GATE EC 2014 Question Paper (15-Feb-2014) (Shift 1)

A good current buffer has

In the AC equivalent circuit shown in Fig, if Iᵢₙ is the Input current and Feedback Resistance is very large, the type of Feedback

In the low pass filter shown in the figure for a cut-off frequency of 5 KHz, the value of R₂ (in kΩ) is

The circuit employs pass transistor logic. All NMOS transistors are identical with threshold voltage of 1 V. Ignoring the body effect-the output voltage at P, Q, R are

The Boolean expression $\left(x+y\right)\left(x+\bar{y}\right)+\overline{\left(x\bar{y}\right)+\bar{x}}$ simplifies to