For the circuit shown in the figure, the source frequency is . The mutual inductance between the magnetically coupled inductors is  with their self inductances being  and . The Thevenin's impedance, , between the terminals  and Q in  is _______ (rounded off to 2 decimal places).

The input impedance , for the network shown in

Two identical coils are each having inductance L are placed together on the some core. If an overall inductance of  is obtained by interconnecting these two coils, the minimum value of  is _______________.

Two identical coupled inductors are connected is series. The measured inductance for the two possible series connections are , Their mutual inductance in  is __________

The three limbed non ideal core shown in the figure has three windings with nominal inductances L each when measured individually with a single phase AC source.

The inductance of the windings as connected will be

In the circuit shown in Figure, it is found that the input ac voltage (v) and current I are in phase. The coupling coefficient is , where M is the mutual inductance between the two coils. The value of K and the dot polarity of the coil P-Q are

Given two coupled inductors  and , their mutual inductance M satisfies

The effective inductance of the circuit across the terminals A, B in the fig, shown below is:

Determine the impedance seen by the source  in the network shown in fig.

Two identical coils negligible resistance when connected in series across a 200V, 50Hz source draws, a current of 10A. When the terminals of one of the coils are reversed, then current drawn is 8A. The coefficient of coupling between the two coils is

The equivalent inductance seen at terminals A-B in figure is _____________H