Which Of The Following Signal Is The Example For Deterministic Signal Case Study

1. The sampling frequency of the following analog signal, s(t)=4 sin 150πt+2 cos 50πt should be,
a) greater than 75Hz
b) greater than 150Hz
c) less than 150Hz
d) greater than 50Hz

2. Which of the following signal is the example for deterministic signal?
a) Step
b) Ramp
c) Exponential
d) All of the above

3. For energy signals
a) The energy will be finite and power will be infinite
b) The energy will be finite and power will be zero
c) The energy will be zero and power will be infinite
d) Both energy and power will be finite

4. The unit step signal u(n) is delayed by 3 units of time is denoted as,
a) u(n+3) = 1 ; n≥3 = 0 ; n0

7. Which of the following system is causal
a) h(n)=n(0.5)n u(n+1)
b) y(n)=x2(n)-x(n+1)
c) y(n)=x(-n)+x(2n-1)
If the unit step response is(1-e-αt) then the unit impulse response is
a) αe-αt b)α-1 e-αt c)(1-α-1) e-αt d) (1-α) e-αt

26. Which of the following statement is false?
i) The product of two odd signals is an odd signal ii) The product of two even signals is an even signal iii) The product of even and odd signal is an even signal iv) The product of even and odd signal is an even signal

a) i and iii
b) i only
c) iii only
d) iv only

27. Which of the following is a purely even signal?
a) x(t)=eat
b) x(t)=cos Ω0t
c) x(t)=A sin nΩ0t
d) x(t)=t2

28. Which of the following statements are true?
i) The periodic signals are power signals ii) The nonperiodic signals are energy signals iii) for energy signals, the power is zero iv) for power signals, the energy is zero

a) i only
b) i and ii only
c) i, ii and iii only
d) all of the above

29. Which of the following signal is a causal signal?
a) x(n)=A
b) x(n)=n
c) x(n)=u(n)
d) x(n)=e-an

30. The differentiation of unit step signal is
a) ramp signal
b) impulse signal
c) exponential signal
d) parabolic signal

31. The integral of unit impulse signal is
a) infinity
b) zero
c) one
d)
Given that H(s)=e-4s what is the impulse response of the system?
a) ᵟ(t-4)
b) u(t-4)
c) e-4t u(t)
d) e4t u(t)

46. The convolution of e-at u(t) will be equal to,
a) t u(t)
b) e-at u(t)
c) e-2at u(t)
d) te-at u(t)

47. The convolution of u(t) and u(t)will be equal to
a) ᵟ(t)
b) u(t)
c) t u(t)
d) t2 u(t)

48. If X(s), Y(s) and H(s) are Laplace transform of input, output and impulse response of LTI continuous time system respectively then’
a) x(t)=L-1[H(s)/Y(s)]
b) x(t)=L-1[Y(s)/H(s)]
c) x(t)=L-1[1/(H(s)Y(s)]
d) x(t)=L-1[Y(s)H(s)]

49. For a continuous time LTI system which of the following statements are true?
i) The transfer function is ratio of Laplace transform of output and input ii) The transfer function is ratio of Laplace transform of input and output iii) The transfer function is Laplace transform of impulse response

a) i only
b) i and iii only
c) ii only
d) iii only

50. The inverse Laplace transform of X(s)=2/(s2+2s+5) is
a) x(t)=e-t