Question 21 : x(n)*(h1(n)*h2(n))=(x(n)*h1(n))*h2(n)
1. True
2. False
3.
4.
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Question 22 : The output signal when a signal x(n)=(0,1,2,3) is processed through an 'Delay' system is:
1. (3,2,1,0)
2. (1,2,3,0)
3. (0,1,2,3)
4. None of the mentioned
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Question 23 : What is the condition for a signal x(n)=Brⁿ where r=e^αT to be called as an decaying exponential signal?
1. 0<r<∞
2. 0<r<1
3. r>1
4. r<0
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Question 24 : 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:
1. Delayed
2. Advanced
3. No operation
4. None of the mentioned
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Question 25 : x(n)*[h1(n)+h2(n)]=x(n)*h1(n)+x(n)*h2(n)
1. True
2. False
3.
4.
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Question 26 : The phase function of a discrete time signal x(n)=aⁿ, where a=r.e^jθ is:
1. tan(nθ)
2. nθ
3. tan^-1(nθ)
4. None of the mentioned
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Question 27 : The system described by the input-output equations y(n)=x(-n) is a causal system.
1. True
2. False
3.
4.
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Question 28 : A real valued signal x(n) is called as anti-symmetric if:
1. x(n)=x(-n)
2. x(n)=-x(-n)
3. x(n)=-x(n)
4. None of the mentioned
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Question 29 : If x(n) is a discrete-time signal, then the value of x(n) at non integer value of 'n' is:
1. Zero
2. Positive
3. Negative
4. Not defined
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