1. Is the system y(t) = Rx(t), where R is a arbitrary constant, a memoryless system?

a) Yes

b) No

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2. Does the following discrete system have the parameter of memory, y[n] = x[n-1] + x[n] ?

a) Yes

b) No

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3. y[t]= ∫x[t],t ranges from 0 to t. Is the system a memoryless one?

a) Yes

b) No

c) Both memoryless and having memory

d) None of the Mentioned

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4. y(t) = sin(x(t-1)) : Comment on its memory aspects.

a) Having memory

b) Needn’t have memory

c) Memoryless system

d) Time invariant system

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5. Construct the inverse system of y(t) = 2x(t)

a) y(t) = 0.5x(t)

b) y(t) = 2x(t)

c) y(2t) = x(t)

d) y(t) = x(2t)

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6. y(t) = x^{2(t)}. Is y(t) = sqrt(x(t)) the inverse of the first system?

a) Yes

b) No

c) Inverse doesn’t exist

d) Inverse exist

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7. Comment on the causality of y[n] = x[-n].

a) Time invariant

b) Causal

c) Non causal

d) Time varying

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8. y(t) = x(t-2) + x(2-t). Comment on its causality:

a) Causal

b) Time variant

c) Non causal

d) All of the mentioned

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9. Comment on the causality of y[n] = n*x[n].

a) Time invariant

b) Time varying

c) Non causal

d) Causal

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10. Comment on the linearity of y[n] = n*x[n].

a) Linear

b) Only additive

c) Not scalable

d) Non linear

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