Question 11 : Which of the following is the right way of representation of equation that contains only the positive frequencies in a given x(t) signal?
1. X₊(F)=4V(F)X(F)
2. X₊(F)=V(F)X(F)
3. X₊(F)=2V(F)X(F)
4. X₊(F)=8V(F)X(F)
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Question 12 : What is the fixed range of the quantization error e_q(n)?
1. – ∆/6 < e_q(n) ≤ ∆/6
2. – ∆/4 < e_q(n) ≤ ∆/4
3. – ∆/2 <e_q(n) ≤ ∆/2
4. – ∆/16 <e_q(n) ≤ ∆/16
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Question 13 : What is the main function of (D/A) or DAC converter?
1. Converts Digital to Analog Signal
2. Converts Analog to Digital signal
3. All of the mentioned
4. None of the mentioned
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Question 14 : The basic task of the A/D converter is to convert a discrete set of digital code words into a continuous range of input amplitudes.
1. True
2. False
3.
4.
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Question 15 : What is the main function of (A/D) or ADC converter?
1. Converts Digital to Analog Signal
2. Converts Analog to Digital signal
3. All of the mentioned
4. None of the mentioned
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Question 16 : 3. Which low pass signal component occurs at the rate of B samples per second with even numbered samples of x(t)?
1. u_c– lowpass signal component
2. u_s– lowpass signal component
3. u_c & u_s – lowpass signal component
4. None of the mentioned
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Question 17 : The time required to complete the conversion of Analog to Digital is ________ the duration of the hold mode of S/H.
1. Greater than
2. Equals to
3. Less than
4. Greater than or Equals to
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Question 18 : What is the quantity ax(n-1) is called?
1. Second-order predictor of x(n)
2. Zero-order predictor of x(n)
3. First-order predictor of x(n)
4. Third-order predictor of x(n)
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Question 19 : What is the step size or the resolution of an A/D converter?
1. ∆ = (R)/2^(b+1)
2. ∆ = (R )/2^(b-1)
3. ∆ = (R )/3^(b+1)
4. ∆ = (R )/2
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Question 20 : The slope-overload distortion is avoided, if which of the following conditions satisfy?
1. Min| dx(t)/d(t) | ≤ ∆/T
2. Max| dx(t)/d(t) | ≤ ∆/T
3. |dx(t)/d(t) | ≤∆/T
4. None of the mentioned
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