Digital Signal Processing MCQ

Electronics Engineering MCQs related to Digital Signal Processing.

Digital Signal Processing Multiple Choice Questions: Part 5

Digital Signal Processing Multiple Choice Questions. Part 5 of Digital Signal Processing in Electronics Engineering.

 

Digital Signal Processing Multiple Choice Questions

 

In FIR filter design, which among the following parameters is/are separately controlled by using Kaiser window ??

a. Order of filter (M)
b. Transition width of main lobe
c. Both a and b
d. None of the above

 

For a linear phase filter, if Z1 is zero then what would be the value of Z1-1 or 1/ Z1 ??

a. Zero
b. Unity
c. Infinity
d. Unpredictable

 

Consider the assertions given below. Which among them is an advantage of FIR Filter ??

a. Necessity of computational techniques for filter implementation
b. Requirement of large storage
c. The incapability of simulating prototype analog filters
d. Presence of linear phase response

 

The error in the filter output that results from rounding or truncating calculations within the filter is called ??

a. Coefficient quantization error
b. Adder overflow limit cycle
c. Round off noise
d. Limit cycles

 

The effects caused due to finite word lengths are ??

1) Coefficient quantization error
2) Adder overflow limit cycle
3) Round off noise
4) Limit cycles

a. 1, 2, and 3 are correct
b. 1 and 3 are correct
c. 1 and 4 are correct
d. All the four are correct

 

 

DSP MCQs

 

The Elliptic filters have ??

1) Flat pass band
2) Flat stop band
3) Equiripple pass band
4) Equiripple stop band

a. 1 and 2 are correct
b. 3 and 4 are correct
c. 2 and 3 are correct
d. All the four are correct

 

The Chebyshev filters have ??

1) Flat pass band
2) Flat stop band
3) Equiripple pass band
4) Tapering stop band

a. 1 and 2 are correct
b. 2 and 4 are correct
c. 2 and 3 are correct
d. All the four are correct

 

Correlation is used for ??

1) Computation of average power in waveforms
2) Climatography
3) Identification of binary code word in PCM systems
4) Quantization

a. 1, 2, and 3 are correct
b. 1 and 2 are correct
c. 2 and 3 are correct
d. All the four are correct

 

The nonlinear differential equations are solved using ??

a. Iterative method
b. Cobweb model
c. Phase diagram
d. Power series method

 

A system is said to be marginally unstable if ??

a. None of the zeros of its transfer function lies on the jω axis of s-plane
b. At least one zero of its transfer function lies on the jω axis of s-plane
c. None of the poles of its transfer function lies on the jω axis of s-plane
d. At least one pole of its transfer function lies on the jω axis of s-plane

 

Digital Signal Processing Multiple Choice Questions

 

A system is said to be unstable if ??

a. None of the poles of its transfer function is shifted to the right half of s-plane
b. At least one zero of its transfer function is shifted to the right half of s-plane
c. At least one pole of its transfer function is shifted to the right half of s-plane
d. At least one pole of its transfer function is shifted to the left half of s-plane

 

Discrete cosine transforms (DCTs) express a function or a signal in terms of ??

a. Sum of cosine functions oscillating at different frequencies
b. Sum of cosine functions oscillating at same frequencies
c. Sum of cosine functions at different sampling intervals
d. Sum of cosine functions oscillating at same sampling intervals

 

In Overlap-Add Method with the linear convolution of a discrete-time signal of length L and a discrete-time signal of length M, for a length N, zero-padding should be of length ??

a. L, M > N
b. L, M = N
c. L, M < N
d. L, M < N2

 

The filtering is performed using DFT using ??

1) Limited size or blocks of data
2) Small memory size
3) Large memory size
4) Large segments of data

a. 1, 2, and 3 are correct
b. 3 and 4 are correct
c. 1 and 2 are correct
d. All the four are correct

 

DFT is applied to ??

a. Infinite sequences
b. Finite discrete sequences
c. Continuous infinite signals
d. Continuous finite sequences

 

Digital Signal Processing Multiple Choice Questions

 

The scaling of a sequence x[n] by a factor α is given by ??

a. y[n] = α [x[n]]2
b. y[n] = α x[n2]
c. y[n] = α x[n]
d. y[n] = x[n]x[-n]

 

Superposition of signals in a linear system refers to the ??

a. Output that is a product of all the signals
b. The output is a sum of all the signals
c. The output that is of the highest amplitude of all the signals
d. The output that is of the largest spectrum of all the signals

 

One dimensional signal is a function of ??

a. Multiple independent variables
b. Single independent variable
c. Multiple dependent variables
d. Single dependent variable

 

Two vectors a, b are orthogonal if ??

a. <a,b> = 0
b. <a,b> = <a,b>
c. <a,b> = 1
d. <a,b> = – <a,b>

 

Digital Signal Processing Part 4: MCQ DSP In Electronics

Digital Signal Processing Part 4. Part 4 of Multiple Choice Questions in Electronics Engineering related to Digital Signal Processing.

 

Digital Signal Processing Part 4

 

Which peripheral on C 6 X processor allows buffering of serial samples in memory by port automatically & especially with the assistance of the EDMA controller ??

a. Boot Loader
b. HPI
c. EMIF
d. McBSP

 

In the C6X processor, which external device/s get/s acquire/s interface support by EMIF peripheral ??

a. Synchronous burst
b. Asynchronous devices
c. Externally shared memory devices
d. All of the above

 

In TMS 320 C6x processor architecture, which operation/s is/are performed by the ‘M’ functional unit ??

a. Bit expansion
b. Bit interleaving & deinterleaving
c. Rotation & Variable shifting
d. All of the above

 

In TMS 320 C6x processor architecture, which functional unit is adopted for transferring the data from the register to and from the control register ??

a. L2
b. M2
c. S2
d. D2

 

In DSP Processor, what kind of queuing is undertaken/executed through instruction register and instruction cache ??

a. Implicate
b. Explicate
c. Both a and b
d. None of the above

 

DSP MCQs

 

Program Sequence plays a crucial role in maintaining the track of ___________ ??

a. Program counter increment
b. Conditional branching & looping
c. Subroutine & interrupt handling
d. All of the above

 

How is the sampling rate conversion achieved by factor I/D ??

a. By increase in the sampling rate with (I)
b. By filtering the sequence to remove unwanted images of spectra of original signal
c. By decimation of filtered signal with factor D
d. All of the above

 

In polyphase filter, which kind of realization is/are adopted for three subfilters possessing coefficients ??

a. Cascade
b. Parallel
c. Direct
d. All of the above

 

How is the operating level of sampling rate for the subfilters involved in the polyphase filters ??

a. Low
b. Moderate
c. High
d. None of the above

 

In polyphase filters, the subfilters which share a common delay line results in the reduction of the storage requirement by factor ______ ??

a. 1
b. 2
c. 3
d. 4

 

Digital Signal Processing Part 4

 

For designing a multi-rate LPF with passband 0 to 50 Hz, stopband 60 to 280 Hz, stopband deviation 0.001, passband deviation 0.01, and sampling frequency (fs) = 400 Hz, what would be the value of normalized transition width ??

a. 0.025 Hz
b. 1.25 Hz
c. 1.50 Hz
d. 2.6 Hz

 

Consider the assertions (steps) given below. Which among the following is a correct sequence of designing steps for the sampling rate converters ??

A. Computation of decimation/interpolation factor for each stage.
B. Clarification of anti-aliasing / anti-imaging filter requirements.
C. Designing of a filter at each stage.
D. Calculation of optimum stages of decimation/ interpolation yielding maximum efficient implementation.

a. A, B, C, D
b. C, A, D, B
c. D, A, B, C
d. B, D, A, C

 

In cascade form of realization, how many bits should be used to represent the FIR filter coefficients in order to avoid the quantization effect on filter coefficients ??

a. 5 to 10
b. 12 to 14
c. 20 to 24
d. 28 to 40

 

In the frequency response characteristics of the FIR filter, the number of bits per coefficient should be _________ in order to maintain the same error ??

a. Increased
b. Constant
c. Decreased
d. None of the above

 

In FIR filters, which among the following parameters remains unaffected by the quantization effect ??

a. Magnitude Response
b. Phase Characteristics
c. Both a and b
d. None of the above

 

Digital Signal Processing Part 4

 

Which filters exhibit their dependency upon the system design for stability purposes??

a. FIR
b. IIR
c. Both a and b
d. None of the above

 

In linear phase realization, equal valued coefficients are taken commonly for reducing the requisite number of ________ ??

a. adders
b. subtractors
c. multipliers
d. dividers

 

How is/are the roundoff errors reduced in the digital FIR filter ??

a. By the representation of all products with double-length registers
b. By rounding the results after acquiring the final sum
c. Both a and b
d. None of the above

 

In Gibb’s phenomenon, the ringing effect is predominantly present near the ______ ??

a. bandgap
b. bandedge
c. bandwidth
d. bandshell

 

In the Barlett window, the triangular function resembles the tapering of rectangular window sequence _______ from the middle to the ends ??

a. linearly
b. elliptically
c. hyperbolically
d. parabolically

 

Digital Signal Processing Part 4

 

Which window function is also regarded as ‘Raised-cosine window’ ??

a. Hamming window
b. Hanning window
c. Barlett window
d. Blackman window

 

MCQ On Digital Signal Processing: Q & A

MCQ On Digital Signal Processing Part 3. Multiple Choice Questions in Electronics Engineering related to Digital Signal Processing.

 

MCQ On Digital Signal Processing

 

In the cascaded form of realization, the polynomials are factored into ??

a. a product of 1st-order and 2nd-order polynomials
b. a product of 2nd-order and 3rd-order polynomials
c. a sum of 1st-order and 2nd-order polynomials
d. a sum of 2nd-order and 3rd-order polynomials

 

The magnitude response of the Butterworth filter has ??

1) Flat stopband
2) Flat passband
3) Tapering passband
4) Tapering stopband

a. 1 and 2 are correct
b. 2 and 4 are correct
c. 2 and 3 are correct
d. All the four are correct

 

The frequency warping is referred to as ??

1) lower frequencies in analog domain expanded in the digital domain
2) lower frequencies in the digital domain expanded in the analog domain
3) non-linear mapping
4) compression of higher frequencies

a. 1, 3, and 4 are correct
b. 2 and 4 are correct
c. 2 and 3 are correct
d. All the four are correct

 

The transformation technique in which there is a one-to-one mapping from s-domain to z-domain is ??

a. Approximation of derivatives
b. Impulse invariance method
c. Bilinear transformation method
d. The backward difference for the derivative

 

The impulse invariant method is obtained by ??

a. Sampling the impulse response of an equivalent analog filter
b. Taking backward difference for the derivative
c. Mapping from s-domain to z-domain
d. Approximation of derivatives

 

Electronic Engineering MCQ

 

The partial fraction of x2+1/x(x-1)2 is ??

a. 1/ (x-1) + 2/(x-1)2 – 1/x
b. 1/ (x-1) + 2/(x-1)2 – 3/x
c. 1/ (x-1) + 2/(x-1)2 – 3/x2
d. 1/ (x+1) + 2/(x+1)2 – 1/x

 

For a partial fraction method to be followed ??

1) The degree of the numerator must be more than the degree of the denominator.
2) The factors formed for partial fraction are a combination of Linear factors and Irreducible quadratic factors.
3) The degree of the numerator must be less than the degree of the denominator.
4) The factors formed for partial fraction are a combination of Linear factors and Square roots.

a. 1, 2, and 3 are correct
b. 1 and 2 are correct
c. 2 and 3 are correct
d. All four are correct

 

The factors formed for partial fraction are a combination of ??

1) Linear factors
2) Irreducible quadratic factors
3) Square roots
4) Cube roots

a. 1, 2, and 3 are correct
b. 1 and 2 are correct
c. 2 and 3 are correct
d. All the four are correct

 

The partial fraction method involves ??

a. Allotting coefficients
b. Dividing the numerator by denominator to get fractions
c. Dividing a single fraction into parts
d. None of the above

 

The condition for a system to be stable is ??

a. All poles of its transfer function lie on the left half of s-plane
b. All poles of its transfer function must be the right half of s-plane
c. All zeros of its transfer function must be the right half of s-plane
d. All zeros of its transfer function must be left half of s-plane

 

MCQ On Digital Signal Processing

 

The condition for a system to be causal is ??

a. All poles of its transfer function must be left half of s-plane
b. All poles of its transfer function must be the right half of s-plane
c. All zeros of its transfer function must be the right half of s-plane
d. All zeros of its transfer function must be left half of s-plane

 

Damping is the ability of a system ??

a. To support the oscillatory nature of the system’s transient response
b. To oppose the continuous nature of the system’s transient response
c. To oppose the oscillatory nature of the system’s transient response
d. To support the discrete nature of the system’s transient response

 

ROC does not have ??

a. zeros
b. poles
c. negative values

 

Overlap-Add Method Deals with principles that ??

a. The linear convolution of a discrete-time signal of length L and a discrete-time signal of length M produces a discrete-time convolved result of length L + M – 1
b. The linear convolution of a discrete-time signal of length L and a discrete-time signal of length M produces a discrete-time convolved result of length L + M
c. The linear convolution of a discrete-time signal of length L and a discrete-time signal of length M produces a discrete-time convolved result of length 2L + M – 1
d. The linear convolution of a discrete-time signal of length L and a discrete-time signal of length M produces a discrete-time convolved result of length 2L + 2M – 1
d. positive values

 

The overlap save method is used to calculate ??

a. The discrete convolution between a sampled signal and a finite impulse response (FIR) filter
b. The discrete convolution between a sampled signal and an infinite impulse response (IIR) filter
c. The discrete convolution between a very long signal and a finite impulse response (FIR) filter
d. The discrete convolution between a very long signal and an infinite impulse response (IIR) filter

 

MCQ On Digital Signal Processing

 

Radix – 2 FFT algorithm performs the computation of DFT in ??

a. N/2Log2 N multiplications and 2Log2 N additions
b. N/2Log2 N multiplications and NLog2 N additions
c. Log2 N multiplications and N/2Log2 N additions
d. NLog2 N multiplications and N/2Log2 N additions

 

For the calculation of N- point DFT, Radix -2 FFT algorithm repeats ??

a. 2(N Log2 N) stages
b. (N Log2 N)2/2 stages
c. (N Log2 N)/2 stages
d. (N Log2(2 N))/2 stages

 

The circular convolution of two sequences in the time domain is equivalent to ??

a. Multiplication of DFTs of two sequences
b. Summation of DFTs of two sequences
c. Difference of DFTs of two sequences
d. Square of multiplication of DFTs of two sequences

 

A circular shift of an N point is equivalent to ??

a. Circular shift of its periodic extension and its vice versa
b. A linear shift of its periodic extension and its vice versa
c. A circular shift of its aperiodic extension and its vice versa
d. A linear shift of its aperiodic extension and its vice versa

 

Padding of zeros increases the frequency resolution ??

a. True
b. False

 

MCQ On Digital Signal Processing

 

The basic properties of DFT include??

1) Linearity
2) Periodicity
3) Circular symmetry
4) Summation

a. 1, 2, and 3 are correct
b. 1, 2, and 4 are correct
c. 1 and 3 are correct
d. All the four are correct

 

Causal systems are the systems in which ??

a. The output of the system depends on the present and the past inputs
b. The output of the system depends only on the present inputs
c. The output of the system depends only on the past inputs
d. The output of the system depends on the present input as well as the previous outputs

 

Time reversal of a discrete-time signal refers to ??

a. y[n] = x[-n+k]
b. y[n] = x[-n]
c. y[n] = x[-n-k]
d. y[n] = x[n-k]

 

Time shifting of discrete-time signal means ??

a. y[n] = x[n-k]
b. y[n] = x[-n-k]
c. y[n] = -x[n-k]
d. y[n] = x[n+k]

 

A signal x[n] is antisymmetric or odd when ??

a. x[-n] = x[n] • x[n]
b. x[n] = -x[n]
c. x[n] = [x[n]]2
d. x[-n] = -x[n]

 

MCQ On Digital Signal Processing

 

The principle of Gram-Schmidt Orthogonalization (GSO) states that any set of M energy signals can be expressed as ??

a. Summation of N orthonormal basis functions, where N ≤ M.
b. Linear combinations of N orthonormal basis functions, where N ≤ M
c. Product of logarithmic combinations of N orthonormal basis functions, where N ≤ M.
d. Product of inverse squares of N orthonormal basis functions, where N ≤ M.

 

The norm or length of a signal is given by ??

a. The square of the energy of the signal
b. The square root of the energy of the signal
c. The inverse of the energy of the signal
d. The cube root of the energy of the signal

 

The operations that may be performed on vectors in Euclidean Space are ??

1) Inner product, the distance between vectors
2) Norm of a vector, orthogonal vectors
3) Orthonormal functions
4) Vector division

a. 1, 2, and 3 are correct
b. 1 and 2 are correct
c. 1, 2, and 4 are correct
d. All the four are correct

 

The cost of the digital processors is cheaper because ??

a. Processor allows time-sharing among a number of signals
b. The hardware is cheaper
c. Require less maintenance
d. Less power consumption

 

DSP MCQ Questions: Digital Signal Processing Q&A

DSP MCQ Questions Part 2. For Part 1 see Digital Signal Processing Part 1

 

DSP MCQ Questions

 

FFT may be used to calculate ??

1) DFT
2) IDFT
3) Direct Z transform
4) Indirect Z transform

a. 1, 2, and 3 are correct
b. 1 and 2 are correct
c. 1 and 3 are correct
d. All the four are correct

 

The Cooley–Tukey algorithm of FFT is a ??

a. Divide and conquer algorithm
b. Divide and rule algorithm
c. Split and rule algorithm
d. Split and combine algorithm

 

Frequency selectivity characteristics of DFT refer to ??

a. Ability to resolve different frequency components from input signal
b. Ability to translate into frequency domain
c. Ability to convert into discrete signal
d. None of the above

 

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

a. 1, 2, and 3 are correct
b. 1 and 2 are correct
c. 1 and 3 are correct
d. All the four are correct

 

The transforming relations performed by DTFT are ??

1) Linearity
2) Modulation
3) Shifting
4) Convolution

a. 1, 2, and 3 are correct
b. 1 and 2 are correct
c. 1 and 3 are correct
d. All the four are correct

 

Electronic Engineering Questions

 

DTFT is the representation of ??

a. Periodic Discrete-time signals
b. Aperiodic Discrete-time signals
c. Aperiodic continuous signals
d. Periodic continuous signals

 

The discrete impulse function is defined by ??

a. δ(n) = 1, n ≥ 0
= 0, n ≠ 1
b. δ(n) = 1, n = 0
= 0, n ≠ 1
c. δ(n) = 1, n ≤ 0
= 0, n ≠ 1
d. δ(n) = 1, n ≤ 0
= 0, n ≥ 1

 

A discrete-time signal maybe ??

1) Samples of a continuous signal
2) A time series which is a domain of integers
3) Time series of sequence of quantities
4) Amplitude modulated wave

a. 1, 2, and 3 are correct
b. 1 and 2 are correct
c. 1 and 3 are correct
d. All the four are correct

 

The roll-off factor is ??

a. The bandwidth occupied beyond the Nyquist Bandwidth of the filter
b. The performance of the filter or device
c. Aliasing effect
d. None of the above

 

The Nyquist theorem for sampling ??

1) Relates the conditions in a time domain and frequency domain
2) Helps in quantization
3) Limits the bandwidth requirement
4) Gives the spectrum of the signal

a. 1, 2, and 3 are correct
b. 1 and 2 are correct
c. 1 and 3 are correct
d. All the four are correct

 

DSP MCQ Questions

 

As compared to analog systems, the digital processing of signals allow ??

1) Programmable operations
2) Flexibility in the system design
3) Cheaper systems
4) More reliability

a. 1, 2, and 3 are correct
b. 1 and 2 are correct
c. 1, 2, and 4 are correct
d. All the four are correct

 

Telegraph signals are examples of ??

a. Digital signals
b. Analog signals
c. Impulse signals
d. Pulse train

 

The speech signal is obtained after ??

a. Analog to digital conversion
b. Digital to analog conversion
c. Modulation
d. Quantization

 

The interface between an analog signal and a digital processor is ??

a. D/A converter
b. A/D converter
c. Modulator
d. Demodulator

 

In DAGs, which register/s provide/s increment or step size for index register especially during the register move ??

a. Index Register
b. Length & Base Register
c. Modify Register
d. All of the above

 

DSP MCQ Questions

 

 Which address/es is/are generated by Program Sequences ??

a. Data Address
b. Instruction Address
c. Both a and b
d. None of the above

 

To change the sampling rate for better efficiency in two or multiple stages, The decimation and interpolation factors must be _________ unity ??

a. Less than
b. Equal to
c. Greater than
d. None of the above

 

In direct form realization for an interpolator, which among the following generates an intermediate signal ??

a. Upsampler
b. Downsampler
c. Anti-imaging filter
d. Anti-aliasing filter

 

Which is/are the correct way/s for the result quantization of an arithmetic operation ??

a. Result Truncation
b. Result Rounding
c. Both a and b
d. None of the above

 

Which among the following has/have a provision to support an adaptive filtering mechanism ??

a. IIR
b. FIR
c. Both a and b
d. None of the above

 

DSP MCQ Questions

 

A filter is said to be a linear phase filter if the phase delay and group delay are _______ ??

a. High
b. Moderate
c. Low
d. Constant

 

Basically, group delay is the delayed response of filter as a function of ________ ??

a. Phase
b. Amplitude
c. Frequency
d. All of the above

 

A direct partial-fraction expansion of the transfer function in Z leads to ??

a. The parallel form II structure
b. The parallel form I structure
c. Cascaded structure
d. None of the above

 

A partial-fraction expansion of the transfer function in Z-1 leads to ??

a. The parallel form II structure
b. The parallel form I structure
c. Cascaded structure
d. None of the above

 

A parallel form of realization is done in ??

a. High-speed filtering applications
b. Low-speed filtering applications
c. Both a and b
d. None of the above

Digital Signal Processing MCQ: Electronics Engineering MCQ

Digital Signal Processing MCQ. Electronics Engineering MCQ related to Digital Signal Processing.

 

Digital Signal Processing MCQ

 

In DSP processors, which among the following maintains the track of addresses of input data as well as the coefficients stored in data and program memories ??

a. Data Address Generators (DAGs)
b. Program sequences
c. Barrel Shifter
d. MAC

 

Which units are generally involved in Multiply and Accumulate (MAC) ??

a. Adder
b. Multiplier
c. Accumulator
d. All of the above

 

Anti-imaging filter with cut-off frequency ωc = π/ I is specifically used _______ upsampling process for the removal of unwanted images ??

a. Before
b. At the time of
c. After
d. All of the above

 

Decimation is a process in which the sampling rate is __________ ??

a. enhanced
b. stable
c. reduced
d. unpredictable

 

How is the sensitivity of filter coefficient quantization for FIR filters ??

a. Low
b. Moderate
c. High
d. Unpredictable

 

Electronic Engineering MCQ

 

In tapped delay line filter, the tapped line is also known as ________ ??

a. Pick-on node
b. Pick-off node
c. Pick-up node
d. Pick-down node

 

FIR filters ________ ??

A. are non-recursive
B. do not adopt any feedback
C. are recursive
D. use feedback

a. A & B
b. C & D
c. A & D
d. B & C

 

Which among the following represent/s the characteristic/s of an ideal filter ??

a. Constant gain in passband
b. Zero gain in stopband
c. Linear Phase Response
d. All of the above

 

The advantage of using the cascade form of realization is ??

1) It has the 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) Overall transfer function may be determined

a. 1, 2, and 3 are correct
b. 1 and 3 are correct
c. 1 and 4 are correct
d. All the four are correct

 

The cascade realization of IIR systems involves ??

1) The transfer function was broken into a product of transfer functions
2) The transfer function divided into the addition of transfer functions
3) Factoring the numerator and denominator polynomials
4) Derivatives of the transfer functions

a. 1, 2, and 3 are correct
b. 1 and 3 are correct
c. 3 and 4 are correct
d. All the four are correct

 

Digital Signal Processing MCQ

 

The direct form II for realization involves ??

1) The realization of transfer function into two parts
2) Realisation after a fraction
3) Product of two transfer functions
4) Addition of two transfer functions

a. 1, 2, and 3 are correct
b. 1 and 3 are correct
c. 3 and 4 are correct
d. All the four are correct

 

In direct form for realization 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

a. 1, 2, and 3 are correct
b. 1 and 2 are correct
c. 3 and 4 are correct
d. All the four are correct

 

The filter that may not be realized by approximation of derivatives techniques are ??

1) Bandpass filters
2) High pass filters
3) low pass filters
4) Band reject filters

a. 1, 2, and 3 are correct
b. 2 and 4 are correct
c. 2 and 3 are correct
d. All the four are correct

 

IIR filter design by approximation of derivatives has the limitations ??

1) Used only for transforming analog high pass filters
2) Used for bandpass filters having smaller resonant frequencies
3) Used only for transforming analog low pass filters
4) Used for bandpass filters having high resonant frequencies

a. 1, 2, and 3 are correct
b. 1 and 2 are correct
c. 2 and 3 are correct
d. All the four are correct

 

For a system function H(s) to be stable ??

a. The zeros lie in the left half of the s plane
b. The zeros lie in the right half of the s plane
c. The poles lie in the left half of the s plane
d. The poles lie in the right half of the s plane

 

Digital Signal Processing MCQ

 

The IIR filter designing involves ??

a. Designing of analog filter in the analog domain and transforming into digital domain
b. Designing of digital filter in the analog domain and transforming into digital domain
c. Designing of analog filter in the digital domain and transforming into analog domain
d. Designing of digital filter in the digital domain and transforming into the analog domain

 

The region of convergence of x/ (1+2x+x2) is ??

a. 0
b. 1
c. Negative
d. Positive

 

For an expanded power series method, the coefficients represent ??

a. Inverse sequence values
b. Original sequence values
c. Negative values only
d. Positive values only

 

The anti causal sequences have ______ components in the left-hand sequences ??

a. Positive
b. Negative
c. Both a and b
d. None of the above

 

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

a. 1, 2, and 3 are correct
b. 1 and 2 are correct
c. 2 and 3 are correct
d. All the four are correct

 

Digital Signal Processing MCQ

 

The ROC of a system is the ??

a. range of z for which the z transform converges
b. range of frequency for which the z transform exists
c. range of frequency for which the signal gets transmitted
d. range in which the signal is free of noise

 

The similarity between the Fourier transform and the z transform is that ??

a. Both convert frequency spectrum domain to discrete-time domain
b. Both convert discrete-time domain to frequency spectrum domain
c. Both convert the analog signal to digital signal
d. Both convert digital signal to analog signal

 

The s plane and z plane are related as ??

a. z = esT
b. z = e2sT
c. z = 2esT
d. z = esT/2

 

The transformations are required for ??

1) Analysis in time or frequency domain
2) Quantization
3) Easier operations
4) Modulation

a. 1, 2, and 3 are correct
b. 1 and 2 are correct
c. 1 and 3 are correct
d. All the four are correct

 

The computational procedure for Decimation in frequency algorithm takes ??

a. Log2 N stages
b. 2Log2 N stages
c. Log2 N2 stages
d. Log2 N/2 stages

 

Digital Signal Processing MCQ

 

DIT algorithm divides the sequence into ??

a. Positive and negative values
b. Even and odd samples
c. Upper higher and lower spectrum
d. Small and large sample

 

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