ISRO Scientist or Engineer Electronics 2020

A 18 $$\mu F$$ - Capacitor holding of Q coulomb is connected to the circuit at time t = 0 sec.

The time at which the capacitor will be discharged to. approximately $$\frac{Q}{2.72}$$ coulombs.

Determine the value of voltage $$V_{1}$$ in the figure shown below

The Value of Voltage $$V_{1}$$, in volts is

Output characteristics of a BJT amplifier is given, Find the minimum collector current required for $$r_0$$=50 K Ω ($$r_0$$ is the output resistance)

In the given circuit, $$S_{1}$$, switch remains closed and $$S_{2}$$ remains open for the long time .At $$t = 0, S_{1}$$ opens and $$S_{2}$$ closes and remain in this position for the long time. Find drain current for $$t < 0$$ and $$t >> 0$$ respectively if, $$\mu_n C_{ox} = 100 \mu A/V^2$$ and the Aspect ratio = 2

In the circuit shown below, switch $$S_{1}$$ is closed and t = 0 seconds. Switch $$S_{2}$$, is opened at t = 0 seconds.

The current flowing through the inductor of 0:3 H at t=8 mili seconds is

The Transmission Parameters of the network given below is represented in the matrix form as $$[T]=\begin{bmatrix}A & B \\C & D \end{bmatrix}$$

Calculate the Transmission Parameter B of [T] matrix,

In the circuit shown, diodes are ideal. Which is the correct representation of transfer characteristics of the circuit?

Consider the R-L-C network shown below

The average power absorbed by the Inductor in Watts is

The total number of possible trees corresponding to the network shown below is

For an n-type Ge specimen, width = 4 mm, length = 1 mm, current (along the length of nen) = 1 mA, magnetic field (perpendicularto the current flow direction) = 0.1 $$\frac{Wb}{m^{2}}$$ and Hall voltage magnitude = 0.005 V. Calculate the majority carriers density.