PYQs Based Test - 01 : Network Theory

The switch in the circuit in the figure is in position P for long time and then moved to position Q at time t = 0.



The value of $\frac{dv\left(t\right)}{dt}$ at t = 0⁺ is

The switch in the circuit, shown in the figure, was open for a long time and is closed at t = 0.



The current i(t) (in ampere) at t = 0.5 seconds is __________

A linear 2-port network is shown in Fig. (a). An ideal DC voltage source of 10 V is connected across Port 1. A variable resistance R is connected across Port 2. As R is varied, the measured voltage and current at Port 2 is shown in Fig. (b) as a V₂ versus -I₂ plot. Note that for V₂ = 5 V, I₂ = 0 mA, and for V₂ = 4 V, I₂= −4 mA.

When the variable resistance R at Port 2 is replaced by the load shown in Fig. (c), the current I₂ is _______ mA (rounded off to one decimal place).

Consider the two-port network shown in the figure.



The admittance parameters, in siemens, are

For the two-port network shown in the figure, the impedance (Z) matrix (in Ω ) is