The toroid of Figure Po = 10 cm and a = 1 cm, what current is required to establish a magnetic flux of 0.5 mWb has a coil of 1000 turns wound on its core. If If the core is nonmagnetic 200 turns 2a
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A: Flux = mmfreluctance = NILμ0μrA use above formula to find current in the coil.
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- An air core toroidal coil has 120 turns, the length is 12 cm and 12 sq. cm in area What is the current required to set up a flux of 1.2x10° weber. What is the current?3- A magnetic core with an air gap is shown in below Figure. The depth of the core is 3 cm, the length of the air gap in the core is 4 cm, and the number of turns on the coil is 100. How much current is required to produce total flux of 0.00052 Weber? (H= 2000, Ho=4.n107). 6 cm 20 cm N = 100 4 cm = lg 6 cm 6 cm 18 cm 12 cm 18 cm 6 ст Depth = 3 cmA magnetic circuit has a length of 100 cm and cross-sectional area of 5 square cm. The total flux is 10 x 104 webers. The coil has 100 turns and current of 4 amperes. What is the magnetic strength? a. 500 AT/m b. 400 AT/m c. 350 AT/m d. 450 AT/m
- A flat circular coil having 50 loops of wire on in has a diameter of 48 cm. What current must flow in its wires to produce a flux density of 0.005 Tesla at its center?uèstion 5 Consider the magnetic circuit in Figure. Assuming that the core u= 1000uo has a uniform cross section of 4 cm N= 400, the flux density in the air gap. 0.2 A L-42 cm 04-0.1 cm 35.4 mwb 605 mwb 70 8 mwb archA rectangular coil of wire has a length of 3 cm and a width of 4 cm. It is in a 0.004 T magnetic field. What is the magnetic flux through the coil if the face of the coil is parallel to the B-field lines? What is the flux if the angle between the face of the coil and the magnetic field is 75°?
- The flux linking to 200 turns coil changes from 2 mWb to 5 mWb in 1ms to 3 ms. Determine the induced voltage.* 300 V 400 V 500 V 600 V What is the magnetomotive force created when 5 A current flows through 300 turns coil? * 1000 At 2000 At 1200 At 1500 AtA ferromagnetic core in the shape of a doughnut has a cross-sectional area of 0.11 m2 and an average length of 1.4 m. The permeabil ity of the core is 1.206 × 10-3 Wb/A-t. m. Determine the reluctance of the magnetic circuitA magnetic coil produces 100,000 maxwell with 2000 turns and with a current of a 2A. The current is cut-off and the flux collapse in 0.01 sec. What is the average voltage that will appear across the coil?
- A magnetic ring has reluctance of 1.675 × 10⁰ AT weber. The flux to be produced by the coil is 800 x 10 webers, then the AT required for the m.m.f. will beA toroidal core with a mean circumference of 100 cm and a cross-sectional area of 10 cm2 is wound with 500 turns of wire. What current would be required to generate a flux of 1 mWb in the core. Assume the core has a relative permeability of 800A magnetic circuit with a cross-sectional area of 20 cm? is to be operated at 50 Hz from a 120 V rms supply. The number of turns required to achieve a peak magnetic flux density of 1.8 T in the core is