Notch Filter/Band Reject Filter Question & Answers May 2, 2022 By WatElectronics This article lists 50 Notch Filter/Band Reject Filter MCQs for engineering students. All the Notch Filter/Band Reject Filter Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on their fundamentals on Notch Filter/Band Reject Filter. Bandstop/Band Reject filter or band elimination filter operates opposite to Bandpass filter. The purpose of this type of filter is to reduce the distortion in the signal. This filter blocks specific frequencies ranging between FH and FL cut-off frequencies. But bypass the frequencies which are above the FH and FL frequencies. Band Elimination/Band rejection Filter using an RLC circuit is designed to connect these components in parallel or series configuration. The output is drawn across the Inductor(L) and Capacitor(C) components connected in series. This circuit can be operated in short and open circuits based on the applied frequencies. For instance, the BRF circuit is short-circuited when capacitors are short-circuited and inductors are open and for open-circuited BRF it's vice versa. A Notch filter is a twin T network due to the existence of dual T-shaped-based networks. Applications of the band-stop filter include Image and signal processing. 1). Alternative names for Band stop filter______________? Band pass filter Low pass filter High pass filter Band Reject filter None Hint 2).The filter which operates between the frequencies below the fL and above the fH are called _____filter. Stop band filter High pass filter Band pass filter Low pass filter None Hint 3). In Band stop filter, a high pass filter and a low pass filter are connected in____________. Series Parallel Hybrid None of the above None Hint Read more about a High Pass Filter. 4). Which of the following is the maximum rejection frequency of a Notch Filter ____________. fc=1/2πRC fc=2πRC fc=2π/RC fc=1/4πRC None Hint 5). The capacitor and resistor are used in the notch filter circuit. Capacitor value must ___________. =2µF >=1/2µF >=1µF >=4µF None Hint 6). Applications of the band-stop filter include____. Image and signal processing Aviations Water department Travels None Hint 7). Band stop filter consists of? One stopband and two passbands Two stopbands and one passband One stopband and one passband None of the above None Hint 8). In band stop filter with high frequencies, capacitor become__________ and inductor will be an_________. Short and open circuit Open and short circuit Both are open circuited Both are shorted None Hint 9). fL represents_____? Cut Off Frequency Of High Pass Filter, HPF Cut Off Frequency Of Low Pass Filter, LPF Cut Off Frequency Of Band Stop Filter Cut Off Frequency Of Band Pass Filter None Hint 10). fH represents_____? Cut Off Frequency Of Band Stop Filter Cut Off Frequency Of Band Pass Filter Cut Off Frequency Of High Pass Filter Cut Off Frequency Of Low Pass Filter, Lpf None Hint 11). Notch filter is very much useful in eliminating single frequency at_______. 50-60Hz. 55-60Hz. 70Hz. 30Hz None Hint 12) The quality factor Q of the circuit can be calculated as_______? Q = fc/B.W Q = fc * B.W Q = 1/fc B.W Q = fc B.W None Hint 13). Quality factor ‘Q’ is very____ when compared to the bandpass filter. Less High Medium None of the above None Hint Notch Filter/Band Reject Filter Quiz Questions and Answers. 14). The basic notch filter is designed by using two RC sections in the form of ____. Y L C T None Hint 15). Notch frequency, fn value __________. fn = 1/2πRC fn = 1/4πRC fn = 1/3πRC fn = 4πRC None Hint 16). Band reject filter reduce the ________ of the signal. Distortion Isolation Illumination Visually None Hint 17). The frequencies between fL and fH are_____________? Strengthened Attenuated Fixed Mixed None Hint 18). The band stop filter is a two-pole filter having two cut-off frequencies, commonly known as _________or half power points. -3dB 3dB 0dB -2dB None Hint 19). Identify the formula of Bandwidth, BW ? ƒH – ƒL ƒH + ƒL ƒH/ ƒL ƒL /ƒH None Hint 20). Notch filter ___________ the selectivity of the filter. Decreases Increases Null Fluctuates None Hint 21). Variable notch filters are also used by musicians in sound equipment such as____? Graphic equalizers Wavefronts Lightning Waveguides None Hint 22). Twin-T notch filter network also called as ___? Parallel-Tee Serial-Tee Centered Semi-Centered None Hint 23). Calculate the value of R for the given capacitance of 0.1uF, ƒN = 1000Hz. 800Ω 700Ω 600Ω 500Ω None Hint 24). A band stop filter design with a wide stop band is _______ type of filter? Low Pass Filter Band Pass Filter High Pass Filter Band Reject Filter None Hint 25). Notch filters use a twin-T parallel _______network to obtain a deep notch? Inductance-Capacitance (LC) Inductance-Resistance-Capacitance (LRC) Resistance-Capacitance (RC) None of The Above None Hint 26). Component values of stop band filter are determined by transfer function, H(w)=_____. j(ωL-1/ωC)/(R+ (j(ωL-1/ωC))) j(ωC-1/ωL)/(R+ (j(ωC-1/ωL))) j(ωL-1/ωC)/(R- (j(ωL-1/ωC))) j(Ωl+1/ωC)/(R- (j(ωL+1/ωC))) None Hint 27). Angular frequency ω =________. 2Ω/f 2πf 2π/f 1/2fπ None Hint 28). Notch filter/passive band stop filter with active component op-amp in _______configuration. Inverting Non-Inverting Reverse Straight None Hint Read more about Op-amp 29). If the value of the quality factor is high, then the width of the notch filter is:? Narrow Wide Straight Inclined None Hint 30). Stop Band Ripple = _______ dB. 20 log10(δs) – 20 log1(δs) – 30 log10(δs) 10 log10(δs) None Hint 31). δs is determined as ________? Magnitude response of the stop band filter Magnitude response of the pass band filter Magnitude response of the high pass filter Magnitude response of the low pass filter, LPF None Hint Notch Filter/Band Reject Filter MCQs for Exams 32). Given data: fL=23 kHz, fH=25 kHz, L=45 mH = 0.045 H, B.W=______________? 20hz 2khz 200khz 1/2khz None Hint 33). Resonant Frequency fr =_____ where BW=bandwidth? fH-BW/2 fH+BW/2 fH-BW fH+BW None Hint 34). Quality factor is directly proportional to________. Q α 1/fr Q α fr Q α B.W Q α B.W/fr None Hint 35). If the pole-circular frequency is less than the zero-circular frequency, i.e.,ω p < ωz, then the filter is? Low pass notch type High pass notch type Standard notch type Band pass type None Hint 36). If the pole-circular frequency is less than the zero-circular frequency, i.e.,ω p > ωz, then the filter is? Low pass notch type High pass notch type Standard notch type Band pass type None Hint 37). If the pole-circular frequency is less than the zero-circular frequency, i.e.,ω p = ωz, then the filter is? Low pass notch type High pass notch type Standard notch type Band pass type None Hint 38). Applications of Band stop filter? Instrument amplifiers Telephone technology, DSL ECG (Electrocardiogram) measurements All of the above None Hint 39). A simple notch filter is not accurate and reliable because of the ____ signal to noise ratio. High Medium Null Low None Hint 40). Butterworth’s notch filter is used to_______ accuracy and reliability. Increase Decrease Null None of the above None Hint 41). Notch filter or band reject filter contains passive elements resistor, inductor, and capacitor. Therefore, it is known as a__________? Passive notch filter Active notch filter Neutral None of the above None Hint 42). Passive filter comprises only _____? Source dependent elements Source independent elements Both a and b None of the above None Hint Notch Filter/Band Reject Filter Interview Questions and Answers 43).Which component is used for amplification? Resistors Capacitors Inductors Op-Amp None Hint 44).The passive notch filter is a combination of ______? Only passive high pass filter Both Only passive low pass filter Both a and b None of the above None Hint 45). The upper portion of the passive notch filter circuit contains? Only passive high pass filter Only passive low pass filter Both a and b None of the above None Hint 46). The lower portion of the passive notch filter circuit contains? Only passive high pass filter Only passive low pass filter Both a and b None Hint 47). Optical notch filters are used in ______based Raman spectroscopy? Laser UV Diffraction Infra None Hint 48). Active notch filter contains _____Op-amps. 1 2 3 0 None Hint 49). Op-amp stage is a summing amplifier or a Op-Amp adder which acts as a________? Summer Subtractor Divider Multiplier None Hint 50). RC low pass filter contains ___? Two resistors and one capacitor One resistor and two capacitors Two resistors Two capacitors None Hint For More MCQs Band Pass Filter Question & Answers High Pass Filter Question & Answers FIR Filter Question & Answers Low Pass Filter Question & Answers Please fill in the comment box below. Time's up
