MCQs: The DFT is preferred for
1) Its ability to determine the frequency component of the signal
2) Removal of noise
3) Filter design
4) Quantization of signal
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MCQs: Frequency selectivity characteristics of DFT refers to
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MCQs: The Cooley–Tukey algorithm of FFT is a
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MCQs: FFT may be used to calculate
1) DFT
2) IDFT
3) Direct Z transform
4) In direct Z transform
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MCQs: DIT algorithm divides the sequence into
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MCQs: The transformations are required for
1) Analysis in time or frequency domain
2) Quantization
3) Easier operations
4) Modulation
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MCQs: The similarity between the Fourier transform and the z transform is that
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MCQs: The ROC of a system is the
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MCQs: The several ways to perform an inverse Z transform are
1) Direct computation
2) Long division
3) Partial fraction expansion with table lookup
4) Direct inversion
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MCQs: The anti causal sequences have ______ components in the left hand sequences.
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MCQs: For an expanded power series method, the coefficients represent
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MCQs: The IIR filter designing involves
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MCQs: For a system function H(s) to be stable
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MCQs: IIR filter design by approximation of derivatives has the limitations
1) Used only for transforming analog high pass filters
2) Used for band pass filters having smaller resonant frequencies
3) Used only for transforming analog low pass filters
4) Used for band pass filters having high resonant frequencies
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MCQs: The filter that may not be realized by approximation of derivatives techniques are
1) Band pass filters
2) High pass filters
3) Low pass filters
4) Band reject filters
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MCQs: In direct form for realisation of IIR filters,
1) Denominator coefficients are the multipliers in the feed forward paths
2) Multipliers in the feedback paths are the positives of the denominator coefficients
3) Numerator coefficients are the multipliers in the feed forward paths
4) Multipliers in the feedback paths are the negatives of the denominator coefficients
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MCQs: The direct form II for realisation involves
1) The realisation of transfer function into two parts
2) Realisation after fraction
3) Product of two transfer functions
4) Addition of two transfer functions
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MCQs: The cascade realisation of IIR systems involves
1) The transfer function broken into product of transfer functions
2) The transfer function divided into addition of transfer functions
3) Factoring the numerator and denominator polynomials
4) Derivatives of the transfer functions
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MCQs: The advantage of using the cascade form of realisation is
1) It has same number of poles and zeros as that of individual components
2) The number of poles is the product of poles of individual components
3) The number of zeros is the product of poles of individual components
4) Over all transfer function may be determined
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MCQs: Which among the following represent/s the characteristic/s of an ideal filter?
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