FIR Filter Question & Answers March 21, 2022 By WatElectronics This article lists 50 FIR Filter MCQs for engineering students. All the FIR Filter Questions and 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 their fundamentals on FIR Filter. A digital filter is an electronic device for digital signal processing, designed to isolate noise from the signal. They are used for calculating signal performance depending on discrete-time, sampled-based signals. A finite Impulse filter (FIR) is a filter with impulse response of a finite period that operates on present and past types of input values. FIR filter is designed using adders, multipliers, and logic gates. The output obtained from the FIR filter is a linear form. Boxcar, Hilbert transformer, and differentiator are the different types of FIR filters. FIR filters are classified into 4 types namely symmetric even also called Type 1, symmetric odd Types 2 and asymmetric even also called Type 3, and asymmetric odd also called type 4. MATLAB, GNU Octave, and Scilab software are used for designing filters. The advantages of the FIR filter include linear phase, ease in the implementation, and represent values in fractional arithmetic. The disadvantages of the FIR filter include high storage space, more delay, and difficulty in implementation. The application of the FIR filter includes data communication, crossover filter, and mastering. 1). FIR stands for ____? Finite Impulse Filter Infinite Impulse Filter Finite Impedance Filter Finite Impulse Fire Hint 2). Filters are classified in to ___ number of types? 2 4 5 6 Hint 3). Which of the following is the impulse response of FIR filter? Infinite Finite Zero Negative Hint 4). FIR filters operate on ___ type of input values? Present Past Next Both a and b Hint 5). FIR filter is also called ____? Recursive filter Non-recursive Higher resistance Lower resistance Hint 6). The output obtained from FIR filter is _____ form? Linear Nonlinear Abrupt Both b and c Hint 7). FIR filter implements _____ transfer function? Zero Uni Bi Multi Hint 8). Which of the following are the special type of FIR filter? Boxcar Hilbert Transformer Differentiator All the above Hint Read more about Op-amp Differentiator 9). Which of the following is the impulse response of Nth order discrete time FIR filter before it reaches to zero? N+1 samples N-1 samples N samples 2N samples Hint 10). A filter allows _____ component of signal? AC DC Zero Both a and b Hint 11). A filter does not allows _____ component of signal? AC DC Zero Both a and b Hint 12). FIR filters are classified in to ____ number of types? 2 4 5 6 Hint 13). Identify the type of response of FIR filter below. Graph Symmetric Odd Symmetric Even Asymmetric Odd Asymmetric Even Hint 14). Identify the type of response of FIR filter below. Graph Symmetric Odd Symmetric Even Asymmetric Odd Asymmetric Even Hint 15). Identify the type of response of FIR filter below. Graph Symmetric Odd Symmetric Even Asymmetric Odd Asymmetric Even Hint 16). Identify the type of response of FIR filter below. FIR Response Types Graph Symmetric Odd Symmetric Even Asymmetric Odd Asymmetric Even Hint FIR Filter Questions and Answers 17). Which of the following is the formula of symmetric impulse response of FIR filter? h(n)= h(N-1-n) h(n)= -h(N-1-n) h(n)= h(N-1+n) h(n)= h(N-1/n) Hint 18). Which of the following is the formula of anti-symmetric impulse response of FIR filter? Add description here! h(n)= h(N-1-n) h(n)= -h(N-1-n) h(n)= h(N-1+n) h(n)= h(N-1/n) Hint 19). Which of the following are requirements for designing a FIR filter? Implementation Specification Components used All the above Hint 20). Which of the following are the components used in FIR filter? Adders Multipliers Logic gates All the above Hint 21). Design of filter depends on which of the following factors of FIR filter? Length Coefficient Size Both a and b Hint 22). Which of the following software is used for designing filter? MATLAB GNU octave Scilab All the above Hint 23). Which of the following are the applications of MATLAB? Deep learning Signal processing Image processing All the above Hint 24). Which of the following are the parameters of FIR filter? Bandwidth Ripple Coefficient All the above Hint 25). Which of the following is the input form of digital radio filter? Analog Digital Both a and b Physical Hint 26). Which of the following is the output form of digital radio filter? Analog Digital Both a and b Physical Hint 27). Which of the following are the properties of FIR? Zero feedback Inherent stability Phase is linear All the above Hint 28). Which of the following are the application of FIR filter? Data communication Crossover filter Mastering All the above Hint 29). At which of the following frequency stages of receiver FIR filter functions in digital communication? High Low Intermediate Zero Hint 30). Which of the following are the advantages of FIR filter? Linear phase Easy in implementation Represents values in fractional arithmetic All the above Hint 31). Which of the following are the disadvantages of FIR filter? High storage space More delay Difficult to implement All the above Hint 32). How many methods are used to determine the frequency coefficient of filter? 3 5 6 7 Hint FIR Filter MCQs for Interviews 33). A maxima filter design method is also called ____? Parks-McClellan Optimal Equiripple All the above Hint 34). Which of the following type of algorithm is used for finding optimal equiripple coefficient of FIR filter? Remez exchange Hamming SHA RSA Hint 35). Equiripple FIR filter method uses ____ algorithm? Remez exchange FFT SHA Both a and b Hint 36). How many methods are used for designing spectrum? 2 4 5 6 Hint 37). Which of the following components are used in practically sketching spectrum? Signal generator Oscilloscope Rectifier Both a and b Hint Read more about Digital Oscilloscope. 38). Which of the following band of noise is used as input signal in indirect method of filter spectrum design method? Narrow Wide Small Zero Hint 39). A window design method is used for designing ____ filter? IIR FIR Ideal IIR Ideal FIR Hint 40). Which of the following is the output function given by the equation x(n)=1, for n=0,x(n)=0 and for n!=0? Ramp function Step function Triangle function Impulse function Hint 41). Which of the following is the signal type of discrete time function, u(n)=n; for n>=0; u(n)=0 for n<0? Unit ramp signal Unit step signal Unit sample signal Both a and b 42). Which of the following are the advantages of DSP? Memory Flexible Précised results All the above Hint 43). A system with zero bounded output for bounded based input is ____? Casual Unstable Non-causal Stable Hint 44). Which of the following is the main purpose of FIR filter design? Add ripples Remove noise Minimize the size Amplify signal Hint 45). The delay in window design method results ___ phase? Linear Nonlinear Zero None of the above Hint FIR Filter MCQs for Quiz 46). If the area under the side lobes of filter graph is high then the value of ripple is high in ___ band? Pass band Stop band Zero band Both a and b Hint 47). In Window design method the ideal frequency response has ____ impulse response? Finite Infinite Constant Both a and c Hint 48). Which of the following are the universal logic gates? NAND NOR XOR Both a and b Hint Read more about NAND 49). Which of the following are basic logic gates? AND OR NOT All the above Hint Read more about OR Gate 50). How many inputs a half adder has? 2 3 4 5 Hint For More MCQs Low Pass Filter Questions & Answers Please fill in the comment box below. Time's up