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Sensors and Transducers MCQ Test | 100 Multiple Choice Questions
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3/18/24, 4:16 AM 6.SENSORS AND TRANSDUCERS 100 MCQ 6.SENSORS AND TRANSDUCERS 100 MCQ * Indicates required question 1. NAME OF STUDENT * 2. ROLL NO * 6.SENSORS AND TRANSDUCERS 3. 1.What is the function of a sensor? 1 point Mark only one oval. a. To convert physical quantities into electrical signals b. To convert electrical signals into physical quantities c. To measure the speed of a moving object d. To control the temperature of a system 4. 2. Which of the following is a type of temperature sensor? 1 point Mark only one oval. a. Thermocouple b. Accelerometer c. Pressure sensor d. Proximity sensor https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 1/28 3/18/24, 4:16 AM 5. 6.SENSORS AND TRANSDUCERS 100 MCQ 3. Which of the following is a type of pressure sensor? 1 point Mark only one oval. a. Strain gauge b. pH sensor c. Temperature sensor d. Flow sensor 6. 4. What is the function of a transducer? 1 point Mark only one oval. a. To convert electrical signals into physical quantities b. To measure the speed of a moving object c. To control the temperature of a system d. To convert physical quantities into electrical signals 7. 5. Which of the following is a type of flow sensor? 1 point Mark only one oval. a. Thermocouple b. Strain gauge c. pH sensor d. Turbine flow meter 8. 6. Which of the following is a type of level sensor? 1 point Mark only one oval. a. pH sensor b. Ultrasonic sensor c. RTD d. Accelerometer https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 2/28 3/18/24, 4:16 AM 9. 6.SENSORS AND TRANSDUCERS 100 MCQ 7. What is the function of a pH sensor? 1 point Mark only one oval. a. To measure the temperature of a system b. To measure the flow rate of a fluid c. To measure the acidity or alkalinity of a solution d. To measure the pressure of a system 10. 8. Which of the following is a type of proximity sensor? 1 point Mark only one oval. a. Photoelectric sensor b. Strain gauge c. Turbine flow meter d. Accelerometer 11. 9. Which of the following sensors is used for measuring temperature? 1 point Mark only one oval. A. Strain gauge B. Thermocouple C. Photodetector D. Accelerometer 12. 10. Which of the following is a non-contact type sensor? 1 point Mark only one oval. A. Strain gauge B. LVDT C. Potentiometer D. Ultrasonic sensor https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 3/28 3/18/24, 4:16 AM 13. 6.SENSORS AND TRANSDUCERS 100 MCQ 11. Which of the following is an example of an active transducer? 1 point Mark only one oval. A. Strain gauge B. LVDT C. Thermistor D. Photodetector 14. 12. What type of transducer is used to convert temperature changes into 1 point electrical signals? Mark only one oval. a. Thermocouple b. Potentiometer c. Strain gauge d. Load cell 15. 13. Which of the following is an example of a passive sensor? 1 point Mark only one oval. a. Ultrasonic sensor b. Capacitive sensor c. Thermistor d. Piezoelectric sensor https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 4/28 3/18/24, 4:16 AM 16. 6.SENSORS AND TRANSDUCERS 100 MCQ 14. What type of sensor is used to detect the presence or absence of an 1 point object by measuring changes in capacitance? Mark only one oval. a. Photoelectric sensor b. Inductive sensor c. Capacitive sensor d. Ultrasonic sensor 17. 15. What type of transducer is used to convert linear motion into electrical signals? 1 point Mark only one oval. a. LVDT b. Load cell c. Thermocouple d. Potentiometer 18. 16. What is the primary function of a thermocouple? 1 point Mark only one oval. a. Detecting displacement b. Measuring pressure c. Measuring temperature d. Detecting light 19. 17. What is the main difference between a sensor and a transducer? 1 point Mark only one oval. Option 1 https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 5/28 3/18/24, 4:16 AM 20. 6.SENSORS AND TRANSDUCERS 100 MCQ 18. Which of the following sensors is used to measure the amount of light 1 point in a particular area? Mark only one oval. a. Thermocouple b. LDR (Light Dependent Resistor) c. Hall effect sensor d. Strain gauge 21. 19. What is the principle of operation of a capacitive transducer? 1 point Mark only one oval. A. Change in resistance B. Change in capacitance C. Change in inductance D. Change in voltage 22. 20. Which transducer is known as ‘self-generating transducer’? 1 point Mark only one oval. a) Active transducer b) Passive transducer c) Secondary transducer d) Analog transducer 23. 21. What is the principle of operation of LVDT? 1 point Mark only one oval. a) Mutual inductance b) Self-inductance c) Permanence d) Reluctance https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 6/28 3/18/24, 4:16 AM 24. 6.SENSORS AND TRANSDUCERS 100 MCQ 22. Active transducer do not require any type of additional power source for an operation. 1 point Mark only one oval. a) True b) False 25. 23. What is the range of frequency of the waves produced by the Ultrasonic transducer? 1 point Mark only one oval. a) 20 Kilohertz to several Gigahertz b) 1 Kilohertz to several Gigahertz c) 40 Kilohertz to several Megahertz d) less than 20 Kilohertz 26. 24. What is the full form of LVDT with respect to displacement transducer? 1 point Mark only one oval. a) Linear variable differential temperature b) Linear variable differential transformer c) Liquid visible differential transformer d) Liquified visible differential transformer 27. 25. What is the effect on properties of LDR when light falls on it? 1 point Mark only one oval. a) Its resistance remains same b) Its resistance changes c) Its capacitance changes d) Its inductance changes https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 7/28 3/18/24, 4:16 AM 28. 6.SENSORS AND TRANSDUCERS 100 MCQ 26. What is the range of frequency of the waves produced by the 1 point Ultrasonic transducer? Mark only one oval. a) 20 Kilohertz to several Gigahertz b) 1 Kilohertz to several Gigahertz c) 40 Kilohertz to several Megahertz d) less than 20 Kilohertz 29. 27. What is a load cell used for? 1 point Mark only one oval. a. To measure temperature b. To measure pressure c. To measure humidity d. To measure force 30. 28. What is a pressure transducer? 1 point Mark only one oval. a. A sensor used to measure the weight of an object b. A sensor used to measure the temperature of an object c. A sensor used to measure the flow rate of a liquid d. A sensor used to measure the pressure of a gas or liquid https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 8/28 3/18/24, 4:16 AM 31. 6.SENSORS AND TRANSDUCERS 100 MCQ 29. What is a possible cause of a flow sensor showing no flow despite fluid 1 point flowing? Mark only one oval. A. The sensor is dirty or clogged B. The sensor is not properly calibrated C. The sensor is damaged or faulty D. The fluid is flowing too quickly 32. 30. What could cause a pressure sensor to read lower than expected? 1 point Mark only one oval. A. The pressure source is too high B. The sensor is not properly calibrated C. The sensor is damaged or faulty D. The pressure source is too low 33. 31. Which of the following factors can affect the accuracy of a sensor’s calibration? 1 point Mark only one oval. A. Environmental factors, such as temperature and humidity B. Mechanical factors, such as shock and vibration C. Electrical factors, such as electromagnetic interference D. All of the above https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 9/28 3/18/24, 4:16 AM 34. 6.SENSORS AND TRANSDUCERS 100 MCQ 32. The process of adjusting a sensor’s output to match a known standard 1 point is called: Mark only one oval. A. Testing B. Calibration C. Sensitivity analysis D. Linearity testing 35. 33. Which of the following is a typical method used for testing the linearity of a sensor or transducer? 1 point Mark only one oval. A. Zero and span testing B. Dynamic testing C. Relative testing D. Sensitivity testing 36. 34. Which of the following methods is used to test a pressure transducer? 1 point Mark only one oval. A. Using a pressure gauge B. Using a thermometer C. Using a flowmeter D. Using a voltmeter https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 10/28 3/18/24, 4:16 AM 37. 6.SENSORS AND TRANSDUCERS 100 MCQ 35. What is the purpose of testing a sensor or transducer? 1 point Mark only one oval. A. To ensure that it is properly calibrated B. To verify that it is working correctly C. To adjust its signal output D. To improve its durability 38. 36. Sensor is a type of transducer. 1 point Mark only one oval. A. True B. False 39. 37. Based upon what parameters sensors will be chosen_ _ _ _ _ 1 point Mark only one oval. A. Environmental factors B. Economic factor C. Static characteristics D. All the above 40. 38. _ _ _ _ _ _can be defined as the variation in the constant of 1 point proportionality between the input physical quantity and the output electrical signal Mark only one oval. A. Resolution B. Accuracy C. Precision D. Linearity https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 11/28 3/18/24, 4:16 AM 41. 6.SENSORS AND TRANSDUCERS 100 MCQ 39. Average value of the readings is _ _ _ _ _ 1 point Mark only one oval. A. Mean B. Median C. Mode D. deviation 42. 40. Change in output of sensor with change in input is 1 point Mark only one oval. A. Threashold B. Slew rate C. Sensitivity D. None of the mentioned 43. 41. Smallest change which a sensor can detect is ____________ 1 point Mark only one oval. A. Resolution B. Accuracy C. Precision D. Scale 44. 42. What is the term used to express the ability of a measuring system to maintain its standard performance? 1 point Mark only one oval. A. Zero stability B. Stability C. Sensitivity D. Linearity https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 12/28 3/18/24, 4:16 AM 45. 6.SENSORS AND TRANSDUCERS 100 MCQ 43. A system will be error free if we remove all systematic error’. 1 point Mark only one oval. A. True B. False 46. 44. Which of the following error is caused by poor calibration of the instrument? 1 point Mark only one oval. A. Random error B. Gross error C. Systematic error D. Precision error 47. 45. _ _ _ _ _ _ is a popular technique for transmitting digital data in embedded systems. 1 point Mark only one oval. A. Analog voltage B. PWM C. Serial digital D. All the above 48. 46. The linear variable differential transformer transducer is 1 point Mark only one oval. A. Inductive transducer B. Non-inductive transducer C. Capacitive transducer D. Resistive transducer https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 13/28 3/18/24, 4:16 AM 49. 6.SENSORS AND TRANSDUCERS 100 MCQ 47. If at one end, the two wires made of different metals are joined together then a voltage will get produced between the two wires due to difference of temp between the two ends of wires. This effect is observed in 1 point Mark only one oval. A. Thermocouples B. Thermistors C. RTD D. Ultrasonics 50. 48. With the increase in the intensity of light, the resistance of a photovoltaic cell 1 point Mark only one oval. A. Increases B. Decreases C. Remains same D. None of these 51. 49. The transducers that converts the input signal into the output signal, which is adiscrete function of time is known as ___________ transducer. 1 point Mark only one oval. a) Active b) Analog c) Digital d) Pulse Other: https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 14/28 3/18/24, 4:16 AM 52. 6.SENSORS AND TRANSDUCERS 100 MCQ 50. A transducer that converts measurand into the form of pulse is called 1 point Mark only one oval. a) Active transducer b) Analog transducer c) Digital transducer d) Pulse transducer Other: 53. 51. Which of the following is a digital transducer? 1 point Mark only one oval. a) Strain gauge b) Encoder c) Thermistor d) LVDT Other: 54. 52. Strain gauge, LVDT and thermocouple are examples of 1 point Mark only one oval. a) Active transducers b) Passive transducers c) Analog transducers d) Primary transducers Other: https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 15/28 3/18/24, 4:16 AM 55. 6.SENSORS AND TRANSDUCERS 100 MCQ 53. Certain type of materials generates an electrostatic charge or voltage when mechanical force is applied across them. Such 1 point materials are called Mark only one oval. a) Piezo-electric b) Photo-electric c) Thermo-electric d) Photo-resistive Other: 56. 54. Inverse transducer converts electrical into a physical quantity. 1 point Mark only one oval. True False 57. 55.The output of a transducer must ___________ 1 point Mark only one oval. be different at different environment conditions be same at all environment conditions be same at some environment conditions be zero always 58. 56. The size of a transducer must be __________ 1 point Mark only one oval. infinite zero large small https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 16/28 3/18/24, 4:16 AM 59. 6.SENSORS AND TRANSDUCERS 100 MCQ 57. Potentiometer transducers are used for the measurement of 1 point Mark only one oval. A. Pressure B. Displacement C. Humidity D. Both (a) and (b) 60. 58. Capacitive devices are used for the level measurement of * 1 point Mark only one oval. A. Only liquid B. Solid in powdered form C. Both (a) and (b) D. None of these 61. 59. The IC LM35 is used as which type of sensor? * 1 point Mark only one oval. a) Pressure sensor b) Temperature sensor c) Light sensor d) Mechanical sensor 62. 60. Thermocouples, Resistance Temperature Detectors (RTD). Thermistors. Thermometers are the Examples of...... * 1 point Mark only one oval. Thermal Sensors Electrical Sensors optical Sensors None Of the above. https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 17/28 3/18/24, 4:16 AM 63. 6.SENSORS AND TRANSDUCERS 100 MCQ 61.The quantity to be measured by an instrumentation system is.......... * 1 point Mark only one oval. Measurment Measurand Signal Sensor. 64. 62.Diaphragam is a ..........Transducer while LVDT is a.......... transducers. * 1 point Mark only one oval. Secondary,Primary Primary,Secondary. Active ,Passive Passive,Active. 65. 63.The Temperature range of RTD is.......... * 1 point Mark only one oval. 0 to 350 degreecel. -200 to 650 degreecel. 200 to 1000 degreecel. none of the above. 66. 64.Thermister uses ........material. * 1 point Mark only one oval. Metal Semiconductor Insulating Conducting. https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 18/28 3/18/24, 4:16 AM 67. 6.SENSORS AND TRANSDUCERS 100 MCQ 65.The two secondary windings of LVDT are connected in .............................. * 1 point Mark only one oval. Series addition, Parallel addition parallel opposition Series opposition. 68. 66.The central position of the core in LVDT is called as ........Position. * 1 point Mark only one oval. central zero null ground Other: 69. 67.RTD stands for * 1 point Mark only one oval. Resistance temperature Diode Resistance temperature Detector Reactance temperature Diode Reactance temperature Detector https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 19/28 3/18/24, 4:16 AM 70. 6.SENSORS AND TRANSDUCERS 100 MCQ 68. Commonly used thermoelectric transducer is __________ * 1 point Mark only one oval. a) thermometer b) thermocouple c) linear variable differential transducer d) loud speaker 71. 69. The algebraic sum of e.m.f.s in a circuit containing thermocouples is * 1 point _________ Mark only one oval. a) infinite b) hundred c) zero d) ten 72. 70. Which of the following is an example of a passive transducer? * 1 point Mark only one oval. a. Strain gauge b. Thermocouple c. LVDT d. Photoelectric sensor 73. 71. What is a proximity sensor? * 1 point Mark only one oval. a. A sensor used to measure the weight of an object b. A sensor used to measure the temperature of an object c. A sensor used to measure the flow rate of a liquid d. A sensor used to detect the presence of nearby objects https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 20/28 3/18/24, 4:16 AM 74. 6.SENSORS AND TRANSDUCERS 100 MCQ 72. What are some common types of temperature sensors used in * 1 point industrial applications? Mark only one oval. a. Thermocouples b. RTDs (Resistance Temperature Detectors) c. Thermistors d. All of the above 75. 73. What might be a cause of a proximity sensor failing to detect objects? * 1 point Mark only one oval. A. The sensor is too sensitive B. The sensor is too far away from objects C. The sensor is not powered properly D. The sensor is damaged or faulty 76. 74. Which of the following factors can affect the accuracy of a sensor’s calibration? * 1 point Mark only one oval. A. Environmental factors, such as temperature and humidity B. Mechanical factors, such as shock and vibration C. Electrical factors, such as electromagnetic interference D. All of the above https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 21/28 3/18/24, 4:16 AM 77. 6.SENSORS AND TRANSDUCERS 100 MCQ 75. Sensitivity of a sensor can be depicted by _______________ * 1 point Mark only one oval. a) Niquist plot b) Pole- zero plot c) Bode plot d) None of the mentioned 78. 76. Smallest change which a sensor can detect is ____________ * 1 point Mark only one oval. a) Resolution b) Accuracy c) Precision d) Scale 79. 77. Thermocouple generate output voltage according to ____________ * 1 point Mark only one oval. a) Circuit parameters b) Humidity c) Temperature d) Voltage 80. 78. Sensor is a type of transducer. * 1 point Mark only one oval. a) True b) False https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 22/28 3/18/24, 4:16 AM 81. 6.SENSORS AND TRANSDUCERS 100 MCQ 79. Which of the following is not an analog sensor? * 1 point Mark only one oval. a) Potentiometer b) Force-sensing resistors c) Accelerometers d) None of the mentioned 82. 80. Measured property have no relation with error. * 1 point Mark only one oval. a) True b) False 83. 81. _______ is the example of a photo emissive cell * 1 point Mark only one oval. A) Photo diode B) Photomultiplier C) LDR D) Photo transistor 84. 82. Based upon what parameters sensors will be chosen_ _ _ _ _ * 1 point Mark only one oval. A. Environmental factors B. Economic factor C. Static characteristics D. All the above https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 23/28 3/18/24, 4:16 AM 85. 6.SENSORS AND TRANSDUCERS 100 MCQ 83. Change in output of sensor with change in input is * 1 point Mark only one oval. A. Threashold B. Slew rate C. Sensitivity D. None of the mentioned 86. 84. A system will be error free if we remove all systematic error’. * 1 point Mark only one oval. A. True B. False 87. 85. Which of the following error is caused by poor calibration of the * 1 point instrument? Mark only one oval. A. Random error B. Gross error C. Systematic error D. Precision error 88. 86. Which of the following is not a characteristic of an ideal transducer? * 1 point Mark only one oval. A. High dynamic range B. Low linearity C. High repeatability D. Low noise https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 24/28 3/18/24, 4:16 AM 6.SENSORS AND TRANSDUCERS 100 MCQ 89. 87. _ _ _ _ _ _ _ signals are much more susceptible to noise * 1 point Mark only one oval. A. Analog signal B. Digital signal C. Both Analog and Digital signal D. None of the above 90. 88. Commonly used elements for wire strain gauges are __________ * 1 point Mark only one oval. A. Nickel and copper B. nickel and gold C. gold and brass D. silver and aluminium 91. 89. The change in resistance in strain gauge can be calculated by * 1 point _____________ Mark only one oval. A. Kelvin bridge B. Maxwell bridge C. Wheatstone bridge D. Wien bridge 92. 90. Bonded type strain gauge depends upon____ * 1 point Mark only one oval. A. Filament construction B. Material of the filament wire C. Cement used to bond the filament to the carrier D. All the above https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 25/28 3/18/24, 4:16 AM 93. 6.SENSORS AND TRANSDUCERS 100 MCQ 91. Magneto resistive sensors based on __ _ _ _ _ effect * 1 point Mark only one oval. A. Thomson B. Faradays C. Lenz D. Tesla 94. 92. In Hall Effect sensor, an electric potential is in third direction which is * 1 point ________ to the other two directions. Mark only one oval. A. Parallel B. Mutually Perpendicular C. 180 degree phase shift D. None of the above 95. 93. A _ _ _ _ _ _, is a measurement device that uses gravity to measure * 1 point the inclination of an object. Mark only one oval. A. Inclinometer B. Strain gauge C. Magentoresistance D. Gyroscope https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 26/28 3/18/24, 4:16 AM 96. 6.SENSORS AND TRANSDUCERS 100 MCQ 94. In Hall Effect sensor, an electric current is _______ to the direction of * 1 point the magnetic flux. Mark only one oval. A. Parallel B. Perpendicular C. 180 degree phase shift D. None of the above 97. 95. The Hall Effect is possessed by ________ * 1 point Mark only one oval. A. Metals B. Insulator C. Semiconductor D. both metals and semiconductor 98. 96. LVDT is a _ _ _ _ _ * 1 point Mark only one oval. A. Active transducer B. Passive transducer C. Both a) and b) D. None of the mentioned 99. 97. Potentiometer is a _ _ _ _ _ * 1 point Mark only one oval. A. Active transducer B. Passive transducer C. Both a) and b) D. None of the mentioned https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 27/28 3/18/24, 4:16 AM 100. 6.SENSORS AND TRANSDUCERS 100 MCQ 98. Piezoelectric transducer is used for measuring __________ * 1 point Mark only one oval. A. non-electrical quantities B. electrical quantities C. chemical quantities D. any quantity 101. 99. What is the full form of LASER? * 1 point Mark only one oval. A. Light Absorbent and Stimulated Emission of Radiations B. Light Absorbing Solar Energy Resource C. Light Amplification by Stimulated Emission of Radiations D. Light Amplification of Singular Emission of Radiations 102. 100. Signal conditioning is carried out in ______________ * 1 point Mark only one oval. A. Transducer housing B. Processor C. Network interface D. None of the mentioned This content is neither created nor endorsed by Google. Forms https://docs.google.com/forms/d/1mfAqQyG_irm0CSnhcg95XeFYcnSklu3oyVdfIPjyvvM/edit 28/28
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