GATE Exam > GATE Questions > Thermocouple is a ______________.a)Primary d...
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Thermocouple is a ______________.
- a)Primary device
- b)Secondary transducer
- c)Tertiary transducer
- d)None of the mentioned
Correct answer is option 'A'. Can you explain this answer?
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Thermocouple is a ______________.a)Primary deviceb)Secondary transduc...
A thermocouple is a device that converts thermal energy to electrical energy and can be treated as a primary device.
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Thermocouple is a ______________.a)Primary deviceb)Secondary transduc...
Thermocouple is a Primary device
A thermocouple is a primary device used for temperature measurement. It consists of two dissimilar metal wires joined at one end to form a junction. When there is a temperature difference between the two junctions, it creates a voltage known as the thermoelectric voltage.
Working Principle of Thermocouple
- When two dissimilar metals are joined together to form a closed circuit, a voltage is generated when there is a temperature difference between the two junctions. This phenomenon is known as the Seebeck effect.
- The magnitude of the voltage generated depends on the temperature difference and the characteristics of the metals used.
- The voltage generated by the thermocouple is directly proportional to the temperature difference between the hot and cold junctions.
- By measuring the voltage, the temperature can be determined using a suitable reference table or a mathematical equation.
Characteristics of Thermocouples
- Wide Temperature Range: Thermocouples can measure a wide range of temperatures, from cryogenic temperatures to extremely high temperatures.
- Fast Response Time: Thermocouples have a fast response time, allowing for real-time temperature monitoring and control.
- Simple Construction: Thermocouples are simple in construction, consisting of just two metal wires joined together.
- Durable and Rugged: Thermocouples are highly durable and can withstand harsh environments, making them suitable for various industrial applications.
- Wide Variety: There are different types of thermocouples available, each with its own temperature range and characteristics. Common types include J, K, T, and E thermocouples.
Applications of Thermocouples
- Industrial Processes: Thermocouples are widely used in industries such as manufacturing, petrochemical, and power plants for temperature monitoring and control.
- HVAC Systems: Thermocouples are used in heating, ventilation, and air conditioning (HVAC) systems for temperature regulation.
- Food Industry: Thermocouples are used to measure and control temperatures in food processing and storage applications.
- Aerospace and Automotive: Thermocouples are used in aerospace and automotive industries for engine temperature monitoring and control.
- Research and Laboratory: Thermocouples are used in scientific research and laboratory experiments for accurate temperature measurement.
Conclusion
Thermocouples are primary devices used for temperature measurement. They work based on the Seebeck effect and generate a voltage proportional to the temperature difference. Thermocouples have various characteristics like a wide temperature range, fast response time, and durability, making them suitable for a wide range of applications.
A thermocouple is a primary device used for temperature measurement. It consists of two dissimilar metal wires joined at one end to form a junction. When there is a temperature difference between the two junctions, it creates a voltage known as the thermoelectric voltage.
Working Principle of Thermocouple
- When two dissimilar metals are joined together to form a closed circuit, a voltage is generated when there is a temperature difference between the two junctions. This phenomenon is known as the Seebeck effect.
- The magnitude of the voltage generated depends on the temperature difference and the characteristics of the metals used.
- The voltage generated by the thermocouple is directly proportional to the temperature difference between the hot and cold junctions.
- By measuring the voltage, the temperature can be determined using a suitable reference table or a mathematical equation.
Characteristics of Thermocouples
- Wide Temperature Range: Thermocouples can measure a wide range of temperatures, from cryogenic temperatures to extremely high temperatures.
- Fast Response Time: Thermocouples have a fast response time, allowing for real-time temperature monitoring and control.
- Simple Construction: Thermocouples are simple in construction, consisting of just two metal wires joined together.
- Durable and Rugged: Thermocouples are highly durable and can withstand harsh environments, making them suitable for various industrial applications.
- Wide Variety: There are different types of thermocouples available, each with its own temperature range and characteristics. Common types include J, K, T, and E thermocouples.
Applications of Thermocouples
- Industrial Processes: Thermocouples are widely used in industries such as manufacturing, petrochemical, and power plants for temperature monitoring and control.
- HVAC Systems: Thermocouples are used in heating, ventilation, and air conditioning (HVAC) systems for temperature regulation.
- Food Industry: Thermocouples are used to measure and control temperatures in food processing and storage applications.
- Aerospace and Automotive: Thermocouples are used in aerospace and automotive industries for engine temperature monitoring and control.
- Research and Laboratory: Thermocouples are used in scientific research and laboratory experiments for accurate temperature measurement.
Conclusion
Thermocouples are primary devices used for temperature measurement. They work based on the Seebeck effect and generate a voltage proportional to the temperature difference. Thermocouples have various characteristics like a wide temperature range, fast response time, and durability, making them suitable for a wide range of applications.
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Thermocouple is a ______________.a)Primary deviceb)Secondary transducerc)Tertiary transducerd)None of the mentionedCorrect answer is option 'A'. Can you explain this answer?
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Thermocouple is a ______________.a)Primary deviceb)Secondary transducerc)Tertiary transducerd)None of the mentionedCorrect answer is option 'A'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about Thermocouple is a ______________.a)Primary deviceb)Secondary transducerc)Tertiary transducerd)None of the mentionedCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Thermocouple is a ______________.a)Primary deviceb)Secondary transducerc)Tertiary transducerd)None of the mentionedCorrect answer is option 'A'. Can you explain this answer?.
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