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 theĀ magnetizing force is increased?
What will happen to the permeanceĀ of the magnetic circuit, if the area of the crossĀ section of the circuit gets doubled?
Two coils of self inductance 3 H and 5 H are connected in a series-opposing eachĀ other. What is the equivalent inductance(in H) of the circuit, if the coefficient of coupling betweenĀ the coils is 0.6 ?
The magnetic flux linking a coil having 200 turns is 40 mWb. Calculate the averageĀ 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 7000Ā 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 fieldĀ intensity (in A turns/m) in the core,if the winding has 50 turns.
