19ECT404 DTSP MCQ

If a signal x(n) is passed through a system to get an output signal of y(n)=x(n+1), then the signal is said to be ____________

• Delayed

• Advanced

• No operation

• None of the mentioned

The system described by the input-output equation y(n)=nx(n)+bx³(n) is a __________

• Static system

• Dynamic system

• Identical system

• None of the mentioned

If the output of the system of the system at any ‘n’ depends only the present or the past values of the inputs then the system is said to be __________

• Linear

• Non-Linear

• Causal

• Non-causal

Which of the following is the auto correlation of x(n)?

• r_xy(l)=x(l)*x(-l)

• r_xy(l)=x(l)*x(l)

• r_xy(l)=x(l)+x(-l)

• None of the mentioned

The even part of a signal x(t) is?

• x(t)+x(-t)

• x(t)-x(-t)

• (1/2)*(x(t)+x(-t))

• (1/2)*(x(t)-x(-t))

What is the z-transform of the following finite duration signal?

• 2 + 4z + 5z² + 7z³ + z⁴

• 2 + 4z + 5z² + 7z³ + z⁵

• 2 + 4z^-1 + 5z^-2 + 7z^-3 + z^-5

• 2z² + 4z + 5 +7z^-1 + z^-3

What is the ROC of z-transform of finite duration anti-causal sequence?

• z=0

• z=∞

• Entire z-plane, except at z=0

• Entire z-plane, except at z=∞

The z-transform of a sequence x(n) which is given as X(z)=∑∞n=−∞x(n)z−n is known as _____________

• Uni-lateral Z-transform

• Bi-lateral Z-transform

• Tri-lateral Z-transform

• None of the mentioned

What is the one sided z-transform of x(n)=δ(n-k)?

• z^-k

• z^k

• 0

• 1

If all the poles of H(z) are inside the unit circle, then the system is said to be ____________

• Only causal

• Only BIBO stable

• BIBO stable and causal

• None of the mentioned