In the circuit shown, the Norton equivalent resistance (in Ω) across terminals a–b is ___________.

In the circuit shown in the figure, the value of node voltage V₂ is

In the circuit shown in the figure, the angular frequency $$\omega$$ (in rad/s), at which the Norton equivalent impedance as seen from terminals b-b' is purely resistive, is _______.

The following arrangement consists of an ideal transformer and an attenuator which attenuates by a factor of 0.8. An ac voltage V_wx1 = 100V is applied across WX to get an open circuit voltage YZ1 V across YZ. Next, an ac voltage V_YZ2 =100V is applied across YZ to get an open circuit voltage V_WX2 across WX. Then, V_YZ1 / V_WX1 , V_WX2 / V_YZ2 are respectively,