SSC JE Electrical Engineering 23rd Jan 2018 Shift-1
For the following questions answer them individually
Whatwill be the permeance(in H) of a coil, when the flux through the coil is 50 Wb and the value of produced mmf is 25 Amp-turns?
Whatwill be the current (in A) through a solenoid, when the solenoid has 160 turns and produces an mmf of 32 Amp-turns?
Determine the magneticfield strength (in A-turns/m) whenthe intensity of magnetization of the material is 0.078 A-turns/metre and the magnetic susceptibility of the material is 0.0013.
Whatwill be the value of coupling factor between twocoils, when the self-inductance of each coil is 30 mH and the mutual inductance between them is 60mH?
Determine the eddy current loss (in W) in a material having eddy current coefficient of 1, thickness of 0.04 m and volumeof 2 cubic metre which is kept in a magnetic field having a maximum flux density of 4 T and supplied by a frequency of 50 Hz.
Whatwill be value of magnetic field (in mT) at the centre of a 7 m long coil, when the coil has 230 turns and carrying a current of 3 A?
