Selection of Sensors MCQ’s

Electronics & Communication Engineering Mechatronics

This set of Mechatronics Multiple Choice Questions & Answers (MCQs) focuses on “Selection of Sensors”.

1. Which sensor should one prefer for accurate measurement of distance upto 1 meter?
a) Ultrasonic sensor
b) Infrared sensor
c) PIR sensor
d) Photoresistor sensor

2. Which sensor one should prefer for detecting black objects?
a) Ultrasonic sensor
b) Infrared sensor
c) PIR sensor
d) Photoresistor sensor

3. Which factor affects the least while selection of sensor?
a) Size
b) Accuracy
c) Colour
d) Durability

4. IR sensors can’t work in dark environment.
a) True
b) False

5. Which IC (integrated circuit) is present on NodeMCU?
a) ESP8266
b) Atmega326
c) Atmega328P
d) ESPN8266

6. HC-SR04 is an example of which type of sensor?
a) Infrared Sensor
b) Microwave Radar Sensor
c) Ultrasonic Sensor
d) Temperature Sensor

7. Arduino UNO is a microcontroller board based on ESP8266 IC.
a) True
b) False

8. Which colour does not reflect infrared rays?
a) White
b) Black
c) Red
d) Green

9. What is the maximum distance range of detection of the HC-SR04?
a) 10 cm
b) 10 m
c) 5 feet
d) 13 feet

10. Which sensor should be used for calculating pressure?
a) DHT11
b) LM335Z/NOPB
c) HC-SR04
d) MPX10DP

11. Which sensor should be used for calculating distance?
a) DHT11
b) LM335Z/NOPB
c) HC-SR04
d) MPX10DP

12. What is the maximum range of HC-05?
a) 5 metre
b) 10 meter
c) 20 meter
d) 50 meter

13. Which sensor should be used for calculating humidity?
a) DHT11
b) LM335Z/NOPB
c) HC-SR04
d) MPX10DP

14. Which sensor should be used for calculating temperature as well as humidity?
a) DHT11
b) LM335Z/NOPB
c) HC-SR04
d) MPX10DP

15. Which sensor is used in line following robots?
a) Infrared Sensor
b) Microwave Radar Sensor
c) Ultrasonic Sensor
d) Temperature Sensor

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