Which country has been elected to the UNICEF Executive Board, representing the group of Asia-Pacific countries for the term 2016-2018?
Consider two real valued signals, x(t) band-limited to [−500 Hz, 500Hz] and y(t) band-limited to [−1kHz, 1kHz]. For z (t) = x(t). y(t), the Nyquist sampling frequency (in kHz) is __________
The Hilbert transform of x(t)=ej2πft is
The 4-point DFT of the sequence x(n)=cos(nπ/4) is X(k).
Then find the value of
For the pole –zero plot shown in figure represents ________filter
Consider a periodic signal with time period T=2. The derivative of this signal is related to the impulse train with period T=2. It can be shown that
then the value of and are
Consider the following statements regarding a linear system y= f(x1)
1) f(x1+x2)=f(x1) + f(x2)
2) f[x(t+T)]= f[x(t)]+f[x(T)]
Of these statements
The exponential Fourier series coefficient of the periodic signal shown in the figure will be The z-transfrom of a system is If the ROC is |z| < 0.2, then the impulse response of the system is A signal is represented as x (t) whose Laplace transform is denoted by X (s) where The value of signal x (t) at t = 1 sec is __________.
Two systems S1
are cascaded where
S1 : P(n) = 3P(n – 1) + x(n)
S2 : y(n) = k1y(n – 1) + k2P(n)
If the overall input output relation is given by y(n) + 3 y (n – 2) – 4y(n – 2) = 4x (n) then value of K1 + K2 is ……