1
GATE ECE 2024
MCQ (More than One Correct Answer)
+1
-0.33

For a causal discrete-time LTI system with transfer function

$H(z) = \frac{2z^2 + 3}{\left(z + \frac{1}{3}\right)\left(z - \frac{1}{3}\right)}$

which of the following statements is/are true?

A

The system is stable.

B

The system is a minimum phase system.

C

The initial value of the impulse response is 2.

D

The final value of the impulse response is 0.

2
GATE ECE 2023
MCQ (Single Correct Answer)
+1
-0.33

Consider a system with input $$x(t)$$ and output $$y(t) = x({e^t})$$. The system is

A
Causal and time invariant.
B
Non-causal and time varying.
C
Causal and time varying.
D
Non-causal and time invariant.
3
GATE ECE 2017 Set 2
MCQ (Single Correct Answer)
+1
-0.3
An LTI system with unit sample response
$$h\left( n \right) = 5\delta \left[ n \right] - 7\delta \left[ {n - 1} \right] + 7\delta \left[ {n - 3} \right] - 5\delta \left[ {n - 4} \right]$$ is a
A
low pass filter
B
high pass filter
C
band pass filter
D
band stop filter
4
GATE ECE 2017 Set 1
MCQ (Single Correct Answer)
+1
-0.3
Consider a single input single output discrete-time system with $$h\left[ n \right]\,$$ as input and $$y\left[ n \right]\,$$ as output, where the two are related as
$$y\left[ n \right]\, = \left\{ {\matrix{ {n\left| {x\left[ n \right]} \right|,} & {for\,\,0 \le n \le 10} \cr {x\left[ n \right] - x\left[ {n - 1} \right],} & {otherwise,} \cr } } \right.$$

Which one of the following statements is true about the system?

A
It is causal and stable
B
It is causal but not stable
C
It is not causal but stable
D
It is neither causal nor stable
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