Digital Signal Processing set 5

Que.The output of p=conv([ones(1,50)],[ones(1,100)]) and p=conv([ones(1,100)],[ones(1,50)]) are same.
a. True
b. False
c. May be True or False
d. Can’t say
Que.The signal get shifted by 1 units in time due to the following code: conv([ 1 2 3],[ 0 1 0 ]).
a. True
b. False
c. May be True or False
d. Can’t say
Que.After what instant in time will the signal output become zero?
p=conv([ones(1,100)],[ones(1,50),zeros(1,50)]);

a. 150
b. 149
c. 151
d. Error
Que.For a causal L.T.I. system, the impulse response is 0 for _________
a. t<0
b. t=0
c. t>0
d. Always
Que.The convolution of a discrete signal with itself is _________
a. Squaring the signal
b. Doubling the signal
c. Adding two signals
d. is not possible
Que.The convolution of a function with an impulse function delayed to an instant 3 in time results in ____________
a. An advance in the function by 3 units in time
b. The function itself
c. A delay in the function by 3 units in time
d. Cannot be determined
Que.What is the output of the following code?
a=con([1 2],[1 2]);
b=cconv([1 2],[1 2]);

a. a=b
b. a
c. a>b
d. a!=b
Que.A continuous signal can be represented as the product of an impulse function and the signal itself.
a. True
b. False
c. May be True or False
d. Can’t say
Que.What is the output of the following code?
cconv([1 2],[0 1 0])

a. [0 1 2 0]
b. [1 2 0 0]
c. [1 2 0 0]
d. [0 0 1 2]
Que.What is the output of the following code?
P=tf([1 2],[3 4]);
Q=tf([1 2],[3 4]);
Z=P.Q;

a. Z is the response of the system whose pole is at s=-4/3
b. Z is the response of the system whose pole is at s=4/3
c. Z is the response of the system whose poles are at s=-4/3 & s=+4/3
d. Z is the response of the system whose zeros are at s=-4/3