Discrete Time Convolution MCQ

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• Which method is close to a graphical method for discrete time convolution?
  ক

  Matrix method only

  খ

  Tabular method

  গ

  Tabular method and matrix method

  ঘ

  Summation method
• Which method uses sum of diagonal elements for discrete time convolution?
  ক

  Matrix method only

  খ

  Graphical method and tabular method

  গ

  Graphical method, tabular method and matrix method

  ঘ

  Graphical method, tabular method, matrix method and summation method
• How can we solve discrete time convolution problems?
  ক

  The graphical method only

  খ

  Graphical method and tabular method

  গ

  Graphical method, tabular method and matrix method

  ঘ

  Graphical method, tabular method, matrix method and summation method
• How can a parallel connected discrete time system respresented? = x + t + r b) y = x * t * r c) y = x * (t + r) d) y = x + t * r
  ক

  y = x + t + r

  খ

  n

  গ

  n

  ঘ

  n
• How can a cascade connected discrete time system respresented? = x + t + r b) y = x * t * r c) y = x * t + r d) y = x + t * r
  ক

  y = x + t + r

  খ

  n

  গ

  n

  ঘ

  n
• What is the sum of impulses in a convolution sum of two discrete time sequences?
  ক

  Sy = SxSh, Sx=∑x(k) and Sh = ∑h(n-k)

  খ

  Sy = Sx+Sh, Sx=∑x(k-1) and Sh = ∑h(n-k)

  গ

  Sy = Sx-Sh, Sx=∑x(k) and Sh = ∑h(n-k)

  ঘ

  Sy = Sx*Sh, Sx=∑x(n) and Sh = ∑h(n-k)
• What is this property of discrete time convolution? x*h=y, then x*h = x*h = y
  ক

  *h=y, then x*h = x*h = y ] Distributive

  খ

  n

  গ

  n

  ঘ

  n
• What is the distributive property of a discrete time convolution? *h(n) = x1(n)* b) = x1(n)* c) *h(n) = x1(n)* h(n)+ x2(n) * h(n) d) *h(n) = x1(n)* h(n)* x2(n) * h(n)
  ক

  *h(n) = x1(n)*

  খ

  x1(n) + x2(n)

  গ

  x1(n) + x2(n)

  ঘ

  x1(n) + x2(n)
• What is the associative property of discrete time convolution? *h(n) = x1(n)* b) +h(n) = x1(n) + c) *h(n) = x1(n)* d) h(n) = x1(n)
  ক

  *h(n) = x1(n)*

  খ

  x1(n) * x2(n)

  গ

  x1(n) * x2(n)

  ঘ

  x1(n) * x2(n)
• What is the commutative property?
  ক

  x(n)*h(n)=h(n)*x(n)

  খ

  x(n)+h(n)=h(n)+x(n)

  গ

  x(n)**h(n)=h(n)**x(n)

  ঘ

  x(n)h(n)=h(n)x(n)
• What is the convolution of a signal with an impulse?
  ক

  Signal itself

  খ

  Impulse

  গ

  A new signal

  ঘ

  Signal multiplied by impulse
• Choose the properties which are followed by a discrete time convolution?
  ক

  Associative, commutative, distributive

  খ

  Associative

  গ

  Commutative and distributive

  ঘ

  Distributive and associative
• What is the convolution of x=e-n2 and h=n2?
  ক

  =e-n2 and h=n2? ] 5.318n2 + .123

  খ

  n

  গ

  n

  ঘ

  n
• What is a convolution sum? h, k from -∞ to +∞ b) ∑x*∑h, k from -∞ to +∞ c) ∑x+∑h, k from -∞ to +∞ d) ∑∑xh, k from -∞ to +∞
  ক

  ∑xh, k from -∞ to +∞

  খ

  k

  গ

  k

  ঘ

  k
• Choose the correct equation for finding the output of a discrete time convolution? = ∑xh, k from 0 to ∞ b) y = ∑xh, k from -∞ to +∞ c) y = ∑xh, k from 0 to ∞ d) y = ∑xh, k from -∞ to +∞
  ক

  y = ∑xh, k from 0 to ∞

  খ

  n

  গ

  n

  ঘ

  n
• What are the tools used in a graphical method of finding convolution of discrete time signals?
  ক

  Plotting, shifting, folding, multiplication, and addition in order

  খ

  Scaling, shifting, multiplication, and addition in order

  গ

  Scaling, multiplication and addition in order

  ঘ

  Scaling, plotting, shifting, multiplication and addition in order
• How is discrete time convolution represented? + h b) x – h c) x * h d) x + h
  ক

  x + h

  খ

  n

  গ

  n

  ঘ

  n
• Is discrete time convolution possible?
  ক

  True

  খ

  False