Active Filter MCQ
1. An electrical filter is a
A. Phase-selective circuit
B. Frequency-selective circuit
C. Filter-selective circuit
D. None of the mentioned
2. Filters are classified as
A. Analog or digital
B. Passive or active
C. Audio or radio-frequency
D. All of the mentioned
3. Why inductors are not preferred for audio frequency?
A. Large and heavy
B. High power dissipation
C. High input impedance
D. None of the mentioned
4. The problem of passive filters is overcome by using
A. Analog filter
B. Active filter
C. LC filter
D. A combination of analog and digital filters
5. What happens if inductors are used in low-frequency applications?
A. Enhance inductor usage
B. No losses occur
C. Degrades inductor performance
D. Low power dissipation
6. Find out the incorrect statement about active and passive filters.
A. Gain is not attenuated in an active filter
B. Passive filters are less expensive
C. Active filter does not cause loading of source
D. Passive filters are difficult to tune or adjust
7. What are the most commonly used active filters?
A. All of the mentioned
B. Low pass and High pass filters
C. Bandpass and Band reject filters
D. All-pass filters
8. Choose the op-amp that improves the filter performance.
A. µA741
B. LM318
C. LM101A
D. MC34001
9. Ideal response of filter takes place in
A. Passband and stopband frequency
B. Stopband frequency
C. Passband frequency
D. None of the mentioned
10. Which filter type is called a flat-flat filter?
A. Cauer filter
B. Butterworth filter
C. Chebyshev filter
D. Band-reject filter