Digital Signal Processing A2d D2a Converters Online Exam Quiz
Digital Signal Processing A2d D2a Converters GK Quiz. Question and Answers related to Digital Signal Processing A2d D2a Converters. MCQ (Multiple Choice Questions with answers about Digital Signal Processing A2d D2a Converters
What is the nyquist rate of the signal x(t)=3cos(50*pi*t)+10sin(300*pi*t)-cos(100*pi*t)?
Options
A : 50Hz
B : 100Hz
C : 200Hz
D : 300Hz
Which bit coder is required to code a signal with 16 levels?
Options
A : 8 bit
B : 4 bit
C : 2 bit
D : 1 bit
What is the discrete-time signal obtained after sampling the analog signal x(t)=cos(2000*pi*t)+sin(5000*pi*t) at a sampling rate of 5000 samples/sec?
Options
A : cos(2.5*pi*n)+sin(pi*n)
B : cos(0.4*pi*n)+sin(pi*n)
C : cos(2000*pi*n)+sin(5000*pi*n)
D : none of the mentioned
What is output signal when a signal x(t)=cos(2*pi*40*t) is sampled with a sampling frequency of 20Hz?
Options
A : cos(pi*n)
B : cos(2*pi*n)
C : cos(4*pi*n)
D : cos(8*pi*n)
If the sampling rate Fs satisfies the sampling theorem, then the relation between quantization errors of analog signal(eq(t)) and discrete-time signal(eq(n)) is?
Options
A : eq(t)=eq(n)
B : eq(t)<eq(n)
C : eq(t)>eq(n)
D : not related
If ‘F’ is the frequency of the analog signal, then what is the minimum sampling rate required to avoid aliasing?
Options
A : F
B : 2F
C : 3F
D : 4F
The relation between analog frequency ‘F’ and digital frequency ‘f’ is?
Options
A : F=f*T(where T is sampling period)
B : f=F*T
C : No relation
D : None of the mentioned
The difference between the unquantized x(n) and quantized xq(n) is known as ___________
Options
A : Quantization coefficient
B : Quantization ratio
C : Quantization factor
D : Quantization error
The quality of output signal from A/D converter is measured in terms of ___________
Options
A : Quantization error
B : Quantization to signal noise ratio
C : Signal to quantization noise ratio
D : Conversion constant
Which of the following should be done in order to convert a continuous-time signal to a discrete-time signal?
Options
A : Sampling
B : Differentiating
C : Integrating
D : None of the mentioned
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