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- The length of a magnetic circuit in a moving iron instrument is 300mm. The coil around the soft-iron core has 360 turns and takes a current of 1.75 A. The core is square in section with sides of 20 mm. Takethe relative permeability of soft iron as 1100. Determine the flux densityThe length of a magnetic circuit in a moving iron instrument is 300mm. The coil around the soft iron core has 360 turns and takes a current of 1.75 A. The core is square in section with sides of 20mm. Take the relative permeability of soft iron as 1100. Determine the total fluxIf you placed a bar of ion inside a cylindrical coil of wire, and then run dc through the wire, you have: a. a rheostat b. a permanent magnet c. a flux meter d. an electromagnet
- What is Ohm's Law of magnetic circuit? Derive relation between electric and magnetic circuit.The capacitor in the rectifier is chosen such that O a. Time constant CR is ten times of that AC output Supply O b. Time constant CR is ten times of that AC input SupplyA)The left hand rule for a coil is such that if you were to hold a coil in your left hand with your fingers pointing in the direction of the electron flow, your thumb would point in the direction of thea) electron flow b) flow lines c) face of the north pole d) none of the above. B) What is a magnetic flux line?a) It is the space around a magnet or the space in which the magnetic forces act.b) It is the magnetic force that has a definite direction at all points along a curved line from the north to south pole.c) It is the ability of a magnetic material to be easily magnetized.d) none of the above C)It is believed that a magnetic material is .........a) consists of a single large magnetic molecule b) is composed of many tiny magnetic molecules c) consists of a single non-magnetic molecule d) none of the above
- Using figures (a) and (b), a magnetic flux density of 0.1 Wb in the air gap Determine the current I in the coil with 200 turns required to produceA current in a 250 turn coil is 2.25A, wound in a core that has a reluctance of 12,000 AT/Wb. What is the resulting flux density (in Tesla), if the area of the core is 8cm²?16. This is the ability of the material to impede a flow in magnetic flux a. Resistance b. Permeance c. MMF d. Reluctance