500, find L1, L2, M and K.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_forwardWhen one coil of magnetically coupled pair has a current of 5 Amp, the resulting flux Φ11 = 0.4 mWb and flux Φ12 = 0.8 mWb respectively. If the turns are N1 = 500 and N2 = 1500, Find L1 and coupling coefficient k.arrow_forward
- Calculate the speed and open-circuit line and phase voltages of a 4-pole, 3-phase, 50Hz, star connected alternator with 36 slots and 30 conductors per slot. The flux per pole is 0.0496 Wb and is sinusoidally distributed.arrow_forwardA 50 Hz, 2 pole, 3Φ star-connected turbo alternator has 54 slots with 4 conductors per slot. The pitch of the coils is 2 slots less than the pole pitch. If the machine gives 3300 V between lines on open circuit sinusoidal flux distribution, determine the useful flux per pole.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_forward
- A single-phase, 120V(rms),60Hz source supplies power to a series R-L circuit consisting of R=10 and L=40mH. (a) Determine the power factor of the circuit and state whether it is lagging or leading. (b) Determine the real and reactive power absorbed by the load. (c) Calculate the peak magnetic energy Wint stored in the inductor by using the expression Wint=L(Irms)2 and check whether the reactive power Q=Wint is satisfied. (Note: The instantaneous magnetic energy storage fluctuates between zero and the peak energy. This energy must be sent twice each cycle to the load from the source by means of reactive power flows.)arrow_forwardThe 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 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_forward
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