Impulse Response – 1 MCQ’s

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This set of MATLAB Multiple Choice Questions & Answers (MCQs) focuses on “Impulse Response – 1″.

1. What is the impulse response of a system whose transfer function is that of pulse function?

a) u(t)+u(t-4)
b) u(t)-u(t-3)
c) u(t)-u(t-4)
d) u(t)-u(t+4)

2. What is the impulse response of a system whose transfer function is that of ramp function delayed by 7 units in time?
a) r(t-7)
b) r(t+7)
c) r(t-3.5)
d) Cannot be determined

3. What is the impulse response till t=16 unit in time of a system whose transfer function is that of the following?

a) 34*r(t-4) + 34*r(t-16)+u(t-16)
b) 34*r(t-4) – 34*r(t+16)-u(t-16)
c) 34*r(t-4) – 34*r(t-16)-u(t-16)
d) 34*r(t-4) – 34*r(t+16)-u(t+16)

4. What is the impulse response of the system whose transfer function is that of a pulse which generates from the following code?

plot(0:12,[zeros(1,4),ones(1,5),zeros(1,4)])

a) u(t-4)+u(t-9)
b) u(t+4)-u(t-9)
c) u(t-4)-u(t+9)
d) u(t-4)-u(t-9)

5. The following figure shows a set of impulse responses. Identify which system provides the greatest delay.

a) Blue
b) Red
c) Delay
d) Purple

6. Which response has the highest amplitude of step function?

a) Yellow
b) Red
c) Blue
d) Data inadequate

7. The following figure shows a set of impulse responses. Identify which system provides the least delay.

a) Blue
b) Red
c) Delay
d) Purple

8. Which response has the least amplitude in the transfer function?

a) Yellow
b) Red
c) Blue
d) Data inadequate

9. Fill the half-filled code snippet to get the following graph:

impulse(1,[1 _], ‘red’);
____;
impulse(1,[1 _], ‘blue’);
impulse(1,[1 _], ‘yellow’);
impulse(1,[1 _], ‘green’);
a) 2, hold, 3,4,5
b) 9, hold, 4,5,2
c) 5, hold, 4,3,2
d) Cannot be determined

10. The o/p of the following two code snippets are ___

i.  impulse(1,[ 6 3])
ii. impulse(1/6,[ 1 .5])

a) Same graphs
b) Different grpahs
c) Amplitude of graph i>ii
d) Amplitude of graph i<ii

11. Fill the half-filled code snippet which generates the following curve:

_______(1,[1 __])
a) impulse, 0, 0
b) impulse, 0
c) impulse, 0 1
d) impulse, 1, 0

12. Choose the correct option after observing the given graph and the code snippet carefully.

impulse(1,[1 _], ‘red’);
hold on;
impulse(1,[1 a], ‘blue’);
impulse(1,[1 b], ‘yellow’);
impulse(1,[1 _], ‘green’);
a) a<b
b) a>b
c) a=b
d) Cannot be determined

13. The poles of the transfer function of a sinusoidal system can represent the frequency of the impulse response of the sinusoidal system.
a) True
b) False

14. Which response would provide a higher stability?
a) A step signal
b) A ramp signal
c) A sinusoidal
d) 1/(s-1)

15. How does the pole of the transfer function change?

a) Goes nearer to the origin for the green curve than the red curve
b) Goes further from the origin for the red curve than the blue curve
c) Goes nearer to the origin for the blue curve than the red curve
d) Goes nearer to the origin for the red curve than the blue curve

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