List of top Questions asked in AP PGECET- 2026

The MUX shown in fig is \( 4 \times 1 \) multiplexer. The output Z is \[ \text{} \]

To double the drain current of an N-channel enhancement mode MOSFET biased in saturation _ _ _ _ .

An amplifier without feedback has a voltage gain of 50, input resistance of 1 k\(\Omega\) and output resistance of 2.5 k\(\Omega\). The input resistance of the current-shunt negative feedback amplifier using the above amplifier with a feedback factor of 0.2, is

What does the parameter \( S_{11} \) represent in a two-port network?

Fresnel zone is also called as _________.

The cut off frequency of the dominant mode in a TE wave in the line having a and b as 2.5 cm and 1 cm respectively is,

Which access technique is primarily used in the Global System for Mobile communications (GSM)?

The matched filter is equivalent to which of the following?

In flat top sampling scheme, _______ is kept constant after sampling.

Calculate power in each sideband, if power of carrier wave is 176W and there is 60% modulation in amplitude modulated signal?

{PD controller:

The system with the open loop transfer function \(\frac{1}{s(1+s)\) is:

The greater the Gain Margin in the control system, the greater is its _________.

The transfer function from D(s) to C(s) is _________. Given \(G(s) = \frac{2{3s+1}\) and \(H(s) = 3\)}

The total number of complex multiplications required to compute N point DFT by radix-2 FFT is?

Find the convolution sum of sequences \(x_1[n] = \{1, 2, 3\}\) and \(x_2[n] = \{2, 1, 4\}\).

Which of the following systems is memoryless?

Find the ROC of \(x(t) = e^{-2t u(t) + e^{-3t} u(t)\).

Which of the following is a register-indirect addressing mode instruction set?

How many select lines would be required for an 8-line-to-1-line multiplexer?

The device shown here is most likely a _________.

The result “\(X + XY = X\)” follows which of these laws?

Which of the following options comes under the non-saturated logic family?

Which component is used to reduce ripples in a DC power supply?

In a low pass filter as below, find the cut-off frequency for the following circuit. Given that \(R1=20\text{k}\Omega\), \(R2=25\text{k}\Omega\), \(C1=10\mu\text{F}\).