* 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