* QUIZ - Topic I-III

Answer all questions. Each question only has 1 correct answer. The correct answers for this exercise is given in the attachment.

Q1: Which of the process is not parts of an Engineering process?

A) Model System

B) Analyzed System

C) Duplicate System

D) Test System

Q2: All the given keywords describe a "Signal" except?

A) physical quantity

B) varying with time

C) Carry information

D) Constant propagation

Q3: All the following answers are system/processor except?

A) Human body

B) Software algorithm

C) Microphone

D) Animal voice

Q4: All the following statements are true about continuous time signal except?

A) The amplitude can be infinite value

B) It has same amplitude for each time, t=T (period of signal)

C) Signal appears of certain instant of times, t

D) Signal can be all positive values

Q5: Each of the following equations are true to describe the given signal except?

A) x(t) = 2 cos (ωt+2π)

B) x(t) = -2 sin (ωt-π/2)

C) x(t) = 2 sin (ωt-π/2)

D) x(t) = -2 sin (ωt+3π/2)

Q6: What is the correct equation for x(t) for the given figure?

A) x(t) = (t-1/2)u(t-1/2)-(t+1/2)u(t+1/2)+u(t-1/2)

B) x(t) = (t+1/2)u(t+1/2)-(t+1/2)u(t-1/2)+u(t-1/2)

C) x(t) = (t+1/2)u(t+1/2)-(t-1/2)u(t+1/2)+u(t-1/2)

D) x(t) = (t+1/2)u(t+1/2)-(t-1/2)u(t+1/2)-u(t-1/2)

Q7: Figure shows a set of impulse function. Define x(t)

A) x(t) = -2δ(t+1)+δ(t)+δ(t-2)

B) x(t) = 2δ(t-1)+2δ(t)+δ(t+2)

C) x(t) = 2δ(t+1)+δ(t)+δ(t-2)

D) x(t) = 2δ(t+1)+2δ(t)+δ(t-2)

Q8: Figure shows a triangular function. Define p(𝒙):

A) p(x)=(x+1)u(x)-xu(x-1)+(x-1)u(x-1)-(x-2)u(x-2)

B) p(x)=xu(x)-(x-1)u(x-1)+(x+1)u(x-1)-(x+1)u(x-2)

C) p(x)=xu(x)-xu(x-1)+(x+2)u(x-1)-(x+2)u(x-2)

D) p(x)=xu(x)-xu(x+1)+(x-2)u(x-1)-(x-2)u(x-2)

Q9: Define y1(t) in term of x(t).

A) y1(t)=x(0.5t)

B) y1(t)=x(1.5t)

C) y1(t)=0.5x(t)

D) y1(t)=x(2t)

Q10: Define y(t) in term of x(t).

A) y(t)=x(-2t-1)

B) y(t)=x(-2t+1)

C) y(t)=x(-0.5t-1)

D) y(t)=x(-0.5t+1)

Q11: Define y(t) in term of x(t).

A) y(t)=x(t+1)

B) y(t)=1+x(t)

C) y(t)=x(t)-1

D) y(t)=1-x(t)

Q12: Define y(t) in term of x(t).

A) y(t)=2x(t)+1

B) y(t)=x(-2t)+1

C) y(t)=-2x(t)+2

D) y(t)=-2x(t)+1