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

If the highest modulation frequency is 5 kHz, find out bandwidth.
A transfer function of control system does not have pole-zero cancellation. Which one of the following statements is true?
Which of the following analog modulation schemes requires the minimum transmitted power and minimum channel bandwidth?
In PCM, if the number of quantization levels is increased from 4 to 64, then the bandwidth requirement will approximately equal to
Routh Hurwitz criterion is used to determine
If the characteristic equation of a closed-loop system is \( s^2 + 2s + 2 = 0 \), then the system is
Consider a stable linear time-invariant (LTI) system with a transfer function G(s). Which of the following statements regarding Bode and Nyquist plots is true?
In a Proportional-Integral-Derivative (PID) controller
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?
In the signal flow graph of figure \( \frac{y}{x} \) equals
signal flow graph of figure
A signal is processed by a causal filter with transfer function \( G(s) \). For a distortion-free output signal waveform, \( G(s) \) must
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 $s-plane$?
The polar plot of a transfer function passes through the critical point (+1,0). Gain margin is
According to Nyquist stability criterion, where should be the position of all zeros of \( G(s) \) corresponding to \( s \)-plane?
Which type of control system uses both feedforward and feedback control strategies?
Find the initial value, if it exists of the signal with Laplace transform given below:
\[ X(s) = \frac{s + 4}{s^2 + 3s + 5} \]
A discrete-time signal \( x[n] = \sin(\pi n^2) \), where \( n \) is an integer, is
As \( x \) is increased from \( -\infty \) to \( \infty \), the function \( f(x) = \frac{e^x}{1+e^x} \) behaves as
Fourier transform of \( x(t) = e^{-at}u(t - 2) \) is
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
Which of the following system is not stable with input \( x(n) \) and output \( y(n) \)?
One example of the use of an S-R flip-flop is