# Filters MCQ’s

This set of Avionics Multiple Choice Questions & Answers (MCQs) focuses on “Filters”.

1. What are filters created by using resistors and capacitors or inductors and capacitors called?
a) Active filters
b) Passive filters
c) Continuous filters
d) Differential filters

2. What type of filter produces a predictable phase shift characteristic in all frequencies?
a) Band pass filters
b) High pass filters
c) Low pass filters
d) All pass filters

3. What is a filter?
a) Frequency selective circuit
b) Amplitude selective circuit
c) Frequency damping circuit
d) Amplitude damping circuit

4. An RC coupling circuit is an example of what type of filter?
a) Low pass filter
b) High pass filter
c) Band pass filter
d) All pass filter

5. Find the cut off frequency for an RC low pass filter of R=8.2Ω and C=0.0033μF?
a) 6KHz
b) 5.88KHz
c) 4.26KHz
d) 7.91KHz

6. What is the value of resistor for a high pass RC filter to produce a cutoff frequency of3.4KHz if C = 0.047μF?
a) 654Ω
b) 1000Ω
c) 996Ω
d) 752Ω

7. What is the type of filter shown in the figure?

a) Low pass filter
b) High pass filter
c) Band pass filter
d) All pass filter

8. What is the type of filter shown in the figure?

a) Low pass filter
b) High pass filter
c) Band pass filter
d) All pass filter

9. Notch filters and band reject filters are the same.
a) True
b) False

10. What is the loss the filter introduces to the signals in the passband called?
a) passband loss
b) Insertion loss
c) Attenuation

11. What is the value of notch frequency if the values of resistance and capacitance are 100 kV and 0.02 μF?
a) 79.6Hz
b) 21.5Hz
c) 82.4Hz
d) 40Hz

12. The attenuation rate is also called?
a) Roll off
b) Roll in
c) Envelope delay
d) Ripple

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