1) 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
Answer
Explanation

ANSWER: 3 and 4 are correct
Explanation: No explanation is available for this question!


2) 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
Answer
Explanation

ANSWER: 2 and 3 are correct
Explanation: No explanation is available for this question!


3) The magnitude response of Butterworth filter has
1) Flat stop band 2) Flat pass band 3) Tapering 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
Answer
Explanation

ANSWER: 1 and 2 are correct
Explanation: No explanation is available for this question!


4) The frequency warping is referred as
1) lower frequencies in analog domain expanded in digital domain 2) lower frequencies in digital domain expanded in 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
Answer
Explanation

ANSWER: 1, 3 and 4 are correct
Explanation: No explanation is available for this question!


5) The transformation technique in which there is one to one mapping from sdomain to zdomain is
a. Approximation of derivatives
b. Impulse invariance method
c. Bilinear transformation method
d. Backward difference for the derivative
Answer
Explanation

ANSWER: Bilinear transformation method
Explanation: No explanation is available for this question!


6) 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 sdomain to zdomain
d. Approximation of derivatives
Answer
Explanation

ANSWER: Sampling the impulse response of an equivalent analog filter
Explanation: No explanation is available for this question!


7) The filter that may not be realized by approximation of derivatives techniques are
1) Band pass 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
Answer
Explanation

ANSWER: 2 and 4 are correct
Explanation: No explanation is available for this question!


8) IIR filter design by approximation of derivatives has the limitations
1) Used only for transforming analog high pass filters 2) Used for band pass filters having smaller resonant frequencies 3) Used only for transforming analog low pass filters 4) Used for band pass 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
Answer
Explanation

ANSWER: 2 and 3 are correct
Explanation: No explanation is available for this question!


9) For a system function H(s) to be stable
a. The zeros lie in left half of the s plane
b. The zeros lie in right half of the s plane
c. The poles lie in left half of the s plane
d. The poles lie in right half of the s plane
Answer
Explanation

ANSWER: The poles lie in left half of the s plane
Explanation: No explanation is available for this question!


10) The IIR filter designing involves
a. Designing of analog filter in analog domain and transforming into digital domain
b. Designing of digital filter in analog domain and transforming into digital domain
c. Designing of analog filter in digital domain and transforming into analog domain
d. Designing of digital filter in digital domain and transforming into analog domain
Answer
Explanation

ANSWER: Designing of digital filter in analog domain and transforming into digital domain
Explanation: No explanation is available for this question!

