The field winding of a DC generator is wound with 900 turns and has a resistance of 50 ohms. If the winding is excited from a 240 volts dc source, the magnetic flux linking the coil is 4 mWb. Determine the self inductance of the coil?A coil of 1000 turns is uniformly wound on a ring of non magnetic material, the mean diameter being 20 cm. The cross sectional area of the coil is 4 sq cm. Determine the self inductance of the coil?What is the coefficient of coupling of two coils whose mutual inductance is 1H and whose self inductance are 1.2 and 2H?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?The total inductance of two coils A and B when connected in series aiding is 0.5 H and 0.2H when connected in series opposing. Coil A when isolated from coil B has a self inductance of 0.2H. Calculate the self inductance of coil B.The force acting on a pole of 3Wb is 12N. The magnetic intensity of the magnetic field is?Two straight parallel wires 2m long and 3mm apart carries a current of 8A in opposite direction. Calculate the force between these conductors.A wire 12cm long and carrying a current of 30A is placed in between the pole face of a magnet whose magnetic flux density is 0.9 tesla. If the wire is inclined at an angle 60 degrees from the plane of the magnetic field, what is the force exerted on the wire?The reluctance of a non magnetic circuit is 12 units. How much flux will be set up if surrounded by a coil 600 turns carrying a current of 3A?The relative permeability of a certain silicon steel is 4500. A certain magnetic loop consist of a silicon steel of 10 cm square, 20cm long and an airgap of ¼ cm. What is the reluctance of the magnetic circuit?An air core circular coil has 5000 turns. The inner and outer diameters are 20 and 24 cm respectively. If a current of 2A is passed through the coil, determine the flux density inside the coil.A magnetic circuit consist of silicon steel of 3000 permeability, of 10 cm length and a cross section of 1.5 sq cm and an air gap of the same cross section and of 2 cm length. A ½ A current flows through the 5000 turn coil. What is the field intensity of the airgap?

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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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The field winding of a DC generator is wound with 900 turns and has a resistance of 50 ohms. If the winding is excited from a 240 volts dc source, the magnetic flux linking the coil is 4 mWb. Determine the self inductance of the coil?
A coil of 1000 turns is uniformly wound on a ring of non magnetic material, the mean diameter being 20 cm. The cross sectional area of the coil is 4 sq cm. Determine the self inductance of the coil?
What is the coefficient of coupling of two coils whose mutual inductance is 1H and whose self inductance are 1.2 and 2H?
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?
The total inductance of two coils A and B when connected in series aiding is 0.5 H and 0.2H when connected in series opposing. Coil A when isolated from coil B has a self inductance of 0.2H. Calculate the self inductance of coil B.
The force acting on a pole of 3Wb is 12N. The magnetic intensity of the magnetic field is?
Two straight parallel wires 2m long and 3mm apart carries a current of 8A in opposite direction. Calculate the force between these conductors.
A wire 12cm long and carrying a current of 30A is placed in between the pole face of a magnet whose magnetic flux density is 0.9 tesla. If the wire is inclined at an angle 60 degrees from the plane of the magnetic field, what is the force exerted on the wire?
The reluctance of a non magnetic circuit is 12 units. How much flux will be set up if surrounded by a coil 600 turns carrying a current of 3A?
The relative permeability of a certain silicon steel is 4500. A certain magnetic loop consist of a silicon steel of 10 cm square, 20cm long and an airgap of ¼ cm. What is the reluctance of the magnetic circuit?
An air core circular coil has 5000 turns. The inner and outer diameters are 20 and 24 cm respectively. If a current of 2A is passed through the coil, determine the flux density inside the coil.
A magnetic circuit consist of silicon steel of 3000 permeability, of 10 cm length and a cross section of 1.5 sq cm and an air gap of the same cross section and of 2 cm length. A ½ A current flows through the 5000 turn coil. What is the field intensity of the airgap?

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