List of top Electronics and Communication Engineering Questions asked in Telangana State Post Graduate Engineering Common Entrance Test

Match the following with respect to region of convergence
\( x(n) \) ROC
AInfinite duration causal sequenceIEntire z-plane except at \( z = 0 \)
BFinite duration causal sequenceIIEntire z-plane except at \( z = \infty \)
CInfinite duration anticausal sequenceIII\( |z| > \alpha \), exterior of a circle of radius \( \alpha \)
DFinite duration anticausal sequenceIV\( |z| < \beta \), interior of a circle of radius \( \beta \)
Which of the following is not correct with respect to Z-transforms?
The condition for orthogonality of two functions \( x_1(t) \) and \( x_2(t) \) in terms of correlation is
Consider a causal LTI system with impulse response \( h(t) = e^{-bt}u(t) \). Find the output of the system for an input \( x(t) = 3e^{-at}u(t) \).
The Fourier transform of the following signal is \[ x(t) = \begin{cases} 1+\cos \pi t & |t|<1 \\ 0 & |t|>1 \end{cases} \]
Which of the following statement is not correct?
The amplitude and phase spectrum of exponential Fourier Series about vertical axis respectively, is
The exponential Fourier series coefficient \( C_{-n} \) in terms of trigonometric Fourier coefficients is
Which of the following system is non-causal sytem? (Typo: "sytem" should be "system")
Driving point impedance of the function \( F(s) = \frac{(s+k_1)(s+k_2)(s+k_3)}{(s+1)(s+2)(s+3)} \) is
When two, two-port networks are connected in series, then
A transfer function is given by \( H(s) = \frac{2(s+2)(s+4)}{(s+3)(s+5)(s+7)} \). Then the transfer function becomes zero when
For a series RLC circuit which of the following statement is not correct?
Obtain the inverse Laplace transform of \( F(s) = \frac{1}{s^2(s+2)} \)
The values of B and D of ABCD parameters of two port network respectively are
values of B and D of ABCD parameters of two port network
The function \( \frac{dq}{dv} \) is called incremental then it is
A coil of resistance \(12 \Omega\) and inductance 18 H is suddenly connected to a dc supply of 30 V. Calculate time constant
If three equal resistances of \(12\Omega\) are connected in Delta, then each resistance of the equivalent Star is
Which factor determines the range resolution of a radar?
A wave travelling in conducting medium, if its amplitude decreases by a factor of _____ it is called penetration depth of the medium.
A DSB-SC signal can be demodulated using
The state model is _____, the transfer function of the system is ____
Which of the following is not correct with respect to Phase Lead Compensator?
If the contour of the open-loop transfer function G(s)H(s) corresponding to the Nyquist contour in the s-plane encircle to the point ____, the closed loop system is stable (The blank should be the critical point \((-1+j0)\) or just \(-1\).)
The gain cross over frequency is the frequency at which the \(|G(s)H(s)|\) is (Note: s should be \(j\omega\) for frequency response magnitude) \(|G(j\omega)H(j\omega)|\)