List of top Instrumentation Engineering Questions on Statistical analysis

In order to compute an N-point DFT, the number of complex multiplications and complex additions required respectively are

The Fourier transform of the continuous time signal $x(t)$ as shown in the figure is

The z-transform of the discrete time signal $x(n) = u(-n)$ is

The z-transform of the discrete time signal $x(n) = u(n) * u(n)$ with '$*$' being convolution is

If DTFT of $x_1(n)$ is $X_1(\omega)$, then the DTFT of the signal $x_2(n) = nx_1(n)$ is

The output of two digital filters can be added or the same effect can be achieved by

The root mean squared value of $x(t) = 3 + 2\sin(t)\cos(2t)$ is

The period of signal $x(t) = 10\sin 5t - 4\cos 9t$ is

The Fourier transform of signal $\delta(t+1) + \delta(t-1)$ is

Which of the following error is not a systematic error?