Sensors Question & Answers June 5, 2021 By WatElectronics This article lists 100+ Sensors MCQs for engineering students. All the Sensors Questions & Answers given below include a hint and wherever possible link to the relevant topic. This is helpful for the users who are preparing for their exams, interviews, or professionals who would like to brush up their fundamentals on the Sensors topic. A Sensor is an electronic device that senses physical quantity in the form of pressure, temperature as input and translates it into electrical form using interfaced components like transducers. Classification of the sensor depends on the physical property the sensor measures. They are available in 2 types like Analog sensor & digital sensor. Analog sensors generate continuous type analog output signals, using components such as rectifier, relay, and comparator. Examples of Analog sensors are accelerometers, light sensors, and pressure sensors. Digital sensors convert a measured input value to digital form directly using components such as cable, transmitter, and sensor. Examples of digital sensors are digital clocks, digital accelerometers, and digital temperature sensors. 1). A Sensor is a _______. Subsystem Machine Module All the above None Hint Read more about Sensors. 2). The function of a sensor is to ________. Detect events within specified environment Separate physical parameters Track and transfer data to computer processor Both a and c None Hint 3). Which of the following are examples of sensors? Tactile sensor MARG sensor Biosensor All the above None Hint 4). Sensor effectiveness depends on ______ parameter. Sensitivity Radiation Restively All the above None Hint 5). Are sensors used along with other electronic devices? Yes No Maybe None Hint 6). Application of Tactile sensors is _______. Elevator touch-sensitive buttons Smart mobile phones Cars Both a and b None Hint 7). MARG sensor is abbreviated as _________. Magnetic Angular Rate and Gravity Magnitude Angular Rate and Gravity Magnetic Angular Resistance and Gravity None of the above None Hint 8). MARG sensor is also called as _________. AHRS BHRS AHHS ARRS None Hint 9). Sensor provides output signal depending on ________. Input Physical quantity Both a and b None of the above None Hint 10). Which of the following is considered as input to a sensor? Microcontroller Processor Both a and b Drivers None Hint 11). Sensors convert signals from analog to _______ domain. Digital Electrical Mechanical Both a and b None Hint 12). LDR sensor is abbreviated as ________. Light Dependent Resistor Light determinant Resistor Luminous Duplicated Resistor None of the above None Hint 13). Which ______ sensors resistance value varies with respect to light intensity? LDR Photosensitive Bio All the above None Hint 14). In LDR sensor, if the intensity of light applied is more, its resistance value becomes _______. Less High Zero Infinity None Hint 15). In LDR sensor, if the intensity of light applied is less, its resistance value becomes ________. Less High Zero Infinity None Hint 16). Which of the following is an application of the LDR sensor? Voltage divider Clocks Street lights All the above None Hint 17). LDR sensor is made up of _______ material. Conductors Insulators Semiconductor None of the above None Hint Read more about Semiconductors. 18). Which other parameter of the LDR sensor changes with respect to incident light along with resistance? Sensitivity Conductivity Insulation All the above None Hint 19). What is the resistance value of the LDR sensor in absence of light _______. Several mega ohms 100’s of megaohms 10-100ohms 10,0000 ohms None Hint 20). What is the resistance value of the LDR sensor in presence of light ______. Several mega ohms 100 ohms 10-100ohms 10,0000 ohms None Hint 21). Which of the following is the semiconducting material are used in the LDR sensor? CdSe InS PbS All the above None Hint 22). Do LDR sensors have PN junctions? Yes No Maybe None Hint 23). LDR symbol depends on ________. Resistor Capacitor Inductor All the above None Hint 24). LDR sensor works on ________ principle. Photoconductivity Resistivity Conductivity Both a and c None Hint 25). LDR has maximum power dissipation of ________. 200mW 2000mW 100mW 1000mW None Hint 26). What is the maximum voltage value of the LDR sensor at 0 lux? 200V 100V 250V 300V None Hint 27). What is the peak wavelength of the LDR sensor? 600nm 700nm 800nm 900nm None Hint 28). What is the minimum resistance value LDR sensor at 10lux? 1.8 kohm 2kohm 3kohm 4kohm None Hint 29). What is the maximum resistance value of the LDR sensor at 10lux? 4.5kohm 5kohm 6 kohm 8kohm None Hint 30). What is the typical resistance value of an LDR sensor at 100lux? 0.7kohm 0.8 kohm 0.9 kohm 1kohm None Hint 31). What is the dark resistance value of the LDR sensor after 1 second? 0.03Mohm 1Mohm 2Mohm 3 Mohm None Hint 32). What is the dark resistance value of the LDR sensor after 5second? 0.03Mohm 1Mohm 0.25Mohm 3 Mohm None Hint 33). LDR sensors are classified based on _______ factors. Photosensitive material Linearity Both a and b Insulating material None Hint 34). Does LDR designed with Cadmium Sulfide substance provide a good response to all kinds of luminous radiation? Yes No Maybe None Hint 35). Does LDR designed with Lead Sulfate substance provide a response to particular infrared radiation? Yes No Maybe None Hint 36). LDR sensors are classified into _______ types. 2 3 4 5 None Hint 37). Linear LDR sensors are alternatively named as ________. Photodiodes SCR Zener All the above None Hint 38). Linear LDR incorporates photodiodes as ______ due to their linear performance. Photo-resistors Capacitors Inductors Both a and b None Hint 39). Which of the following are the advantages of the LDR sensor? High sensitivity High light-dark resistance ratio Inexpensive All the above None Hint 40). Which of the following is the disadvantage of LDR sensor? Narrow spectral response Less responsive device Provides low-temperature stability All the above None Hint 41). Which of the following are the characteristics of a good sensor? High sensitive to measured property Insensitive to other application property Zero influence of measured property All the above None Hint 42). The ratio between the resultant output signal to a measured property of a sensor is called ______. Sensitivity Resistivity Conductivity Both b and c None Hint 43). Maximum sensors have _______ transfer function. Linear Nonlinear Zero Infinity None Hint 44). A linear transfer function is also called as _______. System transfer function Component transfer function Constant transfer function Both a and c None Hint 45). Which of the following are the deviations observed in an ideal sensor? Sensitivity Offset error Nonlinearity All the above None Hint 46). _______ sensor provides data about the chemical composition of its environment in terms of gas, and liquid phase. Chemical sensor Liquid sensor Air sensor All the above None Hint 47). Chemical sensor involves _______ number of steps. 2 3 4 5 None Hint 48). In _______ step of chemical sensor molecules interact selectively with receptor type molecules. Transduction Recognition Both a and b None of the above None Hint 49). Which of the following are the typical kind of biometric materials used for the development of sensors? Aptamers Molecularly imprinted polymers Both a and b None of the above None Hint 50). Which of the following are the applications of Biosensor? Biomedicine Bio-technology Both a and b Automobiles None Hint Sensor Important Questions for Interviews 51). Biosensors detect _______ biological components. Cells Protein Nucleic acid All the above None Hint 52). MOSFET sensor is used to measure ________ parameters. Physical Chemical Biological All the above None Hint 53). Which of the following are the applications of MOS sensors? Image sensor Biochemical sensor Monitoring sensor All the above None Hint 54). Which of the following are the components of image sensors? Charge-coupled device CMOS active pixel sensor NMOs Both a and b None Hint 55). CMOS active pixel sensor is used in _______ devices. Digital camera Digital imaging Both a and b Battery None Hint 56). CCD device is abbreviated as ________. Charge coupled device Charge capacitive device Charge change device None of the above None Hint 57). CCD device was developed by _________. George E. Smith Willard Boyle Both a and b Henry None Hint 58). MOS APS sensor is abbreviated as ________. MOS Active Pixel Sensor MOS Actual Pixel Sensor MOS Active Peak Sensor MOS Actual Peak Sensor None Hint 59). MOS APS sensor was developed by _________. George E. Smith Willard Boyle Tsutomu Nakamura Henry None Hint 60). Which of the following are the applications of MOS monitoring sensors? Agriculture Traffic monitoring Weather monitoring All the above None Hint 61). Which of the following are other MOS sensor technology? Intelligent sensors Wireless sensor network Wired sensor network Both a and b None Hint 62). WSN in sensor technology is abbreviated as _________. Wireless sensor network Wired sensor network Wireless sensitive network Both a and b None Hint 63). Sensors generate an output signal in terms of ___________. Electrical signal Optical form Both a and b None of the above None Hint 64). ________ sensor measures temperature. Temperature Air sensor Glass sensor Both a and b None Hint 65). Which of the following are the examples of temperature sensors? Bimetallic devices Thermometers Silicon diode All the above None Hint 66). A temperature sensor is provided with ________ as input. Sound Air Temperature Liquid None Hint 67). The output obtained from the temperature sensor is of ______ form. Current Voltage Both a and b None of the above None Hint 68). Sensors are available in how many types? 2 3 4 5 None Hint 69). Analog sensors generate _______ analog kind of output signals. Discrete Continuous Both a and b Does not generate None Hint 70). Which of the following are the examples of Analog sensors? Accelerometer Light sensors Pressure sensors All the above None Hint Read more about Light Sensor. 71). Which of the following is the function of the accelerometer sensor? Detects changes in position, orientation Detects variation in velocity, shock Detects variation in tilt and vibration All the above None Hint 72). Analog accelerometers are classified based on ________. Sensitivity Configuration Both a and b Power dissipation None Hint 73). Are accelerometers available in digital and analog form? Yes No Maybe None Hint 74). _____ sensors detect a quantity of light striking the sensor component. Light sensor Beam sensor Velocity sensor Speed sensor None Hint 75). Light sensors are of _______ types. 2 3 4 5 None Hint 76). _______ is used as a switch in Analog sensors. LDR PN diode Thyristor All the above None Hint 77). LDR switch automatically turns on or off depending on _______ factor. Day light incident Passing UV rays Both a and b Applying external force None Hint 78). LDR resistance increases with reduce in ________. Power Light Charges All the above None Hint 79). A sensor that detects sound levels is called ________ sensor. Sound sensor Light sensor Velocity sensor Gas sensor None Hint 80). Input to sound sensor is ________. Sound Voltage Current Power None Hint 81). A sound sensor converts sound levels to _______ output. Sound Voltage Current Power None Hint 82). Which of the following are the components used along with the sound sensor? Microcontroller Microphone Amplifier All of the above None Hint Read more about Amplifier. 83). Which of the following are applications of a sound sensor? Switches Security models Home automation systems All the above None Hint 84). Which of the following are applications of a light sensor? Street lights Home automation systems Mobile phones All the above None Hint 85). Which of the following are the advantages of a light sensor? Energy-efficient Automatic switch performance Less power consumption All the above None Hint 86). Which of the following are the disadvantages of a light sensor? High response time Temperature-sensitive Rugged in nature All the above None Hint 87). Which of the following are the advantages of a sound sensor? Speech recognition Easy to manipulate Affordable price All the above None Hint 88). Which of the following are the disadvantages of a sound sensor? Require large memory Requires software to translate Limited coverage range All the above None Hint 89). Which of the following are sound sensors? Dynamic microphone Carbon microphone Ribbon microphone All the above None Hint 90). A dynamic microphone is based on _______ principle. EM induction Electric induction Magnetic induction All the above None Hint 91). A sensor used to measure the quantity of pressure when applied to an object is called _______ sensor. Pressure Light Force Sound None Hint 92). Pressure sensor generates output in ________ form. Digital Analog Both a and b Heat None Hint 93). Input to pressure sensor is ________. Heat Pressure Light None Hint 94). Which of the following are the applications of pressure sensors? Piezoelectric sensor Piezoelectric plates Industrial application All the above None Hint 95). The output generated by the piezoelectric sensor is ________. Mechanical Electric charge Chemical All the above None Hint Read more about Piezoelectric Sensor. 96). Which of the following are the advantages of a pressure sensor? Low power consumption Simple in design Small size All the above None Hint 97). Sensors in which data transmission and translation occurs into digital form is _____ sensor. Analog Digital Sound Liquid None Hint 98). Do digital sensors overcome the disadvantages of analog sensors? Yes No Maybe None Hint 99). Digital sensors converter measure input value to digital form in _______ method. Direct Indirect Both a and None of the above None Hint 100). Which of the following are the components of a digital sensor? Cable Transmitter Sensor All the above None Hint Sensor MCQs for Interviews 101). Which of the following are the components used for communication in a digital sensor? Cable Transmitter Sensor All the above None Hint 102). Which of the following are examples of a digital sensor? Digital temperature sensor Digital accelerometer Digital clock All the above None Hint 103). A sensor that generates variable frequency in square waveform output is ______ sensor. Digital temperature sensor Digital accelerometer Digital clock All the above None Hint 104). A method in which a sensor that generates variable frequency in square waveform output using a digital accelerometer sensor is called _______. Pulse width modulation Time modulation Frequency modulation Both a and b None Hint 105). Output taken from pulse width modulation id proportional to ________. Acceleration value Frequency value Time value All the above None Hint 106). Which of the following is a digital temperature sensor? DS1620 DS 1633 DS 1230 DS 6655 None Hint 107). Which of the following is the function of the digital temperature sensor? Provides temperature value Provides pressure value Provides current value Provides voltage value None Hint 108). Temperature sensor acts as ________. Thermostat Thermistor Thermometer All the above None Hint 109). A temperature sensor is provided with _________ parameters. 2 3 4 5 None Hint 110). TL in temperature sensor is abbreviated as ________. Low-temperature Least temperature Last temperature All the above None Hint 111). TH in temperature sensor is called _________. High-temperature High tension All the above None Hint 112). When the temperature of a measuring device is higher than or equal to reference temperature then the temperature sensor treats the temperature value as ________ temperature. High temperature Low temperature Saturation temperature All the above None Hint 113). When the temperature of a measuring device is lower than or equal to reference temperature then the temperature sensor treats the temperature value as ________ temperature. High temperature Low temperature Saturation temperature All the above None Hint 114). DA1620 digital temperature sensor has _______ number of pins. 7 4 8 12 None Hint 115). DA1620 digital temperature sensor pin 1 is _______. DQ TH TL TCOM None Hint 116). DA1620 digital temperature sensor pin 7 is _______. DQ TH TL TCOM None Hint 117). DA1620 digital temperature sensor pin 6 is ________. DQ TH TL TCOM None Hint 118). Temperature sensor measures temperature in ____ units. Centigrade Fahrenheit Kelvin All the above None Hint 119). Which of the following are the components uses in digital temperature sensor DA1620? Transformer Rectifier Regulator All the above None Hint 120). A sensor that detects IR light is called _______. IR sensor UV sensor Red sensor Luminous sensor None Hint 121). IR in IR sensor stands for _________. Infra Red sensor Interior sensor Internal red sensor All the above None Hint 122). Which of the following is applications of IR sensor? TV remote Burglar alarm Robotics All the above None Hint 123). Which of the following are the advantages of an IR sensor? Consumes less power Immune to noise Immune to corrosion All the above None Hint 124). Which of the following are the disadvantages of the IR sensor? Bounded up to a range Requires line of sight Effects with rain, and dust All the above None Hint 125). IR sensor operates in _______ range. 0.7 micro-meters to 1000 micrometers 0.5 micro-meters to 1000 micrometers 0.7 micro-meters to 100 micrometers 0.7 micro-meters to 10 micrometers None Hint 126). IR sensor can be divided into _______ number of regions. 2 3 4 5 None Hint 127). Near IR region ranges between ________ range. 0.75 to 3 micrometers 3 to 6 micrometers 0.75 to 1-micrometer 3 to 9 micrometer None Hint 128). Mid IR region ranges between ______ range. 0.75 to 3 micrometers 3 to 6 micrometers 0.75 to 1-micrometer 3 to 9 micrometer None Hint 129). Far IR region ranges between ________ range. 0.75 to 3 micrometers 3 to 6 micrometers 0.75 to 1-micrometer Greater than 6 micrometers None Hint 130). An IR sensor that only measures IR radiation but does not emit is called _______. Passive IR sensor Active IR sensor Both a and b Resistive IR sensor None Hint 131). Are IR radiations visible to human eyes? Yes No Maybe None Hint 132). Which of the following are the components of the IR sensor? IR LED IR photodiode Both a and b Transformer None Hint 133). Which of the following are the emitter components of the IR sensor? IR LED IR photodiode Both a and b Transformer None Hint 134). Which of the following are the detector components of the IR sensor? IR LED IR photodiode Both a and b Transformer None Hint 135). IR sensor works on ________ principle. Object detection Object breaking Object radiation All the above None Hint 136). IR sensors are of _________ types. 2 3 4 5 None Hint 137). Which of the following are the components in the analog sensor? Rectifiers Comparator Relay All the above None Hint Read more about Rectifiers. 138). A sensor that estimates targets attributes is called ______. IR sensor Ultrasonic sensor UV sensor All the above None Hint 139). Ultrasonic sensor works similar to _______ type of sensors. Sonar Radar UV Both a and b None Hint 140). Ultrasonic sensors are classified into _______ types. 2 3 4 5 None Hint 141). Which of the following are the applications of ultrasonic sensors? Night vision device IR thermometers IR tracking systems All the above None Hint 142). Which of the following are the components of an IR sensor-controlled robot? 8051 microcontroller Motor driver IR receiver All the above None Hint Read more about 8051 Microcontroller. 143). Which of the following are the components of the IR sensor? IR source IR detector IR resistor Both a and b None Hint 144). Which of the following are the examples of IR sensor source? LED Laser diode Switch Both a and b None Hint 145). Which of the following are the examples of IR sensor detectors? Photodiodes Phototransistor Switch Both a and b None Hint 146). Infrared detectors are also called ________. Active IR sensors Passive IR sensors Both a and b None of the above None Hint 147). Passive IR sensors are of ______ types. 2 3 5 6 None Hint 148). Quantum IR sensor provides high ______ performance. Detection Reflection Emission All the above None Hint 149). Which of the following are the examples of thermos IR sensors? Bolometers Pyroelectric meters Thermocouples All the above None Hint Read more about Bolometer. 150). IR-based Infrared tracking systems use _______ radiation. UV EM Visible light All the above None Hint Sensor Exam Questions & Answers 151). LM35 sensor IC is an example of ________ sensor. Temperature Light IR PIR None Hint 152). Proximity type sensor is a ________ type of sensor. Contact type Noncontact type Both a and b Partially contact None Hint 153). A sensor that detects the presence of an object without any contact is called _______ sensor. Temperature Light IR Proximity None Hint 154). Which of the following are the methods used for implementing proximity sensors? Optical Hall effect Capacitive All the above None Hint Read more about Hall Effect. 155). Which of the following are the applications of proximity sensors? Car Mobile phones Industries All the above None Hint 156). Reverse car parking system uses _______ type of sensor. Temperature Light IR Proximity None Hint 157). Which of the following are the advantages of proximity sensors? High switch rate High-speed Low cost All the above None Hint 158). Which of the following are the disadvantages of proximity sensors? Limited range Not flexible in the vacuum medium Cross-sensitivity All the above None Hint 159). Which of the following are the types of IR sensors? Reflective Transmissive Resistive Both a and b None Hint 160). Which type of sensor is used for detecting smoke? Smoke IR UV Light None Hint 161). A smoke sensor function is to detect ________. Smoke Gas Fire All the above None Hint 162). Which of the following are the applications of a smoke sensor? Kitchens Industries Labs All the above None Hint 163). Smoke sensors detect different gas types such as ________. Methane Butane LPG All the above None Hint 164). Which of the following are the disadvantages of a smoke alarm? Results in false results when high sensitivity Use radio active material Requires more current All the above None Hint 165). Which of the following are the advantages of a smoke alarm? Saves human's life High sensitive Portable All the above None Hint 166). A smoke sensor such as MQ series sensor detects _______ type of gas. CO CO2 CH4 All the above None Hint 167). A sensor that detects the percentage of alcohol is _______. Alcohol Sensor Smoke Sensor UV Sensor IR Sensor None Hint 168). Breath analyzers use _______ type of sensors. Alcohol Smoke UV IR None Hint 169). Alcohol sensor detects alcohol percentage in ________ range. 0.05 mg/L to 10mg/L 5 mg/L to 10mg/L 0.05 mg/L to 100mg/L 50 mg/L to 10mg/L None Hint 170). Which of the following are the advantages of an alcohol sensor? High sensitivity Low-cost Portable All the above None Hint 171). Which of the following are the applications of tilt sensors? Thermostats Video cameras Robotic technology All the above None Hint 172). Which of the following are the application of touch sensor? Mobile Laptops Tablets All the above None Hint 173). Touch sensors are classified into _______ types. 2 3 4 5 None Hint Read more about Touch Sensor. 174). Modern touch sensors applications are built with ______ type of touch sensor. Capacitive Resistive Inductive Both a and b None Hint 175). Which of the following are the advantages of capacitive touch sensors? High accuracy rate Good SNR Zero noise Both a and b None Hint 176). Which of the following are the advantages of a touch sensor? Low cost Portable Ease of use All the above None Hint 177). Which of the following are the disadvantages of a touch sensor? Tactile Covers up to small range Not water resistance All the above None Hint 178). A sensor that is used for building color images is called _______. Touch sensor Color sensor Light sensor Both a and b None Hint Read more about Color Sensor. 179). Which of the following are the applications of a color sensor? Image processing Industrial object tracking Color identification All the above None Hint 180). Is TCS3200 a color sensor? Yes No Maybe None Hint 181). Which of the following is the function of the TCS3200 color sensor? Detects color Generates square wave Creates black color image Both a and b None Hint 182). A color sensor detects _______ colors. Red Black White All RGB colors None Hint 183). Colors sensors contain _______ component to reject unwanted UV and IR light. Filters Amplifier Snippers All the above None Hint 184). Which of the following are the components of a color sensor? Light source Receiver Surface All the above None Hint 185). A sensor used for monitoring weather humidity condition is called ______. Humidity sensor Moisture sensor Temperature sensor All the above None Hint 186). Which of the following are the advantages of a color sensor? Sorts objects based on color approach Built automated systems Low cost All the above None Hint 189). Which of the following are the disadvantages of a color sensor? Provides pass or fail status only Cost-effective approach for small scale industries Limited range of operation All the above None Hint 190). Humidity sensors are classified into how many types? 3 4 5 6 None Hint 191). Which of the following are humidity sensors? DHT11 DHT22 DHT55 Both a and b None Hint 192). Humidity sensor provides environmental information of _______. Moisture Humidity ratio Absolute humidity All the above None Hint 193). Which of the following are the advantages of a capacitive humidity sensor? Flexible to use Zero maintenance cost Pressure independent All the above None Hint 194). Which of the following are the disadvantages of capacitive humidity sensors? Limited stability Sensitive to aggressive substance Sensitive to dewing substances All the above None Hint 195). Which of the following are the advantages of a psychrometric humidity sensor? Accurate Good quality Zero aging effect All the above None Hint 196). Which of the following are the disadvantages of a psychrometric humidity sensor? Not suitable below 0 degrees Limits in measurement Power consumption Both a and b None Hint 197). Which of the following are the advantages of a Hygrometric humidity sensor? Easy to clean Simple in construction Less cost All the above None Hint 198). Which of the following are the disadvantages of a Hygrometric humidity sensor? Less accuracy Limits in measuring range Measurement process are time-consuming All the above None Hint 199). A sensor that detects inclination or tilt is called _______. Position sensor Tilt sensor Angled sensor Both a and c None Hint 200). The tilt sensor is made up of ________ substance. Mercury Vapor Helium Argon None Hint Sensor MCQs With Answers 201). Which of the following are the components of the tilt sensor? Rolling ball Conductive plate Mercury All the above None Hint 202). Which of the following are the types of tilt sensors? Force balance MEMS sensor Fluid-filled sensor Capacitive tilt sensor All the above None Hint 203). Tilt sensor measures ________ parameters. Tilt Slope Inclination Elevation All the above None Hint 204). Sensor that work based on gravity and anticipated for DC acceleration is ________. Force balance MEMS sensor Fluid-filled sensor Capacitive tilt sensor None Hint 205). Application of force balance tilt sensor is _________. Vehicles Ships Seismic events All the above None Hint 206). Force balance tilt sensors are used along with _______. Tilt meters Inclinometers Barometers Both a and b None Hint 207). A force balance tilt sensors measure up to _______ frequency. 100 Hz 1000HZ 10Hz 20Hz None Hint 208). Which of the following are the advantages of force balance tilt sensor? Accurate Change in board measurement Insensitive to temperature gradient All the above None Hint 209). Which of the following are the disadvantages of force balance tilt sensor? High cost Inaccurate Portable All the above None Hint 210). Which of the following are the components of the MEMS tilt sensor? Dynamic mass plates Mechanical suspension systems Chip All the above None Hint 211). MEMS tilt sensor combines ________ components. Mechanical Electrical Chemical Both a and b None Hint 212). MEMS tilt sensors are ________ sized sensors. Small Large Medium Complex None Hint 213). Which of the following are the applications of MEMS tilt sensor? Smartphones Medical test Satellites All the above None Hint 214). Fluid-filled tilt sensors are classified as ________. Electrolytic Capacitive Magnetic Both a and b None Hint 215). Electrolytic fluid-filled tilt sensors measures _________. Water Air Angle All the above None Hint 216). Electrolytic fluid-filled tilt sensors measure the angle in terms of _______. Arc Minutes Seconds All the above None Hint 217). Which of the following are the advantages of electrolytic fluid-filled tilt sensors? Provides accurate data Small size Balanced signal output All the above None Hint 218). Electrolytic fluid-filled tilt sensors are filled with _______. Fluid Gas Liquid Both and b None Hint 219). _______ type of tilt sensors measures non-contact tilt and inclination. Capacitive tilt sensor Resistive tilt sensor Force filled sensor All the above None Hint 220). Capacitive type of tilt sensors can be operated using ________. Switches Sensor Both a and b Wire None Hint 221). Which of the following are the components of a capacitive type of tilt sensors? Suspension beams Central proof mass Comb drive capacitor All the above None Hint 222). Which of the following factors are considered while selecting tilt sensors? Vibrations Number of axes Resolution All the above None Hint 223). Sensors can be connected in _______ number of ways. 2 3 4 5 None Hint 224). Sensors fetch _________ input data to control devices. Real time Physical data Particle data Both a and b None Hint 225). Which of the following are the real-time physical input data to control devices by a sensor? Humidity Temperature Pressure All the above None Hint 226). Do sensors translate physical property data into electrical form? Yes No Maybe None Hint 227). On which of the following factor does the design of a sensor depends? Application property Quantity measurement Quality of environment None of the above None Hint 228). Which of the following are the general advantages of a sensor? Low maintenance Quick data communication Preventive maintenance All the above None Hint 229). Which of the following are the general disadvantages of sensor? Network latency Routing overhead Bounded range All the above None Hint 230). _________ type of sensor is used to detect noise. Noise Sound Sensitive None of the above None Hint 231). Which of the following are the examples of noise sensors? RADAR SONAR Microphone All the above None Hint 232). Which of the following are the application of noise sensors? Home appliances Security appliances Surveillance circuits All the above None Hint 233). Noise sensor sense variation in ___ parameter to measure noise level. Air pressure Sound Humidity None of the above None Hint 234). Which of the following sensor is used for detecting a nearby distant object? Sound sensor Proxy sensor Radar All the above None Hint 235). Proxy sensor radiates ________ to detect an object within its surroundings. Sound EM waves Light All the above None Hint 236). Proxy sensors are classified depending on _________. Targets parameter Target size Type of property None of the above None Hint 237). _________ type of proxy sensor detects plastic objects. Capacitive Photo-electric Resistive Both a and b None Hint 238). ___________ type of proxy sensor detects metal objects. Capacitive Photo-electric Inductive Both a and b None Hint 239). Which of the following are proxy sensors? Doppler Inductive Radar All the above None Hint 240). Which of the following are the applications of a proxy sensor? Mobile phones Parking Ground level All the above None Hint 241). ________ sensor identifies the presence of object and color. Vision sensor Color sensor Radar All the above None Hint 242). Which of the following are the applications of vision sensors? Surveillance Tracking systems Monitoring systems All the above None Hint 243). Which of the following are the applications of image sensors? Mobile Medical equipment Optical mouse All the above None Hint 244). A sensor that measures radiation level is called _________. Radiation sensor Detection sensor Video sensor Image sensor None Hint 245). Radiation sensor detects radiation level from ________ objects. Radioactive Electrical Mechanical All the above None Hint 246). Which of the following are the applications of radiation sensor? Image generation systems Plant labs Airports All the above None Hint 247). _________ sensor detects the position of an object. Radar Position UV All the above None Hint 248). Position sensor is of ________ types. 2 3 4 5 None Hint 249). ___________ is a position sensor. Proximity sensor Motion sensor Heat sensor Both a and b None Hint 250). Which of the following are the applications of proximity sensors? Cameras Industries equipment’s Control equipment’s All the above None Hint 251). Proximity cards sensor operates up to _______ range. 20cm 40 cm 50 cm 80cm None Hint 252). A sensor that measures the quantity of water in the soil is called ________. Soil sensor Humidity sensor Moisture sensor All the above None Hint 253). Which of the following are the examples of moisture sensor? Capacitance sensor Watermark sensor Gravimetric sensor All the above None Hint 254). Which of the following are the advantages of moisture sensor? Measures density in large amount at a time Records moisture level Independent on temperature All the above None Hint 255). Which of the following are the applications of moisture sensor? Agriculture land Garden Landscapes All the above None Hint 256). Photoelectric sensor is also called ________. Photo camera sensor Photo circuit sensor Photo eye sensor All the above None Hint 257). A sensor that detects color, motion and location of an object is called _______. Vision sensor Image sensor Photosensor All the above None Hint 258). Which of the following is photoelectric sensor? Diffuse sensor Retro-reflective sensor Through-beam sensor All the above None Hint 259). Which of the following are the applications of phot electric sensor? Trucks Robots Door applications All the above None Hint 260). PIR sensor stands for _________. Passive infrared sensor Passive internal sensor Passive interest sensor None of the above None Hint 261). PIR sensor measures _______ type of light emitted from obstacles. UV Visible IR None of the above None Hint 262). PIR sensors are a ________ detector. Motion Video Sound Audio None Hint 263). Which of the following are the applications of the PIR sensor? Security type alarms Automated lighting systems Washing machines Both a and b None Hint 264). ________ sensors track object details using ultrasonic waves. Ultrasonic sensor UV sensor Motion sensor All the above None Hint 265). An ultrasonic sensor is also called as ________. Ultrasonic transducer Ultrasonic converter Ultrasonic device All the above None Hint 266). Which of the following are the components of an ultrasonic transducer? Transmitter Receiver Transceivers All the above None Hint 267). Which component of the ultrasonic sensor converts electrical type signal to ultrasound? Transmitter Receiver Transceivers All the above None Hint 268). Which component of the ultrasonic sensor converts ultrasound to electrical type signal? Transmitter Receiver Transceivers All the above None Hint 269). Which component of the ultrasonic sensor sends and receipts ultrasound? Transmitter Receiver Transceivers All the above None Hint 270). Which of the following are the applications of an ultrasonic sensor? Anemometer Burglar alarms Connectionless charging devices All the above None Hint 271). Which of the following sensor detects disturbances in radio waves? Radio sensor Tomographic sensor Motion sensor All the above None Hint 272). The tomographic sensor is a type of ________ sensor. Radio sensor UV sensor Motion sensor All the above None Hint 273). A sensor that detects magnetic power is called ________. Magnetic sensor Electric sensor Motions sensor All the above None Hint 274). Which of the following are the examples of magnetic sensors? GMR AMR GMI All the above None Hint 275). Which of the following are the applications of a magnetic sensor? Theft systems Navigation systems Position tracking systems All the above None Hint 276). Magnetic sensors work on _______ principle. Lorentz force bases MEMS Faradays law Magnetic momentum All the above None Hint 277). A sensor that tracks the pressure of a solid or a liquid is called ________. Pressure sensor Friction sensor Force sensor All the above None Hint 278). A pressure sensor is also called as ________. Manometers Pressure indicators Pressure transducers All the above None Hint 279). Which of the following are the types of pressure sensors? Absolute pressure sensor Gauge pressure sensor Vacuum pressure sensor All the above None Hint 280). A sensor that measures pressure with respect to perfect vacuum type is called _______. Absolute pressure sensor Gauge pressure sensor Vacuum pressure sensor Sealed pressure sensor None Hint 281). A sensor that measures pressure with respect to atmospheric type pressure is called _______. Absolute pressure sensor Gauge pressure sensor Vacuum pressure sensor Sealed pressure sensor None Hint 282). A sensor that measures pressure below atmospheric type pressure is called _______. Absolute pressure sensor Gauge pressure sensor Vacuum pressure sensor Sealed pressure sensor None Hint 283). A sensor that measures the difference in 2 pressure level is called _______. Absolute pressure sensor Gauge pressure sensor Differential pressure sensor Sealed pressure sensor None Hint 284). A sensor that measures constant pressure level is called _______. Absolute pressure sensor Gauge pressure sensor Differential pressure sensor Sealed pressure sensor None Hint 285). Which of the following are the applications of an absolute type pressure sensor? Liquid type pressure systems Aviation type inspection systems Industrial packaging All the above None Hint 286). Which of the following is an example of a gauge pressure sensor? Tire gauge sensor Vacuum pumps Resistance pressure sensor Both a and b None Hint 287). Which of the following are measured using a differential pressure type sensor? Oil filters Air filters Flow rates All the above None Hint 288). Sealed type pressure sensor is similar to ________. Absolute pressure sensor Gauge pressure sensor Vacuum pressure sensor Differential pressure sensor None Hint 289). Which of the following are analog pressure sensors? Force collector Potentiometric Force balancing Both a and b None Hint 290). The function of a particle sensor is to detect ________. Dust Smoke Air Both a and b None Hint 291). Is a particle sensor sensitive to cigarette smoke? Yes No Maybe None Hint 292). A particle sensor is also called ________. Particle detector Radiation detector Particle transducer Both a and b None Hint 293). Which of the following are the examples of particle detectors? Bubble chambers Photographic plate Diffusion chamber All the above None Hint 294). Which of the following are the particle detectors used for protection from radiation? Dosimeter Geiger counter Semiconductor detector All the above None Hint 295). Which of the following are the examples of particle detectors used in nuclear and particle physics? Spark chamber Ionization chamber Geiger Muller tube All the above None Hint 296). Which of the following are the examples of solid-state particle detectors? Transition radiation detectors Cherenkov detector Scintillation counter All the above None Hint 297). A sensor that detects the motion of an object alone is called ______. Motion sensor Radiation sensor UV sensor Light sensor None Hint 298). Which of the following are the application of motion sensors? Surveillance cameras Home appliances Auto lighting systems All the above None Hint 299). A sensor that identifies and monitors the level of a liquid or solid or gas is called ______. Motion sensor Radiation sensor UV sensor Level sensor None Hint 300). Which of the following are the examples of level sensor? Ultrasonic Capacitance Microwave All the above None Hint Time's up
