SSC JE Electrical Engineering 27th Jan 2018 Shift-2

Which one of the following is the CORRECT expression for Biot-Savart law?

Which one of the following statement is TRUE about the magnetic lines of force?

Which one of the following material is considered as a non-magnetic material?

Determine the current through a coil (in A), if the coil has 140 turns and produces mmf of 14 Amp-turns.

On which of the following parameters the eddy current loss occurring in a material does not depend?

Determine the flux (in Wb) through a coil when the reluctance of the coil is 4 Amp-turns/Wb and the produced mmf is 48 Amp-turns.

Determine the magnetic field strength (in A/m) of a material when the intensity of magnetization of the material is 0.084 Amp/m and the magnetic susceptibility of the material is 0.0012.

Determine the coupling factor between two coils each having self-inductance of 40 mH and the mutual inductance between them is 40 mH.

Determine the eddy current loss (in W) in a material having eddy current coefficient of 1, thickness of 0.03 m and volume of 2 cubic metre which is kept in a magnetic field of maximum flux density of 3 T and supplied by a frequency of 50 Hz.

Determine the magnitude of magnetic field (in mT) at the center of a 50 cm long solenoid, if the solenoid has 300 turns and carrying a current of 5 A.