# Impulse Response – 2 MCQ’s

This set of MATLAB Multiple Choice Questions & Answers (MCQs) focuses on “Impulse Response – 2″.

1. The impulse response of a parabola _________
a) will have 3 poles in the s-plane
b) will have 2 poles in the s-plane
c) will have 4 poles in the s-plane
d) will have no poles in the s-plane

2. The step response of the impulse response of a ramp function will be ________
a) a parabolic function
b) an exponential function
c) a sinusoidal function
d) a sinc function

3. The impulse response of a sinusoid ________
a) will have 2 poles in the s-plane
b) will have 3 poles in the s-plane
c) will have 1 pole frequency in the s-plane
d) will have only 1 conjugate pole in the s-plane

4. The impulse response does not take account of the transient response of the system.
a) True
b) False

5. The impulse response of the transfer function 1 is ________
a) an impulse function
b) a step function
c) a pulse function
d) cannot be determined

6. In MATLAB, the impulse response of the step response of a system is ___ to the step response of the impulse response of the system.
a) Equal
b) Not Equal
c) Greater
d) Lesser

7. What is the output of the following code?

```>>p=ilaplace(s/s);
>>laplace(p)```

a) dirac(1,t)
b) dirac[1,t]
c) dirac{1,t}
d) Cannot be determined

```>>p=ilaplace(1);
>>laplace(p)```

a) 1
b) Impulse function
c) Error
d) Cannot be determined

9. What is the output of the following code?

```>>t=(0:17);
>>o=dirac(t)==Inf;
>>q=o*1;
>>conv(q,t)```

a) t followed with 17 zeros
b) t followed with 18 zeros
c) 1
d) Error

10. The impulse response is the result of the transfer function of the system.
a) True
b) False

11. What is the output of the following code?

```>>t=(0:17);
>> p=dirac(0)==Inf;
>> q=p*1;
>> conv(q,t)```

a) An impulse response of step for a time from 0:16
b) An impulse response of unit ramp function for a time from 0:17
c) An impulse response of ramp function for a time from 0:18
d) Error in 3rd line

12. What is the slope of the ramp function?

a) 3
b) 2
c) 1
d) 6

13. What is the output of the following code?

```>> p=dirac(0)==Inf;
>> t=(0:.001:17);
>> q=p*1;
>> conv(q,sin(2*pi*t));
>> plot(t,ans)```

a) A sinusoid of a frequency 1Hz
b) A sinusoid of a frequency of 17 Hz
c) A sinusoid of a frequency of .001 Hz
d) Error

14. What does the following relate to?

a) Step response implies integrating the transfer function
b) Impulse response shows the delay in the above block diagram
c) Nothing is observed
d) The integration of impulse is a ramp function

15. What is the output at the scope?

a)
b)
c)
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