Comparator Question & AnswersJuly 19, 2021 By WatElectronics This article lists 100 Comparator MCQs for engineering students. All the Comparator Questions & Answers given below includes solution and link wherever possible to the relevant topic.A comparator has two inputs, two power supply pins, and one output. From a schematic perspective, the comparator looks the same as an op-amp, but the function of the comparator is quite different. They are used as receiving inspection gauges, working gauges, final inspection gauges, etc. There are five types of comparators they are mechanical, mechanical-optical, reed-type, electrical, electronic, and pneumatic comparators. The Brookes level and Edan Rolt millionth are highly sensitive calibration comparators.The pneumatic comparator works by using backpressure, valves, and high-pressure air. These comparators have less friction, less measuring pressure, and very high magnification, and the disadvantages are they are non-portable, less sensitive, and require a compressor. The Johansson Mikrakator is a type of mechanical comparator and this comparator works on spring, linkages, gear pinions. The disadvantages of this comparator are they are large, expensive, requires a light source and the advantages is they are portable, cheaper, has high magnification, high range, high accuracy, and robust construction.1). How many types of comparators are there? One Two Three Five HintThere are five types of comparators they are mechanical, mechanical-optical, reed-type, electrical, electronic, and pneumatic comparators 2). ___________ are the high sensitive calibration comparators Brookes level Edan Rolt millionth Both a and b None of the above HintThe Brookes level, Edan Rolt millionth is the highly sensitive calibration comparators3). What are the advantages of pneumatic comparators? Less friction Less measuring pressure Very high magnification All of the above HintThe pneumatic comparators have less friction, less measuring pressure, and very high magnification4). What are the advantages of fluid displacement comparators? Construction is easy Economic Portable All of the above HintThe fluid displacement comparators are portable, economic, and their construction is easy5). Which one is a type of mechanical comparator? Johansson mikrakator Optical lever Zeiss optimeter None of the above HintThe Johansson mikrakator is a type of mechanical comparator6). What are the disadvantages of pneumatic comparators? Non-portable Less sensitivity Requires compressor All of the above HintThe pneumatic comparators are non-portable, less sensitive, and requires a compressor7). Which comparator works on spring, linkages, gear pinions? Mechanical Pneumatic Optical None of the above HintThe mechanical comparator works on spring, linkages, gear pinions8). What are the advantages of mechanical optical comparators? High magnification High range High accuracy All of the above HintThe advantages of mechanical optical comparators are it has high magnification, high range, and high accuracy9). Which comparator works by using backpressure, valves, and high-pressure air? Johansson mikrakator Optical lever Zeiss optimeter Pneumatic HintThe pneumatic comparator works by using backpressure, valves, and high-pressure air10). How many types of offsets are there? One Two Three Five HintThe offsets are of two types they are random and systematic offsets11). How many types of multi-check comparators are there? One Two Three Five HintThe multi-check comparators are of three types they are electrical, air, and air electric multi check comparators12). The mechanical comparators are categorized into _____________ One Two Three Four HintThe mechanical comparators are categorized into four types they are reed type, sigma, dial gauge, and Johansson mikrokator comparators13). Which one of the following is a mechanical optical comparator? Zeiss ultra optimeter Zeiss optotest comparators Zeiss optimeter All of the above HintThe Zeiss ultra optimeter, Zeiss optotest comparators, Zeiss optimeter are mechanical optical comparators14). The comparators are used as ___________ gauges Receiving inspection Working gauges Final inspection All of the above HintThe comparators are used as receiving inspection, working, and final inspection gauges, etc15). What are the advantages of projection comparators? Accuracy is high Has very high magnification Optical lever is weightless All of the above HintThe accuracy of projection comparators is high, the optical lever is weightless, and it has a very high magnification16). Which one of the following comparators works by using step-up and step-down transformers? Electrical Electronic Mechanical All of the above HintThe electrical comparators works by using step-up and step-down transformers17). How many inputs does the comparator have? One Two Three Four HintThe comparators have two inputs18). What’s the output when the input voltage is greater than the reference voltage? High Low Zero None of the above HintThe output goes high when the input voltage is greater than the reference voltage19). What are the disadvantages of mechanical optical comparators? Large Expensive Requires light source All of the above HintThe mechanical optical comparators are large, expensive, and requires a light source20). Which one of the following comparators works by using digital signal and amplifier? Electrical Electronic Mechanical All of the above HintThe electronic comparators work by using digital signal and amplifier21). What are the disadvantages of projection comparators? Has high magnification Size of the apparatus large and expensive Both a and b None of the above HintThe projection comparators have high magnification and their apparatus size is large and expensive22). Which one of the following comparators works by using a light source, lens, and mirrors? Electrical Electronic Mechanical Optical HintThe optical comparators works by using a light source, lens, and mirrors23). How many outputs does the comparator have? One Two Three Four HintThe comparators have one output24). What’s the output when the input voltage is less than the reference voltage? High Low Zero None of the above HintThe output goes high when the input voltage is less than the reference voltage25). Which one of the following represents a voltage source in series with a non-inverting input? Input offset voltage Input bias current Input common-mode voltage range None of the above HintThe input offset voltage represents as a voltage source in series with a non-inverting inputComparator MCQ’s for Quiz26). What are the advantages of mechanical comparators? Portable Cheaper Robust construction All of the above HintThe mechanical comparators are portable, cheaper, and robust construction27). Which one of the following represents a voltage source in series with a non-inverting input? Input offset voltage Input bias current Input offset current Both b and c HintThe input bias current and input offset current represents as a voltage source in series with a non-inverting input28). Which one of the following represents that the maximum output current that can be sourced or sunk by the output stage? Input offset voltage Input bias current Input offset current Output short circuit HintThe output short circuit represents that the maximum output current that can be sourced or sunk by the output stage29). Which one is an open-drain comparator? TLV2302 TLV2702 Both a and b None of the above HintThe TLV2302 is an open-drain comparator30). Which one of the following has input clamps? OPA171 OPA2325 OPA350 None of the above HintThe OPA171 has input clamps31). The TIPD106 precision designs for comparators have bandwidth range of _______ 2KHz to 60MHz 7KHz to 60MHz 9KHz to 60MHz 2KHz to 32MHz HintThe TIPD106 precision designs for comparators have a bandwidth range of 2KHz to 32MHz32). Which one of the following describes how to configure an amplifier for hysteresis with a comparator? TIPD106 TIPD141 TIPD178 None of the above HintThe TIPD141 describes how to configure an amplifier for hysteresis with a comparator33). Which one of the following details the design procedure for a window functionality? TIPD106 TIPD141 TIPD178 None of the above HintThe TIPD178 details the design procedure for a window functionality 34). Which one is a push-pull comparator? TLV2302 TLV2702 Both a and b None of the above HintThe TLV2702 is a push-pull comparator35). Which one of the following doesn’t have input clamps? OPA171 OPA2325 OPA172 None of the above HintThe OPA2325 don’t have input clamps36). For a two-bit comparator, the output value of A<B is _________ when inputs A1=A0=B1=B0=0 Zero One Infinity None of the above HintFor a two-bit comparator, the output value of A<B is zero when inputs A1=A0=B1=B0=037). The low input offset current of LM397 single general-purpose voltage comparator is _______ ±1nA ±2nA ±25nA ±12nA HintThe low input offset current of LM397 single general-purpose voltage comparator is ±1nA38).The comparators have _________ propagation delay High Low Very high None of the above HintThe comparators have a low propagation delay39). When compared to an op-amp the slew rate of the comparator is _______ High Low Very low None of the above HintWhen compared to an op-amp the slew rate of the comparator is high40). When an input is applied to the inverting terminal, in that case, the comparator is known as ________ Inverting comparator Non-inverting comparator Both a and b None of the above HintWhen an input is applied to the inverting terminal, in that case, the comparator is known as inverting comparator41). How many total conditions are required for a one-bit comparator? One Two Four Eight HintThe total conditions are required for a one-bit comparator is four42). For a two-bit comparator, the output value of A=B is _________ when inputs A1=A0=B1=B0=0 Zero One Infinity None of the above HintFor a two-bit comparator, the output value of A=B is one when inputs A1=A0=B1=B0=043). If the voltage at the negative terminal is higher than the positive terminal then the output of the comparator will be ________ High Low Very high None of the above HintIf the voltage at the negative terminal is higher than the positive terminal then the output of the comparator will be low44). The comparators have ___________ Very fast rise and fall time Only rise time Only fall time None of the above HintThe comparators have very fast rise and fall time45). When an input is applied to the non-inverting terminal, in that case, the comparator is known as ________ Inverting comparator Non-inverting comparator Both a and b None of the above HintWhen an input is applied to the non-inverting terminal, in that case, the comparator is known as a non-inverting comparator46). How many equal conditions are required for a one-bit comparator? One Two Four Eight HintThe two equal conditions are required for a one-bit comparator 47). How many equal conditions are required for a 2-bit comparator? One Two Four Sixteen HintThe sixteen equal conditions are required for a one 2-bit comparator 48). How many equal conditions are required for a 3-bit comparator? One Two Sixty-four Sixteen HintThe 64 equal conditions are required for a one 3-bit comparator 49). The operating temperature range of the LTC1042C window comparator is from __________ -40 deg C to 85 deg C -40 deg C to 200 deg C -40 deg C to 100 deg C None of the above HintThe operating temperature range of the LTC1042C window comparator is from -40 deg C to 85 deg C50). The voltage range of the TPS3701 window comparator is from ___________ 1 to 36V 6 to 36V 1.8 to 36V 19 to 36V HintThe voltage range of the TPS3701 window comparator is from 1.8 to 36VComparator MCQ’s for Students51). How many pins does the LM324 comparator consist of? 2 4 14 16 HintThe LM324 comparator consists of 14 pins52). For a two-bit comparator, the output value of A>B is _________ when inputs A1=A0=B1=B0=0 Zero One Infinity None of the above HintFor a two-bit comparator, the output value of A>B is one when inputs A1=A0=B1=B0=053). How many equal conditions are required for a 1-bit comparator? 6 2 64 32 HintThe two equal conditions are required for a 1-bit comparator54). The operating temperature of the LTC1042M window comparator is from ___________ )-55 deg C to 85 deg C -40 deg C to 200 deg C -55 deg C to 125 deg C None of the above HintThe operating temperature of the LTC1042M window comparator is from -55 deg C to 125 deg C55). The LM324 comparator used as _______ Op-amp Comparator Both a and b None of the above HintThe LM324 comparator used as op-amp as well as comparator56). How many pins does LM393 IC consist of? 2 pins 4 pins 8 pins 14 pins HintThe LM393 IC consists of 8 pins57). The LM397 single generator purpose voltage comparator used in _______ Peak detector A/D converter Square wave generator All of the above HintThe LM397 single generator purpose voltage comparator used in peak detector, a/d converter, square wave generator, etc58). How many equal conditions are required for a 2-bit comparator? 6 2 4 32 HintThe four equal conditions are required for a 2-bit comparator 59). The LM397 single generator purpose voltage comparator operates from _______ 5V to 30V 15V to 30V 50V to 300V 0.5V to 30V HintThe LM397 single generator purpose voltage comparator operates from 5V to 30V60). For a 1-bit comparator, the output value of A=B is _________ when inputs A=B=0 Zero One Infinity None of the above HintFor a 1-bit comparator, the output value of A=B is one when inputs A=B=061). For a 1-bit comparator, the output value of A<B is _________ when inputs A=B=1 Zero One Infinity None of the above HintFor a 1-bit comparator, the output value of A<B is zero when inputs A=B=162). How many un-equal conditions are required for a 1-bit comparator? 6 2 4 32 HintThe two un-equal conditions are required for a 1-bit comparator 63). How many equal conditions are required for a 3-bit comparator? 6 2 64 8 HintThe eight equal conditions are required for a 3-bit comparator64). In which one of the following the comparator can use? Motherboard CPU Mouse None of the above HintIn CPU the comparator can use65). The TTL74LS85 is a __________ comparator Digital Magnitude Phase None of the above HintThe TTL74LS85 is a magnitude comparator66). How many un-equal conditions are required for a 2-bit comparator? 6 12 4 32 HintThe 12 un-equal conditions are required for a 2-bit comparator 67). For a two-bit comparator, the output value of A<B is _________ when inputs A1=A0=B1=B0=1 Zero One Infinity None of the above HintFor a two-bit comparator, the output value of A<B is zero when inputs A1=A0=B1=B0=168). The phase comparators are categorized into ___________ One Two Three Four HintThe phase comparators are categorized into two types they are vector product and coincidence comparators69). In which type of comparator both phase and amplitude comparators are used? Magnitude Vector Hybrid None of the above HintIn hybrid comparator both phase and amplitude comparators are used70). How many un-equal conditions are required for a 3-bit comparator? 6 12 56 32 HintThe 56 un-equal conditions are required for a 3-bit comparator 71). Which comparator compares both the phase and magnitude of the input quantities? Magnitude Vector Hybrid None of the above HintThe hybrid comparator compares both the phase and magnitude of the input quantities72). For a two-bit comparator, the output value of A=B is _________ when inputs A1=A0=B1=B0=1 Zero One Infinity None of the above HintFor a two-bit comparator, the output value of A=B is one when inputs A1=A0=B1=B0=173). How many types of digital comparators are there? One Two Three Four HintThere are two types of digital comparators are there they are identity and magnitude74). The digital comparators are used in _________ ADC ALU Both a and b None of the above HintThe digital comparators are used in both ADC and ALU75). How many output terminals does the magnitude comparator have? One Two Three Four HintThe magnitude comparator has three output terminalsComparator MCQ’s Important Questions76). For a 1-bit comparator, the output value of A>B is _________ when inputs A=0, B=1 Zero One Infinity None of the above HintFor a 1-bit comparator, the output value of A>B is zero when inputs A=0, B=177). In air multi check comparators group if _______ comparators are used Air Hybrid Both a and b None of the above HintIn air multi check comparators group if air comparators are used78). The air multi check comparator checks the ______________ Connectivity Diameter Both a and b None of the above HintThe air multi check comparator checks both connectivity & diameter at a time79). The sigma comparator is one type of ________ comparator Electronic Electrical Mechanical None of the above HintThe sigma comparator is one type of mechanical comparator80). What are the advantages of a sigma comparator? Robust Cheaper Easy to handle All of the above HintThe sigma comparators are robust, cheaper, and easy to handle81). What are the disadvantages of a sigma comparator? Design is complicated Parallax error can occur Both a and b None of the above HintThe main disadvantages of a sigma comparator are complicated to design, and there may be a chance of parallax error82). What are the components used for sigma comparator construction? Plunger, knife-edge Moving block, fixed block Pointer spindle, pointer All of the above HintThe components used for sigma comparator construction are plunger, knife-edge, moving block, fixed block, pointer spindle, pointer, etc83). What are the advantages of reed type mechanical comparator? Highly sensitive Lightweight Portable All of the above HintThe reed type mechanical comparators are highly sensitive, lightweight, and portable84). The reed type mechanical comparators magnification is _______ >100 <100 <500 >500 HintThe reed type mechanical comparators magnification is <10085). In reed type mechanical comparator _________ components are used Pointer, scale Blocks, reed Plunger All of the above HintIn reed type mechanical comparator pointer, scale, blocks, reed, plunger components are used86). How many reeds are used in a reed type comparator? One Two Three Four HintIn reed type comparator four reeds are used in that two placed horizontally and remaining two are place vertically87). Which one of the following is also known as a twisted strip comparator? Reed type Hybrid type Johansson mikrokator None of the above HintThe Johansson mikrokator is also known as a twisted strip comparator88). _______ are the components used in Johansson mikrokator comparator Light pointer, plunger Bell crank lever, twisted strip Cantilever strip All of the above HintThe light pointer, plunger, bell crank lever, twisted strip, cantilever strip are the components used in the Johansson mikrokator comparator89). The digital indicator accuracy is up to __________ 0.001mm 0.9mm 4mm 12mm HintThe digital indicator accuracy is up to 0.001mm90). The digital indicators are categorized into _________ One Two Three Four HintThe digital indicators are categorized into two types they are gear & pinion type, and lever type digital indicators91). ___________ are the main parts of the dial indicator Indicator, plunger Locking screw, magnification mechanism Mini dial, dial with the main scale All of the above HintThe indicator, plunger, locking screw, magnification mechanism, mini dial, dial with the main scale are the main parts of the dial indicator92). Which one of the following comparators works on button spinning on a loop of string principle? Reed type Hybrid type Johansson mikrokator None of the above HintThe Johansson mikrokator comparator works on button spinning on a loop of string principle93). The magnification of the Johansson mikrokator comparator is about _________ 2000 1000 2300 5000 HintThe magnification of the Johansson mikrokator comparator is about 500094). The magnification of the dial indicator is about _________ 250 to 1000 10 to 1000 500 to 1000 None of the above HintThe magnification of the dial indicator is about 250 to 100095). Which one of the following comparator works on the principle of light of refraction and reflection? Reed type Hybrid type Johansson mikrokator Optical HintThe optical comparator works on the principle of light of refraction and reflection96). For a backpressure indication, the water manometer is used in ________ comparator Reed type Hybrid type Johansson mikrokator Solex pneumatic HintFor a backpressure indication, the water manometer is used in a Solex pneumatic comparator97). For a two-bit comparator, the output value of A=B is _________ when inputs A1=1, A0=0, B1=0, B0=0 Zero One Infinity None of the above HintFor a two-bit comparator, the output value of A=B is zero when inputs A1=1, A0=0, B1=0, B0=098). For a 1-bit comparator, the output value of A<B is _________ when inputs A=1, B=0 Zero One Infinity None of the above HintFor a 1-bit comparator, the output value of A<B is zero when inputs A=1, B=099). The response time of the LM397 single general-purpose voltage comparator is ___________ 440ns 550ns 890ns 990ns HintThe response time of the LM397 single general-purpose voltage comparator is 440ns100). The low input offset voltage of LM397 single general-purpose voltage comparator is _______ ±52mv ±2mv ±25mv ±12mv HintThe low input offset voltage of LM397 single general-purpose voltage comparator is ±2mv Read more about Comparator Time is Up! Time's up
