Basic Temperature Sensors MCQ Questions Answers

Test your knowledge of basic temperature sensors with this MCQ questions and answers on types, working principles, and advantages.

Table of Contents

Basic Temperature Sensors MCQ

This detailed video provides the temperature sensors multiple choice questions and answers with explanations.

Question 1

Which temperature sensor works by measuring the change in electrical resistance of a material?

A. Thermocouple

B. Thermistor

C. Infrared Sensor

D. Pyrometer

Show the Answer

Thermistor

Question 2

How does a thermocouple generate a voltage?

A. By changing resistance

B. By varying capacitance

C. By generating infrared radiation

D. By the Seebeck effect

Show the Answer

By the Seebeck effect

Question 3

What is the principle behind the operation of an RTD?

A. Seebeck effect

B. Change in inductance

C. Change in resistance

D. Emission of infrared radiation

Show the Answer

Change in resistance

Question 4

What type of sensor uses two metals with different coefficients of expansion to measure temperature?

A. Pyrometer

B. Bimetallic Strip

C. RTD

D. Thermistor

Show the Answer

Bimetallic Strip

Question 5

Which type of temperature sensor provides rapid response to temperature changes?

A. RTD

B. Thermistor

C. Thermocouple

D. Infrared Sensor

Show the Answer

Thermocouple

Question 6

How does a thermistor’s resistance typically change with temperature?

A. Increases linearly

B. Decreases linearly

C. Increases exponentially

D. Decreases exponentially

Show the Answer

Decreases exponentially

Question 7

Which sensor can measure temperature without physical contact?

A. Thermistor

B. RTD

C. Infrared Sensor

D. Bimetallic Strip

Show the Answer

Infrared Sensor

Question 8

What is a primary disadvantage of using thermocouples for temperature measurement?

A. High cost

B. Limited temperature range

C. Low sensitivity

D. Complex circuitry

Show the Answer

Low sensitivity

Question 9

Which temperature sensor type uses a liquid-in-glass mechanism for temperature measurement?

A. Thermocouple

B. RTD

C. Mercury Thermometer

D. Thermistor

Show the Answer

Mercury Thermometer

Question 10

How does a bimetallic strip temperature sensor work?

A. By generating a voltage

B. By changing capacitance

C. By bending due to expansion

D. By changing resistance

Show the Answer

By bending due to expansion

Question 11

What is a common use for thermistors in electronic circuits?

A. Voltage regulation

B. Temperature compensation

C. Signal amplification

D. Power conversion

Show the Answer

Temperature compensation

Question 12

How does a thermocouple measure temperature?

A. By changing resistance

B. By generating a voltage

C. By varying capacitance

D. By changing inductance

Show the Answer

By generating a voltage

Question 13

Which temperature sensor is often used for non-contact temperature measurements in industrial settings?

A. RTD

B. Thermistor

C. Infrared Sensor

D. Thermocouple

Show the Answer

Infrared Sensor

Question 14

What material is commonly used in RTD elements?

A. Silicon

B. Platinum

C. Nickel

D. Copper

Show the Answer

Platinum

Question 15

What is the main reason RTDs are preferred in industrial applications?

A. Low cost

B. High durability

C. Fast response time

D. High accuracy

Show the Answer

High accuracy

Question 16

Which type of temperature sensor is commonly used in thermostats for household heating systems?

A. Thermocouple

B. RTD

C. Thermistor

D. Infrared Sensor

Show the Answer

Thermistor

Question 17

How does the accuracy of thermocouples compare to RTDs and thermistors?

A. More accurate

B. Less accurate

C. Equally accurate

D. Varies with temperature

Show the Answer

Less accurate

Question 18

Which property of infrared radiation is utilized by infrared temperature sensors?

A. Emission of visible light

B. Absorption by liquids

C. Reflection by metals

D. Emission by all objects

Show the Answer

Emission by all objects

Question 19

What is a key advantage of RTDs over thermocouples?

A. Higher temperature range

B. Greater durability

C. Better linearity

D. Faster response time

Show the Answer

Better linearity

Question 20

How do fiber optic temperature sensors measure temperature?

A. By changing light intensity

B. By changing electrical resistance

C. By bending with temperature

D. By emitting infrared radiation

Show the Answer

By changing light intensity

Question 21

Why are thermocouples commonly used in gas turbine engines?

A. High accuracy

B. Fast response and wide range

C. Low cost

D. Easy calibration

Show the Answer

Fast response and wide range

Question 22

How do infrared temperature sensors measure temperature?

A. By touching the object

B. By detecting visible light

C. By measuring emitted infrared radiation

D. By changing resistance

Show the Answer

By measuring emitted infrared radiation

Question 23

How do thermocouples typically handle very high temperature environments?

A. By cooling the sensor

B. By using protective coatings

C. By selecting specific metal combinations

D. By increasing resistance

Show the Answer

By selecting specific metal combinations

Read Next:

Don't Miss Our Updates
Be the first to get exclusive content straight to your email.
We promise not to spam you. You can unsubscribe at any time.
Invalid email address

Leave a Comment

Share via
Follow us and never miss an update!