1. A filter separates high and low _______.
(A) Voltages
(B) Amplitudes
(C) Frequencies
(D) All of these
2. A _______ pass filter provides output for the lower frequencies.
(A) High
(B) Low
(C) Band stop
(D) Band pass
3. A _______ pass filter provides output for the higher frequencies.
(A) High
(B) Low
(C) Band stop
(D) Band pass
4. _______ direct current varies in amplitude but does not reverse its direction.
(A) Positive
(B) Pulsating
(C) Negative
(D) Harmonics
5. An _______ coupling circuit is effectively a high pass filter.
(A) LC
(B) RC
(C) RLC
(D) RL
6. An RC coupling is effectively a _______ pass filter.
(A) Any of these
(B) Low
(C) Band
(D) High
7. A transformer with an isolated secondary winding also effectively works as a _______.
(A) Band Pass
(B) Low Pass
(C) High Pass
(D) Band Stop
8. A _______ capacitor in parallel with R provides a low pass filter.
(A) Coupling
(B) Bypass
(C) Mica
(D) Paper
9. In _______ pass filters capacitance is in series with the load.
(A) Low
(B) High
(C) Band
(D) All of these
10. In high pass filters capacitance is in _______ with the load.
(A) Shunt
(B) Parallel
(C) Vertical
(D) Series
11. Resonant circuits are generally used for band _______ and band stop filtering.
(A) Prevent
(B) Pass
(C) Block
(D) Any of these
12. Which of the following is a low pass filter?
(A) L type with series C & shunt L
(B) π type with series C & shunt L
(C) L type with series L & shunt C
(D) T type with series C & shunt L
13. Combination of L, C and R can be arranged as L, T and ______ filters.
(A) π
(B) L–T
(C) L–R
(D) L–L
14. RC coupling _______ DC component.
(A) Pass
(B) Neither a nor b
(C) Both a and b
(D) Block
15. A low pass filter is that circuit which stops _______ frequencies.
(A) Low
(B) Pulsating
(C) High
(D) Smooth
16. By _______ R and C low pass can be converted to high pass filter.
(A) Interchanging
(B) Making in series
(C) Removing
(D) Increasing value
17. A band stop filter does the _______ of band pass filter.
(A) Opposite
(B) Equal
(C) Hand in hand
(D) All of these
18. RC coupling network consists of two _______ and one _______.
(A) Capacitor, Resistor
(B) Resistor, Capacitor
(C) Inductor, Resistor
(D) None
19. There is no need for coupling _______ in transformer coupling.
(A) Resistor
(B) Capacitor
(C) Bypass
(D) Inductor
20. To amplify high signals direct _______ cannot be used.
(A) Coupling
(B) Voltage
(C) Signal
(D) Current
21. A high pass filter _______.
(A) Pass all high frequencies
(B) All of above
(C) Stop certain lower cut-off frequencies
(D) Stop low frequencies
22. The main function of an RC network is to _______.
(A) Give flat frequency response curve
(B) Pass AC and block DC
(C) Eliminate inductive effects
(D) None of above