Agricultural Sensors and Data Acquisition MCQs

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1. : What is the primary purpose of agricultural sensors?
(A) Entertainment
(B) Measuring physical and environmental parameters in farming
(C) Predicting market prices
(D) Broadcasting seeds

2. : Which sensor is commonly used for soil moisture measurement?
(A) Tensiometer
(B) Anemometer
(C) Hygrometer
(D) Rain gauge

3. : Data acquisition in agriculture refers to:
(A) Collecting data from sensors for analysis and decision-making
(B) Buying land
(C) Farmer’s handwritten notes
(D) Satellite launching

4. : Which sensor is used to measure air temperature in crop fields?
(A) Thermistor or thermometer sensor
(B) Hygrometer
(C) Anemometer
(D) Pyranometer

5. : A pyranometer is used for measuring:
(A) Solar radiation
(B) Soil pH
(C) Wind speed
(D) Rainfall

6. : Which type of sensor is used for nutrient monitoring in soil?
(A) Ion-selective electrodes
(B) Anemometer
(C) GPS receiver
(D) Rain gauge

7. : Leaf wetness sensors are important for:
(A) Predicting disease outbreaks in crops
(B) Estimating soil texture
(C) Detecting soil color
(D) Measuring farmer income

8. : Anemometer in agriculture measures:
(A) Wind speed
(B) Soil depth
(C) Water salinity
(D) Crop density

9. : Which sensor is useful for monitoring CO₂ concentration in greenhouses?
(A) NDIR (Non-Dispersive Infrared) sensor
(B) Tensiometer
(C) GPS sensor
(D) Rain gauge

10. : In data acquisition systems, ADC stands for:
(A) Analog-to-Digital Converter
(B) Agricultural Data Collection
(C) Automated Data Calibration
(D) Advanced Device Controller

11. : Which agricultural parameter is measured by a rain gauge?
(A) Rainfall
(B) Soil nutrients
(C) Crop height
(D) Air temperature

12. : Which sensor is used for mapping soil electrical conductivity (EC)?
(A) EM38 sensor
(B) Hygrometer
(C) Pyranometer
(D) Thermistor

13. : Remote sensing data is considered part of:
(A) Indirect data acquisition in agriculture
(B) Farmer’s manual notes
(C) Weather news only
(D) Entertainment

14. : Which of the following is a key component of a data acquisition system?
(A) Sensors, ADC, data logger, and communication module
(B) Farmer’s diary
(C) Mobile camera only
(D) Hand-drawn maps

15. : Soil pH in agriculture is measured using:
(A) pH meter or ion-selective electrode
(B) Rain gauge
(C) Anemometer
(D) Pyranometer

16. : Which communication technologies are widely used in agricultural data acquisition?
(A) IoT, LoRaWAN, and GSM
(B) CD player
(C) Bluetooth speakers
(D) Radio entertainment

17. : A thermal sensor in agriculture is mainly used for:
(A) Detecting crop water stress
(B) Measuring soil color
(C) Estimating farmer income
(D) Recording market prices

18. : Data loggers in agriculture are used for:
(A) Recording sensor data over time
(B) Logging tractors
(C) Market data entry
(D) Farmer payments

19. : Which parameter is NOT directly measured by agricultural sensors?
(A) Soil moisture
(B) Crop health
(C) Air humidity
(D) Farmer’s profit

20. : NDVI data acquisition in agriculture is mainly from:
(A) Satellite and drone sensors
(B) Farmer notebooks
(C) Radio signals
(D) Thermometers only

21. : Which system integrates multiple sensors for smart farming?
(A) IoT-based sensor networks
(B) Manual logbooks
(C) SMS-only services
(D) Entertainment channels

22. : Ultrasonic sensors in agriculture are used for:
(A) Measuring crop height and canopy structure
(B) Estimating soil texture
(C) Measuring CO₂
(D) Detecting water salinity

23. : Which index can be derived using multispectral sensor data?
(A) NDVI (Normalized Difference Vegetation Index)
(B) GDP Index
(C) Price Index
(D) Literacy Index

24. : Which factor ensures accuracy of agricultural data acquisition?
(A) Calibration of sensors
(B) Farmer’s handwriting
(C) Market surveys
(D) Guesswork

25. : The future of agricultural sensors and data acquisition is based on:
(A) AI, machine learning, and real-time big data analytics
(B) Handwritten records
(C) Ignoring technology
(D) Traditional tools only