Question 1
Marks : +2 | -2
Pass Ratio : 100%
Which of the following condition is true?
Explanation: If ‘d’ is the discrimination factor and ‘K’ is the selectivity factor, then
Question 2
Marks : +2 | -2
Pass Ratio : 100%
What is the system function of the Butterworth filter with specifications as pass band gain KP=-1 dB at ΩP=4 rad/sec and stop band attenuation greater than or equal to 20dB at ΩS=8 rad/sec?
Explanation: From the given question,
Question 4
Marks : +2 | -2
Pass Ratio : 100%
What is the expression for cutoff frequency in terms of stop band gain?
Explanation: We know that,
Question 5
Marks : +2 | -2
Pass Ratio : 100%
If H(s)=\\(\\frac{1}{s^2+s+1}\\) represent the transfer function of a low pass filter (not Butterworth) with a pass band of 1 rad/sec, then what is the system function of a stop band filter with a stop band of 2 rad/sec and a center frequency of 10 rad/sec?
Explanation: The low pass-to- band stop transformation is
Question 7
Marks : +2 | -2
Pass Ratio : 100%
If H(s)=\\(\\frac{1}{s^2+s+1}\\) represent the transfer function of a low pass filter (not Butterworth) with a pass band of 1 rad/sec, then what is the system function of a band pass filter with a pass band of 10 rad/sec and a center frequency of 100 rad/sec?
Explanation: The low pass-to-band pass transformation is
Question 9
Marks : +2 | -2
Pass Ratio : 100%
What is the value of gain at the pass band frequency, i.e., what is the value of KP?
Explanation: We know that the formula for gain is K = 20 log|H(jΩ)|
Question 10
Marks : +2 | -2
Pass Ratio : 100%
Which of the following equation is True?
Explanation: We know that,