SSC JE Electrical Engineering 24th Jan 2018 Shift-2

The S.I unit of magnetic flux is ..........

The relative permeability of diamagnetic materials is ............

Which of the following is the reciprocal of reluctance?

Which of the following is the CORRECT formula for permeance?

Determine the intensity of magnetization (in A/m) of a magnet when it has a pole strength of 60 A-m and a pole area of 20 sq. m.

What will be the magnitude of induced EMF (in V) in a coil that has 200 square loops, each of side 5 cm and placed normal to a magnetic field? The magnetic field increases at the rate of 4 Weber per sq. meter.

What will be the value of current (in A) in a 40 cm long solenoid in free space, if it has 400 turns, 2 cm of diameter and produces a magnetic field of 4 mT at its center?

What will be the self-inductance (in H) of a 2 m long air-core solenoid, if the diameter of the solenoid is 25 cm and has 600 turns?

What will be the mutual inductance (in mH) between the two coils. if a current of $$2 \sin(100 \pi t)$$ passes through one of the coil, which induces a maximum EMF of $$10 \pi V$$ in the second coil?

Determine the magnitude of the EMF (in V) induced between the axis of rotation and the rim of the disc, when the disc of diameter 40 cm rotates with an angular velocity of 40 revolutions per second and placed in a magneticfield of 1 T acting parallel to the rotation of the disc.