SSC JE 2019-20 Technical Quiz 18

What will be the equivalent inductance of the given magnetic circuit, If the mutual inductance M = 20 mH, & their self-inductance are L₁ = 20mH & L₂ = 40mH.

A magnetic ring having a cross-sectional area of 40 cm² with a mean circumference of 120 cm, has a coil of 250 turn a around it. If the total flux produced is 40 m-Wb in the ring. By neglecting the flux leakage calculate the reluctance of the ring of the relative permeability μ_r = 150.

Determine the quality factor of a series resonant RLC circuit, when the bandwidth of the circuit is 20 Hz.

Calculate the total inductance (in H) of the circuit shown below:

Maximum permissible span (in meter) for wooden poles is

Transmission lines

Which property of a material opposes the passage of magnetic flux through it?

Determine the reluctance (in Amp-turns/Wb) of a coil, when the flux through the coli 25 Wb and the value of produced mmf is 50 Amp-turns.

Compensating winding is placed in the

A mercury vapour lamp gives