MATLAB Mock Test 10 - Sanfoundry

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Question 1 of 10

1. 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 sinusoid of a frequency 1Hz

A sinusoid of a frequency of 17 Hz

A sinusoid of a frequency of .001 Hz

Error

Question 1 of 10

Question 2 of 10

2. What is the output of the following code?

T=0:1:9;
stem(T);

r[n]-r[n-9]-9u[n-9]

Error

A ramp function

r[n]-r[n-9]

Question 2 of 10

Question 3 of 10

3. 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<b

a=b

a>b

Cannot be determined

Question 3 of 10

Question 4 of 10

4. What is the output of the following code?

conv(3,9)

Error

Question 4 of 10

Question 5 of 10

5. What is the output of the following code?

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

An impulse response of ramp function for a time from 0:18

An impulse response of unit ramp function for a time from 0:17

An impulse response of step for a time from 0:16

Error in 3rd line

Question 5 of 10

Question 6 of 10

6. The Discrete Transfer Fcn1 is using a ramp function.

False

True

Question 6 of 10

Question 7 of 10

7. If x(t-5)=0 for t<5 = A for t>=5, the signal is ___________

Causal

Cannot be determined

Linear, Time Invariant and Causal

Symmetric

Question 7 of 10

Question 8 of 10

8. What is the output of the following code?

P=tf([1 2],[3 4]);
Q=tf([1 2],[3 4]);
Z=P.Q;

Z is the response of the system whose pole is at s=-4/3

Z is the response of the system whose zeros are at s=-4/3

Z is the response of the system whose poles are at s=-4/3 & s=+4/3

Z is the response of the system whose pole is at s=4/3

Question 8 of 10

Question 9 of 10

9. The settling time is a measure of _________

The speed of reaching second overshoot

The speed of reaching maximum overshoot

The speed of reaching stead state

Nothing

Question 9 of 10

Question 10 of 10

10. The convolution of a discrete signal with itself is _________

is not possible

Doubling the signal

Squaring the signal

Adding two signals

Question 10 of 10