Answer the following with solutions. 8. The plane of a rectangular coll makes an angle of 60° with the direction of a uniform magnetic field of flux density 0.04 T. The coil is of 20 turns measuring 20 cm by 10 cm and carries a current of 0.5 A. Calculate the torque acting on the coil. Answer: 4x10^-3 N/m 10. An iron ring has a length of 60 cm and cross section of 4 sq. cm. If the field strength is 1.1 T, calculate the required ampere turns. Assume permeability of iron is 1800. Answer: 291.78 AT 11. An iron ring of cross sectional area 6 cm² is wound with a wire of 100 turns and has a saw cut of 2 mm. Solve the magnetizing current required to produce a flux of 0.1 mWb if the mean length of magnetic path is 30 cm and relative permeability of iron is 470. Answer: 3.5 A 12. A power transformer has a core material for which the hysteresis coefficient is 130 3/m². Its volume is 8000 cm³ and the maximum flux density is 1.25 T. What is the hysteresis loss if the frequency of alternating current is 50 Hz? Answer: 74.31 Watts
Answer the following with solutions. 8. The plane of a rectangular coll makes an angle of 60° with the direction of a uniform magnetic field of flux density 0.04 T. The coil is of 20 turns measuring 20 cm by 10 cm and carries a current of 0.5 A. Calculate the torque acting on the coil. Answer: 4x10^-3 N/m 10. An iron ring has a length of 60 cm and cross section of 4 sq. cm. If the field strength is 1.1 T, calculate the required ampere turns. Assume permeability of iron is 1800. Answer: 291.78 AT 11. An iron ring of cross sectional area 6 cm² is wound with a wire of 100 turns and has a saw cut of 2 mm. Solve the magnetizing current required to produce a flux of 0.1 mWb if the mean length of magnetic path is 30 cm and relative permeability of iron is 470. Answer: 3.5 A 12. A power transformer has a core material for which the hysteresis coefficient is 130 3/m². Its volume is 8000 cm³ and the maximum flux density is 1.25 T. What is the hysteresis loss if the frequency of alternating current is 50 Hz? Answer: 74.31 Watts
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Answer the following with solutions.
8. The plane of a rectangular coll makes an angle of 60° with the direction of a uniform magnetic field of flux density 0.04 T. The coil is of 20 turns measuring 20 cm by 10 cm and carries a current of 0.5 A. Calculate the torque acting on the coil.
Answer: 4x10^-3 N/m
10. An iron ring has a length of 60 cm and cross section of 4 sq. cm. If the field strength is 1.1 T, calculate the required ampere turns. Assume permeability of iron is 1800.
Answer: 291.78 AT
11. An iron ring of cross sectional area 6 cm² is wound with a wire of 100 turns and has a saw cut of 2 mm. Solve the magnetizing current required to produce a flux of 0.1 mWb if the mean length of magnetic path is 30 cm and relative permeability of iron is 470.
Answer: 3.5 A
12. A power transformer has a core material for which the hysteresis coefficient is 130 3/m². Its volume is 8000 cm³ and the maximum flux density is 1.25 T. What is the hysteresis loss if the frequency of alternating current is 50 Hz?
Answer: 74.31 Watts
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