Sensors MCQ – Top 10 Multiple Choice Questions on Sensors

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A sensor is a device that takes input from the physical environment. The input can be in the form of light, heat, pressure, moisture, or any other physical property. Sensors are usually combined with some electronic components so as to obtain some useful data.

Given below are top 10 MCQ Questions on Sensors and their working.

The more correct a sensor can measure the more _______ it is

The more correct a senor can measure, the more ________ it is:

  1. Accurate
  2. Precise
  3. Scaled
  4. Extent

Correct answer: 1. Accurate

What is the smallest change which a sensor can detect termed

The smallest change which a sensor can detect is termed:

  1. Accuracy
  2. Precision
  3. Resolution
  4. Scale

Correct answer: 3. Resolution

Find brief answer with explanation

Touch screen of mobile phone uses

Touch screen of mobile phone uses:

  1. AFR Sensor
  2. Pellistor
  3. Viscometer
  4. Tactile sensors

Correct answer: 4. Tactile sensors

Touch screen of mobile phone uses tactile or capacitive touch sensors

The thermistor whose resistance increase by increasing temperature

The thermistor whose resistance increase by increasing temperature:

  1. NTC Thermistor
  2. PTC Thermistor
  3. None of these
  4. Any of these

Correct answer: 2. PTC Thermistor

Sound to electrical energy transducer is called what

Sound to electrical energy transducer:

  1. Microphone
  2. AFR
  3. Tactile sensor
  4. Pellistor

Correct answer: 1. Microphone

Which sensor is used by self-driving vehicles

Which type of sensor is used to measure the distance between the vehicle and other objects in its environment:

  1. Ultrasonic sensor
  2. Tactile sensor
  3. Motion sensor
  4. None of these

Correct answer: 1. Ultrasonic sensor

Self-driving cars are loaded with ultrasonic sensors that measure the distance between vehicles and other objects.

Correct statement about Digital Sensors

Which of following is the correct statement about digital sensors:

  1. Digital sensors provide information on all possible values within specified limit
  2. Digital sensors are limited to a finite set of values

Correct answer: 1. Digital sensors provide information on all possible values within specified limit

Sensors MCQ#8

You are driving your car and in the middle of the road, the engine loses power. Which of the following is the probable reason:

  1. PCM is getting incorrect information from the camshaft position sensor
  2. The ultrasonic sensor of the car is faulty
  3. Both of these
  4. None of these

Correct answer: 3. Both of these

DHT22 sensor is used to sense

DHT22 sensor is used to sense:

  1. Obstacles
  2. Resistance
  3. Position
  4. Humidity

Correct answer: 4. Humidity

How to use DHT22 Humidity sensor

Which Sensor is used for Process monitoring

Which of the following sensors is recommended for reliable temperature measurements in-process monitoring and control environments:

  1. iwr6843
  2. Rosemount 214C Sensor
  3. DHT11
  4. iwr6843

Correct answer: 2. Rosemount 214C Sensor

Rosemount(TM) of Emerson

A video on Sensors – What is Sensor and its applications

More Questions on Sensors:

  1. Tactile Sensor MCQ – Top 5 Multiple Choice Questions on Tactile Sensors
  2. Thermistor MCQ – Thermistor Multiple Choice Questions with Answers
  3. Mobile Phone Sensors
  4. Strain gauge MCQ

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