8. At what velocity must a conductor 75 mm long cut a magnetic field of flux density 0.6 TIf an g.m.fof 9 V is to be induced in t? Assume the conductor, the field and direction of motion are mutually perpendicular. 9. 9. The wingspan of a metal aecoplane is 36 m. If the accoplane is flying at 400 km/h, determine the e.m.f. Induced between Its wing tips. Assume the vertical component of the earth's magnetic field is 40µT.

8. At what velocity must a conductor 75 mm long cut a magnetic field of flux density 0.6 TIf an g.m.fof 9 V is to be induced in t? Assume the conductor, the field and direction of motion are mutually perpendicular. 9. 9. The wingspan of a metal aecoplane is 36 m. If the accoplane is flying at 400 km/h, determine the e.m.f. Induced between Its wing tips. Assume the vertical component of the earth's magnetic field is 40µT.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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A square magnetic core has a mean length of 43 cm and a cross-sectional area of120cm2. A coil of 200 turns of wire is wound around one of the columns of the core, thewhich is made of a material whose required magnetic field strength is H=115 Aturns/m. a) How much current is required to produce a flux of 0.012 Wb, in the core?b) What is the relative permeability of the core for that current?c) What is the reluctance?
Consider a ferromagnetic ring (nucleus) that has a mean circumference of 40 cm, 300coiled copper turns and a sectional area of 5 cm2. A current of 2 is appliedA to winding, producing a flux of 1.5 mWb.Determine the permeability of the core material.Determine the relative permeability of the core material.If the ferromagnetic ring has an air gap of 2 mm. Find the required MMFso that the flux density in the gap is 0.5 T.
A magnetic core has a mean length of 20 cm, a cross-sectional area of 4 cm2, and a relative permeability of 2000. A 500-turn coil wound on the core carries a dc current of 0.1 A. a. Determine the reluctance of the core, the flux density in the core, and the inductance. b. Compute the energy stored in the magnetic field as W= (1/2)LI2. c. Use Equation 14.41 on page 720 to compute the energy density in the core. Then, compute the energy by taking the product of energy density and volume. Compare to the value found in part (b).
A ferromagnetic material has a remanence of 1.5 T and a coercivity of 50,000 A/m.Saturation is achieved at a magnetic field intensity of 200,000 A/m, at which the fluxdensity is 2.5 T. Using these data, sketch the entire hysteresis curve in the rangeH= −200,000 to +200,000 A/m
An ideal core (assume relative permability is infinity) with a crossectional area of 12 cm2is excited via 10A current flowing through coil with 200 turns. On the one side of the coil, a 1 cm long paramagnetic material (µr=1) is placed. Calculate the magnetic field on paramagnetic material
A toroid (ring shaped) magnetic core is wounded by a coil having 250 turns. The inner (ri) and outer radii (rd) are 20cm and 25cm, respectively. The toroidal core has a circular cross section (S). For a coil current of 2.54 A, calculatea. The magnetic flux density along the mean radius of the core (l).b. Flux in the core.c. Flux linkage of the coil.d. Reluctance of the toroid core.e. Magnetic permeability of the material.f. The inductance of the coil, under the assumption that the flux density within the core is uniform and same at every point of the core.
An ideal core (assume relative permability is infinity) with a crossectional area of 12 cm2is excited via10A current flowing through coil with 200 turns. On the one side of the coil, a 1 cm long paramagneticmaterial (µr=1) is placed. Calculate the magnetic field on paramagnetic material
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Given a magnetic circuit with a current 2.6A flowing through 205 turns of wire on a core having a reluctance of 125000 At/Wb. Determine the magnetomotive force of the circuit in base units.
An iron-cored choke is designed to have an inductance of 12.5 H when operating at a fluxdensity 3 T, the corresponding relative permeability of iron core is 1500. Determine thenumber of turns in the winding, given that the magnetic flux path has a mean length of 20cm in the iron core and 2 mm in air-gap that its cross-section is 15 cm2
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