ECE220- SIGNAL AND SYSTEMS
CA1 test- Assignment Based
Section-E2001
Max Marks- 30
Date of allotment: - September 18, 2021 (SATURDAY)
Date of submission: - September 25, 2021 (SATURDAY)
ONLINE MODE SUBMISSION
 Copied assignments will be given zero marks
 No submission will be consider after due date
 On each page of your assignment, keep name as well as roll number
 After writing the answers of all questions, take snapshot of that answer sheets
and make one single file as word or pdf
Q1: Write a short note on the following signals:
a) Unit step function
b) Signum function
(5)
Q2: Find whether the following signal is periodic or not? If periodic, calculate the
fundamental period?
(5)




3 cos17  t    2 sin 19 t  
3
3


Q3: Find the power of the signal?
(5)
x(t) 
n
 c k e jt
k  n
Q4: Draw the sketch of the following signal:
(5)
a) u ( t  4) u (  t  4)
b) r (t )  2r (t  1)
Q5: Draw the graph of y(t)= x(2t+1)?
(5)
x(t)
2
1
-3
-2
-1
0
-1
1
t
Q6: Check whether the system is:
a) Static or dynamic
b) Linear or non-linear
c) Causal or non-causal
d) Time-invariant or time-variant
y( t )  at 2 x ( t )  bt x ( t  4)
(5)