Digital Signal Processing set 6

Que.What is the inverse laplace transform of Z from the following?
P=tf([1],[1 0 0]);
Q=tf([1],[1 0]);
Z=P.Q;

a. t²
b. t²/2
c. t³
d. Error
Discussion
Que.What is the output of the following code?
P=tf([1 2],[3 4]);
Q=tf([1 2],[3 4]);
Z=P.Q;
ilpalace(Z)

a. Error
b. t
c. t²
d. Cannot be determined
Discussion
Que.What is the output of the following code?
conv[1 2]ztrans(1,z)

a. 1/z-1
b. 1/z+1
c. z/(z-1)
d. z/(z+1)
Discussion
Que.What is the output of the following code?
syms n;ztrans(2^n,z)

a. z/(z-2)
b. z/(z+2)
c. z/(2-z)
d. z/(2+z)
Discussion
Que.What is the output of the following code?
ztrans('[1 0 1 0 1]',z)

a. [ z/(z – 1), 0, z/(z – 1), 0, z/(z – 1)]
b. [ z/(z + 1), 0, z/(z – 1), 0, z/(z – 1)]
c. [ z/(z – 1), 0, z/(z – 1), 0, z/(z -+1)]
d. [ z/(z + 1), 0, z/(z – 1), 0, z/(z + 1)]
Discussion
Que.What is the output of the following code?
>>syms s;
>> ztrans('n',s)

a. s/(s-1)²
b. ns/(s-1)²
c. s/(ns-1)²
d. Error
Discussion
Que.What is the output of the following code?
>> ztrans('n',s)

a. s/(s-1)²
b. ns/(s-1)²
c. Error
d. s/(s+1)²
Discussion
Que.What is the output of the following code?
ztrans([1,2,3 4*z],z)

a. [ z/(z – 1), (2*z)/(z – 1), (3*z)/(z – 1), (4*z)/(z – 1)²]
b. [ z/(z + 1), (2*z)/(z + 1), (3*z)/(z + 1), (4*z)/(z – 1)²]
c. [ z/(z – 1), (2*z)/(z – 1), (3*z)/(z – 1), (4*z)/(z + 1)²]
d. [ z/(z – 1), (2*z)/(z – 1), (3*z)/(z – 1) (4*z)/(z – 1)²]
Discussion
Que.The R.O.C. of impulse function is _________
a. The entire z-plane
b. Interior to the unit circle |z|=1
c. Exterior to the unit circle |z|=1
d. Between the unit circle |z|=1 and |z|=∞
Discussion
Que.What is the output of the following code?
ztrans(exp(2*n),z)

a. z/(z – exp(2))
b. z/(z – exp(-2))
c. z/(z + exp(-2))
d. z/(z + exp(2))
Discussion