Question 1
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Pass Ratio : 100%
Which of the following is the rational system function of an LTI system characterized by the difference equation y(n)=-\\(\\sum_{k=1}^N a_k y(n-k)+\\sum_{k=0}^N b_k x(n-k)\\)?
Explanation: The difference equation of the LTI system is given as
Question 2
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Pass Ratio : 100%
Which of the following refers the number of memory locations required to store the system parameters, past inputs, past outputs and any intermediate computed values?
Explanation: Memory requirements refers the number of memory locations required to store the system parameters, past inputs, past outputs and any intermediate computed values.
Question 3
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Pass Ratio : 100%
Finite word length effects refer to the quantization effects that are inherent in any digital implementation of the system, either in hardware or software.
Explanation: The parameters of the system must necessarily be represented with finite precision. The computations that are performed in the process of computing an output from the system must be rounded off or truncated to fit within the limited precision constraints of the computer or hardware used in the implementation. Thus, Finite word length effects refer to the quantization effects that are inherent in any digital implementation of the system, either in hardware or software.
Question 4
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Pass Ratio : 100%
The general linear constant coefficient difference equation characterizing an LTI discrete time system is?
Explanation: We know that, the general linear constant coefficient difference equation characterizing an LTI discrete time system is given by the expression
Question 6
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Pass Ratio : 100%
Which of the following are called as finite word length effects?
Explanation: All the three of the considerations given above are called as finite word length effects.
Question 7
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Pass Ratio : 100%
The number of times a fetch from memory is performed per output sample is one of the factor used in the implementation of the system.
Explanation: According to the recent developments in the design and fabrication of rather sophisticated programmable DSPs, other factors, such as the number of times a fetch from memory is performed or the number of times a comparison between two numbers is performed per output sample, have become important in assessing the computational complexity of a given realization of a system.
Question 10
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Pass Ratio : 100%
The factors Computational complexity, memory requirements and finite word length effects are the ONLY factors influencing our choice of the realization of the system.
Explanation: Apart from the three factors given in the question, other factors such as, whether the structure or the realization lends itself to parallel processing or whether the computations can be pipelined are also the factors which influence our choice of the realization of the system.