SSC JE Electrical Engineering 29th Jan 2018 Shift-2
For the following questions answer them individually
What will happen to the magnetic flux density produced in a material, if the magnetizing force is increased?
What will happen to the permeance of the magnetic circuit, if the area of the cross section of the circuit gets doubled?
Two coils of self inductance 3 H and 5 H are connected in a series-opposing each other. What is the equivalent inductance(in H) of the circuit, if the coefficient of coupling between the coils is 0.6 ?
The magnetic flux linking a coil having 200 turns is 40 mWb. Calculate the average emf(in V) induced in the coil, if this magnetic flux is reversed in a time of 5 milliseconds.
A solenoid has a diameter of 6 cm and a length of 60 cm and it comprises of 7000 turns. Calculate the energy stored (in J) in the solenoid, if 10 A current flows through it.
The current in the circuit shown below is 4 A. Calculate the magnetic field intensity (in A turns/m) in the core,if the winding has 50 turns.
