List of top Electronics and Communication Engineering Questions asked in Andhra Pradesh Post Graduate Engineering Common Entrance Test

The roots of the characteristic equation \(2S^3 + 3S^2 + 4S + 6 = 0\) are
Which one of the following is not the property of root loci?
The open-loop DC gain of a unity negative feedback system with closed-loop transfer function is given by \( \frac{5}{4 + 5s + 13s^2} \), what is the open-loop DC gain?
According to Nyquist stability criterion, where should be the position of all zeros of $G(s)$ corresponding to $s-plane$?
According to Nyquist stability criterion, where should be the position of all zeros of \( G(s) \) corresponding to \( s \)-plane?
The polar plot of a transfer function passes through the critical point (+1,0). Gain margin is
A signal is processed by a causal filter with transfer function \( G(s) \). For a distortion-free output signal waveform, \( G(s) \) must
Which type of control system uses both feedforward and feedback control strategies?
As \( x \) is increased from \( -\infty \) to \( \infty \), the function \( f(x) = \frac{e^x}{1+e^x} \) behaves as
A discrete-time signal \( x[n] = \sin(\pi n^2) \), where \( n \) is an integer, is
Which of the following system is not stable with input \( x(n) \) and output \( y(n) \)?
Fourier transform of \( x(t) = e^{-at}u(t - 2) \) is
Find the initial value, if it exists of the signal with Laplace transform given below:
\[ X(s) = \frac{s + 4}{s^2 + 3s + 5} \]
What is the fundamental angular frequency in rad/sec for the given waveform?
fundamental angular frequency in rad/sec
If \( x[n] = \{1, 0, -2, 3\} \) and \( y[n] = x[n] \ast x[n] \), the maximum value of \( y[n] \) is
One example of the use of an S-R flip-flop is
What are the conditions called which are required for a signal to fulfill to be represented as Fourier series?
The primary function of a clamper circuit is
What is the period of the following signal, \( x(t) = \sin(18\pi t + 78^\circ) \)?
A PAM signal can be detected by using
A function \( x(t) \) is said to have half-wave odd symmetry if
The impulse response of a continuous time system is given by \( h(t) = \delta(t - 1) + \delta(t - 3) \). The value of the step response at \( t = 2 \) is
The number of memory cycles required to execute the following 8085 instructions
I. STA 3000 H
II. LXI D, 3000 H
The logic function implemented by the circuit shown in the Figure below is (ground implies a logic '0')
logic function implemented
The logic circuit shown in Figure below is a
logic circuit