Measurement and Data Acquisition MCQs

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1. Which device is commonly used for measuring direct current (DC) voltage in electronic circuits? A) Voltmeter B) Ammeter C) Ohmmeter D) Wattmeter Correct Answer: A) Voltmeter 2. What type of sensor is typically used for measuring ambient temperature in weather stations? A) Thermocouple B) Resistance Temperature Detector (RTD) C) Thermistor D) Mercury-in-glass thermometer Correct Answer: C) Thermistor 3. Which instrument is used for measuring the flow rate of liquids in industrial pipelines? A) Flowmeter B) Manometer C) Hygrometer D) Tachometer Correct Answer: A) Flowmeter 4. What does an anemometer measure? A) Wind direction B) Wind speed C) Air pressure D) Humidity Correct Answer: B) Wind speed 5. Which device is used for measuring the pH of a solution in laboratory applications? A) Barometer B) Spectrometer C) pH meter D) Refractometer Correct Answer: C) pH meter 6. What does a strain gauge measure? A) Force B) Pressure C) Acceleration D) Temperature Correct Answer: A) Force 7. Which instrument is used for measuring the intensity of electromagnetic radiation? A) Spectrometer B) Luminometer C) Radiometer D) Photometer Correct Answer: C) Radiometer 8. What does a hygrometer measure? A) Wind speed B) Humidity C) Air pressure D) Temperature Correct Answer: B) Humidity 9. Which sensor is commonly used for measuring the level of water in a tank? A) Strain gauge B) Capacitive sensor C) Hall Effect sensor D) Photodetector Correct Answer: B) Capacitive sensor 10. What does a tachometer measure? A) Temperature B) Pressure C) Flow rate D) Rotational speed Correct Answer: D) Rotational speed 11. Which device is commonly used for measuring alternating current (AC) voltage in electrical systems? A) Ammeter B) Oscilloscope C) Voltmeter D) Ohmmeter Correct Answer: C) Voltmeter 12. What type of sensor is typically used for measuring pressure in industrial applications? A) Thermocouple B) Piezoelectric sensor C) Photodetector D) Hall Effect sensor Correct Answer: B) Piezoelectric sensor 13. Which instrument is used for measuring the depth of water in a reservoir? A) Flowmeter B) Altimeter C) Depth gauge D) Manometer Correct Answer: C) Depth gauge 14. What does a lux meter measure? A) Sound intensity B) Light intensity C) Electric current D) Magnetic field strength Correct Answer: B) Light intensity 15. Which sensor is commonly used for measuring acceleration in automotive crash testing? A) Tachometer B) Barometer C) Accelerometer D) Hygrometer Correct Answer: C) Accelerometer 16. What does a spectrophotometer measure? A) Sound frequency B) Light absorption C) Electrical resistance D) Magnetic field strength Correct Answer: B) Light absorption 17. Which instrument is used for measuring the level of sound intensity in decibels? A) Barometer B) Anemometer C) Sound level meter D) Thermometer Correct Answer: C) Sound level meter 18. What does a pyrometer measure? A) Humidity B) Pressure C) Temperature D) Flow rate Correct Answer: C) Temperature 19. Which sensor is commonly used for measuring the position of a linear actuator? A) Potentiometer B) Strain gauge C) Capacitive sensor D) Hall Effect sensor Correct Answer: A) Potentiometer 20. What does a densitometer measure? A) Density of gases B) Density of liquids C) Density of solids D) Density of electromagnetic fields Correct Answer: B) Density of liquids 21. Which instrument is used for measuring the speed of rotation of a shaft in an engine? A) Anemometer B) Tachometer C) Barometer D) Hygrometer Correct Answer: B) Tachometer 22. What does a calorimeter measure? A) Electric charge B) Heat transfer C) Light intensity D) Magnetic field strength Correct Answer: B) Heat transfer 23. Which sensor is commonly used for measuring the level of liquid nitrogen in cryogenic storage tanks? A) Capacitive sensor B) Ultrasonic sensor C) Hall Effect sensor D) Cryogenic sensor Correct Answer: D) Cryogenic sensor 24. What does an anemometer measure? A) Wind direction B) Wind speed C) Air pressure D) Humidity Correct Answer: B) Wind speed 25. Which instrument is used for measuring the concentration of pollutants in ambient air? A) Pyranometer B) Photometer C) Spectrometer D) Gas chromatograph Correct Answer: D) Gas chromatograph 26. What does a densitometer measure? A) Density of gases B) Density of liquids C) Density of solids D) Density of electromagnetic fields Correct Answer: B) Density of liquids 27. Which device is commonly used for measuring the force applied to a mechanical component? A) Altimeter B) Dynamometer C) Manometer D) Ammeter Correct Answer: B) Dynamometer 28. What type of sensor is typically used for measuring oxygen levels in blood in medical applications? A) Pulse oximeter B) Respirometer C) Oxidation sensor D) Blood gas analyzer Correct Answer: A) Pulse oximeter 29. Which instrument is used for measuring the intensity of electromagnetic radiation across different wavelengths? A) Luminometer B) Spectrophotometer C) Refractometer D) Photometer Correct Answer: B) Spectrophotometer 30. What does a barometer measure? A) Wind speed B) Atmospheric pressure C) Humidity D) Temperature Correct Answer: B) Atmospheric pressure 31. Which device is commonly used for measuring the electrical resistance of a component? A) Ammeter B) Voltmeter C) Ohmmeter D) Wattmeter Correct Answer: C) Ohmmeter 32. What does a hydrometer measure? A) Wind speed B) Humidity C) Specific gravity of liquids D) Air pressure Correct Answer: C) Specific gravity of liquids 33. Which instrument is used for measuring the altitude above sea level? A) Anemometer B) Altimeter C) Barometer D) Tachometer Correct Answer: B) Altimeter 34. What does a chromatograph measure? A) Heat transfer B) Electrical conductivity C) Pressure D) Chemical composition of substances Correct Answer: D) Chemical composition of substances 35. Which sensor is commonly used for measuring the speed of a vehicle? A) GPS receiver B) LIDAR sensor C) Radar sensor D) Thermocouple Correct Answer: A) GPS receiver 36. What does a lux meter measure? A) Sound intensity B) Light intensity C) Electric current D) Magnetic field strength Correct Answer: B) Light intensity 37. Which instrument is used for measuring the amount of oxygen consumed by a living organism or cell culture? A) Oximeter B) Respirometer C) Spirometer D) Spectrometer Correct Answer: B) Respirometer 38. What does an inclinometer measure? A) Angular displacement B) Magnetic field strength C) Humidity D) Electric current Correct Answer: A) Angular displacement 39. Which device is commonly used for measuring the voltage drop across a resistor or component in a circuit? A) Ammeter B) Voltmeter C) Ohmmeter D) Wattmeter Correct Answer: B) Voltmeter 40. What does a colorimeter measure? A) Color intensity B) Light intensity C) Electric current D) Magnetic field strength Correct Answer: A) Color intensity 41. Which device is commonly used for measuring the speed of a rotating shaft in industrial machinery? A) Tachometer B) Barometer C) Hygrometer D) Altimeter Correct Answer: A) Tachometer 42. What does a dynamometer measure? A) Force B) Pressure C) Flow rate D) Temperature Correct Answer: A) Force  

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