Signals and Systems Questions

• A function having frequency f is to be sampled. The sampling time T should be
• Two function g1(t) and g2(t) with correlation of 6 has average power of 4 and 5 respectively. The power of g1(t) + g2(t) is
• If I (s) , the final value of i(t) is
• The signal defined by the equations f(t) = 0 for t < 0, f(t) = E for 0 ≤ t ≤ a and f(t) = 0 for t > a is
• Let x(t) and y(t) with F.T. x(f) and y(f) respectively be related as shown in figure Then y(f) is
• A voltage wave having 5% fifth harmonic content is applied to a series RC circuit. The percentage fifth harmonic content in the current wave will be
• The system with given pole-zero diagram is
• If £[f(t)] = F(s), then £[f(t - T)] =
• As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes
• An energy signal has G(f) = 10. Its energy density spectrum is
• A signal m(t) is multiplied by a sinusoidal waveform of frequency fc such that v(t)=m(t) cos 2pfct If Fourier transform of m(t) is M(f), Fourier transform of v(t) will be
• The analog signal m(t) is given below m(t) = 4 cos 100 pt + 8 sin 200 pt + cos 300 pt, the Nyquist sampling rate will be
• Which one is a linear system?
• A pole zero pattern of a certain filter is shown in figure. This filter must be
• Double integration of a unit step function would lead to
• What about the stability of system in
• The period of the function cos is
• Z transform is a non-linear operation.
• For the discrete time system of the given figure
• In the given figure the ratio T/d is the duty factor.