DSP 1 EXAM WITH CORRECT ACTUAL QUESTIONS AND CORRECTLY WELL DEFINED ANSWERS LATEST ALREADY GRADED A+

DSP 1 EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+



SECTION A: MULTIPLE CHOICE QUESTIONS (1–30)
Q1. A discrete-time signal is defined as:


A. Continuous in time
B. Defined at integer values
C. Analog signal
D. Periodic only


Answer: B
Explanation: A discrete-time signal exists only at specific
time intervals (e.g.,
𝑛
=
0

,,
1
,
2
,
.
.
.
n=0,1,2,...).


Q2. The unit step signal is denoted as:


A. δ[n]
B. u[n]
C. x[n]
D. h[n]


Answer: B
Explanation:
𝑢
[

,𝑛
]
u[n] equals 1 for
𝑛
≥
0
n≥0, otherwise 0.


Q3. The unit impulse signal is:


A. u[n]
B. δ[n]
C. x[n]
D. sin[n]


Answer: B
Explanation: δ[n] = 1 at n=0 and 0 elsewhere.


Q4. A system is linear if it satisfies:


A. Stability

, B. Superposition
C. Memory
D. Periodicity


Answer: B
Explanation: Linearity = additivity + homogeneity.


Q5. Convolution is used to:


A. Differentiate signals
B. Multiply signals
C. Find system output
D. Sample signals


Answer: C
Explanation: Output of LTI system = convolution of input
and impulse response.


Q6. Length of convolution result:


A. N+M