Signals Systems Past Papers 1
Paper: Signals Systems
Time Allowed: 3 hours
Examination:
Total Marks: 70, Passing Marks (35)
Q 1: What are the Basic System Properties? Explain.
Q 2: Convolve the following signals
h(t) = e-at u(t) where a > 0
x(t) = e-btu(t) where b> 0
Q 3: Explain in detail Pulse Amplitude modulation and Sinusoidal Frequency Modulation with the help of
Examples.
Q 4: Explain properties of Laplace transform.
Q 5: Explain sampling theorem. How signal can be reconstructed from samples using interpolation.
Q 6: Explain Linearity, time shifting, time reversal and time scaling properties of continues time Fourier
series.
Q 7: Explain properties of LTI system in detail.
Q 8: Write short notes on any two of the following.
- Periodic and Aperiodic Signals
- Aliasing of the signal.
- Frequency Division Multiplexing
Signals Systems Important Questions from Guess Papers 2
Paper: Signals Systems
Time Allowed: 3 hours
Examination:
Total Marks: 70, Passing Marks (35)
Q.1 True/False. (14)
a. Communication is the process of exchanging information.
b. Optical media communication channels are used for audio or video analog signals.
.
c. Simplex communication refers to a one-way transmission type system.
d. Modulation makes the information signal more compatible with the medium.
e. Analog signals vary continuously.
f. A complex Exponential Signal is Three Dimensional Signal.
g. A system that require memory is called dynamic system.
Q.2 Derive the Equation for Energy & power in Signal and System? . (14)
Q.3 X(t) = Cost + Sint + CostSint ?. (7+7)
Find Even & Odd Component Of Signal ?
Q.4
Find i) x(t-1)
ii) x(2t+1)
iii) x(4-t/2)
iv) x(t+1)
.Q.5 What is signal & System. Explain. (14)
Q.6 Find the cofficient of Fourier Series? (14)
Q.7 Find Discrete Time Fourier Trasnform? (14)
X[n] = an u[n]
Q.8 Write short notes on any two of the following (7+7)
(a) Fourier Series
(b) Continous and Discrete-time signal
(c) Unit Step & Unit Impulse