26-08-2017, 01:52 PM
1) The interface between an analog signal and a digital processor is
a. D / A converter
b. A / D Converter
c. Modulator
d. Demodulator
2) The voice signal is obtained after
a. Analog-to-digital conversion
b. Digital to analog conversion
c. Modulation
d. Quantization
3) Telegraph signals are examples of
a. Digital Signs
b. Analog Signals
c. Signs of impulse
d. Pulse train
4) Compared to analog systems, digital signal processing allows
1) Programmable operations
2) Flexibility in system design
3) Cheaper systems
4) Increased reliability
a. 1, 2 and 3 are correct
b. 1 and 2 are correct
c. 1, 2 and 4 are correct
d. All four are correct
5) The Nyquist theorem for sampling
1) Relate the conditions in time domain and frequency domain
2) Aid in quantification
3) Limit the bandwidth requirement
4) Give 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 four are correct
6) The displacement 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
7) A discrete time signal can be
1) Samples of a continuous signal
2) A time series which is an integer domain
3) Temporary sequence series 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 four are correct
8) The discrete pulse function is defined by
a. Δ (n) = 1, n ≥ 0
= 0, n ≠ 1
b. Δ (n) = 1, n = 0
= 0, n ≠ 1
c. (N) = 1, n? 0
= 0, n ≠ 1
d. (N) = 1, n? 0
= 0, n ≥ 1
9) DTFT is the representation of
a. Discrete Time Signals
b. Aperiodic Discrete time signals
c. Sodium continuous signals
d. Periodic continuous signals
10) The transformation relationships performed by DTFT are
1) Linearity
2) Modulation
3) Displacement
4) Convolution
a. 1, 2 and 3 are correct
b. 1 and 2 are correct
c. 1 and 3 are correct
d. All four are correct
11) The DFT is preferred
1) Its ability to determine the frequency component of the signal
2) Noise elimination
3) Filter design
4) Quantization of the signal
a. 1, 2 and 3 are correct
b. 1 and 2 are correct
c. 1 and 3 are correct
d. All four are correct
12) The frequency selectivity characteristics of DFT refer to
a. Ability to solve different frequency components of the input signal
b. Ability to translate to frequency domain
c. Ability to convert to discrete signal
d. None of the above
13) The FFT Cooley-Tukey algorithm is a
a. Algorithm of division and conquest
b. Division and Rule Algorithm
c. Division and Rule Algorithm
d. Divide and combine the algorithm
14) The FFT can be used to calculate
1) DFT
2) IDFT
3) Direct Transformation Z
4) In direct Z-transformation
a. 1, 2 and 3 are correct
b. 1 and 2 are correct
c. 1 and 3 are correct
d. All four are correct
15) DIT algorithm divides the sequence into
a. Positive and negative values
b. Odd and even samples
c. Upper and lower upper spectrum
d. Small and large samples
16) The computational procedure for the algorithm Decimation in frequency
a. Log2 N stages
b. 2Log2 N stages
c. Stages of Log2 N2
d. Log2 N / 2 steps
17) Transformations are necessary for
1) Analysis in the domain of time or frequency
2) Quantification
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 four are correct
18) The plane s and the plane z are related as
a. Z = esT
b. Z = e2sT
c. Z = 2esT
d. Z = esT / 2
a. D / A converter
b. A / D Converter
c. Modulator
d. Demodulator
2) The voice signal is obtained after
a. Analog-to-digital conversion
b. Digital to analog conversion
c. Modulation
d. Quantization
3) Telegraph signals are examples of
a. Digital Signs
b. Analog Signals
c. Signs of impulse
d. Pulse train
4) Compared to analog systems, digital signal processing allows
1) Programmable operations
2) Flexibility in system design
3) Cheaper systems
4) Increased reliability
a. 1, 2 and 3 are correct
b. 1 and 2 are correct
c. 1, 2 and 4 are correct
d. All four are correct
5) The Nyquist theorem for sampling
1) Relate the conditions in time domain and frequency domain
2) Aid in quantification
3) Limit the bandwidth requirement
4) Give 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 four are correct
6) The displacement 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
7) A discrete time signal can be
1) Samples of a continuous signal
2) A time series which is an integer domain
3) Temporary sequence series 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 four are correct
8) The discrete pulse function is defined by
a. Δ (n) = 1, n ≥ 0
= 0, n ≠ 1
b. Δ (n) = 1, n = 0
= 0, n ≠ 1
c. (N) = 1, n? 0
= 0, n ≠ 1
d. (N) = 1, n? 0
= 0, n ≥ 1
9) DTFT is the representation of
a. Discrete Time Signals
b. Aperiodic Discrete time signals
c. Sodium continuous signals
d. Periodic continuous signals
10) The transformation relationships performed by DTFT are
1) Linearity
2) Modulation
3) Displacement
4) Convolution
a. 1, 2 and 3 are correct
b. 1 and 2 are correct
c. 1 and 3 are correct
d. All four are correct
11) The DFT is preferred
1) Its ability to determine the frequency component of the signal
2) Noise elimination
3) Filter design
4) Quantization of the signal
a. 1, 2 and 3 are correct
b. 1 and 2 are correct
c. 1 and 3 are correct
d. All four are correct
12) The frequency selectivity characteristics of DFT refer to
a. Ability to solve different frequency components of the input signal
b. Ability to translate to frequency domain
c. Ability to convert to discrete signal
d. None of the above
13) The FFT Cooley-Tukey algorithm is a
a. Algorithm of division and conquest
b. Division and Rule Algorithm
c. Division and Rule Algorithm
d. Divide and combine the algorithm
14) The FFT can be used to calculate
1) DFT
2) IDFT
3) Direct Transformation Z
4) In direct Z-transformation
a. 1, 2 and 3 are correct
b. 1 and 2 are correct
c. 1 and 3 are correct
d. All four are correct
15) DIT algorithm divides the sequence into
a. Positive and negative values
b. Odd and even samples
c. Upper and lower upper spectrum
d. Small and large samples
16) The computational procedure for the algorithm Decimation in frequency
a. Log2 N stages
b. 2Log2 N stages
c. Stages of Log2 N2
d. Log2 N / 2 steps
17) Transformations are necessary for
1) Analysis in the domain of time or frequency
2) Quantification
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 four are correct
18) The plane s and the plane z are related as
a. Z = esT
b. Z = e2sT
c. Z = 2esT
d. Z = esT / 2