A 5-point sequence x[n] is given as
x[-3] = 1, x[-2] = 1, x[-1] = 0, x[0] = 5, x[1] = 1.
Let X(e^jω) denote the discrete-time Fourier transform of x[n]. The value of $$\int\limits_{ - \pi }^\pi {X\left( {{e^{j\omega }}} \right)} d\omega $$

The Fourier transform of a real valued time signal has

The RMS value of a rectangular wave of period T, having a value of +V for a duration, T₁(< T) and -V for the duration, T - T₁ = T₂ equals

A continuous time function x(t) is periodic with period T. The function is sampled uniformly with a sampling period T_s. In which one of the following cases is the sampled signal periodic?

The phase response of a passband waveform at the receiver is given by
$$\varphi \left( f \right) = - 2\pi \alpha \left( {f - {f_c}} \right) - 2\alpha \beta {f_c},$$
where f_c is the centre frequency, and α and β are positive constants. The actual signal propagation delay from the transmittance to receiver is