GATE 2025 Analog Circuits Evaluation Quiz 2

The op-amp given has an open loop gain of 2 and all other parameters of op-amp are ideal. Calculate the input resistance (R_in).

A diode circuit shown in the figure below consist of two diode D₁ and D₂

The diode connected are assumed to be ideal diodes then the transfer characteristic curve of the clipper circuit formed by the two diodes can be represented as

For Designing a DC regulated power supply of 6V across the load with variable load current of 1mA to 20mA Zener diode specifications are (I_Z)_min = 0.1 mA & I_{z max} = 50 mA with input unregulated DC voltage of 10V to 15V a circuit shown in figure.

So the suitable value of resistance of R_S is

It is desired to design a phase shift oscillator using FET having gm = 5000 μs & r_d = 40k and feedback circuit R = 10k. What should be the value of C for operation at 1 kHz and R_D for A = 40?

In the circuit shown below the transistor parameter are V_TN = 1 V and K_n = 30 μA/V².

If I_D = 0.6 mA and V₁ = 5 V and V₂ = 2 V let width to length ratio for transistor M₁= X, transistor M₂= Y and transistor M₃= Z, then the value of is ____.