Railways Exam > Railways Questions > For quick response of a thermocouple to obse...
Start Learning for Free
For quick response of a thermocouple to observe varying temperature of fluids
- a)wire diameter must be large
- b)wire material density must be large
- c)wire material specific heat must be large
- d)wire surface heat transfer coefficients must be large
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
For quick response of a thermocouple to observe varying temperature o...
If the surface that transfer coefficient is large then the rate of heat transfer will be more and hence thermocouple will be quick to respond to the varying temperature of fluids.
View all questions of this test
Most Upvoted Answer
For quick response of a thermocouple to observe varying temperature o...
Quick response of a thermocouple to observe varying temperature of fluids
To ensure a quick response of a thermocouple to observe varying temperature of fluids, the wire surface heat transfer coefficients must be large. Let's understand the significance of each option and why option 'D' is the correct answer.
A) Wire diameter must be large:
- The diameter of the wire does not directly affect the response time of the thermocouple.
- Increasing the wire diameter may improve the mechanical strength of the thermocouple, but it does not enhance its ability to respond quickly to temperature changes.
B) Wire material density must be large:
- The density of the wire material is irrelevant to the response time of the thermocouple.
- Density is a measure of mass per unit volume and does not impact the thermocouple's ability to detect temperature changes quickly.
C) Wire material specific heat must be large:
- Specific heat refers to the amount of heat required to raise the temperature of a substance by a certain amount.
- While specific heat plays a role in heat transfer, it does not directly affect the response time of the thermocouple.
- The specific heat of the wire material does not impact the thermocouple's ability to sense temperature variations in fluids quickly.
D) Wire surface heat transfer coefficients must be large:
- The surface heat transfer coefficient is a measure of the rate at which heat is transferred between a solid surface and a fluid.
- A large surface heat transfer coefficient indicates that heat is transferred more efficiently between the wire surface and the surrounding fluid.
- A thermocouple with a higher surface heat transfer coefficient will respond more quickly to changes in the fluid's temperature.
- This is because the larger heat transfer coefficient facilitates faster heat exchange, allowing the thermocouple to detect temperature variations more rapidly.
Therefore, the correct answer is option 'D' - wire surface heat transfer coefficients must be large in order to ensure a quick response of a thermocouple to observe varying temperature of fluids.
To ensure a quick response of a thermocouple to observe varying temperature of fluids, the wire surface heat transfer coefficients must be large. Let's understand the significance of each option and why option 'D' is the correct answer.
A) Wire diameter must be large:
- The diameter of the wire does not directly affect the response time of the thermocouple.
- Increasing the wire diameter may improve the mechanical strength of the thermocouple, but it does not enhance its ability to respond quickly to temperature changes.
B) Wire material density must be large:
- The density of the wire material is irrelevant to the response time of the thermocouple.
- Density is a measure of mass per unit volume and does not impact the thermocouple's ability to detect temperature changes quickly.
C) Wire material specific heat must be large:
- Specific heat refers to the amount of heat required to raise the temperature of a substance by a certain amount.
- While specific heat plays a role in heat transfer, it does not directly affect the response time of the thermocouple.
- The specific heat of the wire material does not impact the thermocouple's ability to sense temperature variations in fluids quickly.
D) Wire surface heat transfer coefficients must be large:
- The surface heat transfer coefficient is a measure of the rate at which heat is transferred between a solid surface and a fluid.
- A large surface heat transfer coefficient indicates that heat is transferred more efficiently between the wire surface and the surrounding fluid.
- A thermocouple with a higher surface heat transfer coefficient will respond more quickly to changes in the fluid's temperature.
- This is because the larger heat transfer coefficient facilitates faster heat exchange, allowing the thermocouple to detect temperature variations more rapidly.
Therefore, the correct answer is option 'D' - wire surface heat transfer coefficients must be large in order to ensure a quick response of a thermocouple to observe varying temperature of fluids.
Attention Railways Students!
To make sure you are not studying endlessly, EduRev has designed Railways study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Railways.
|
Explore Courses for Railways exam
|
|
Top Courses for RailwaysView all
For quick response of a thermocouple to observe varying temperature of fluidsa)wire diameter must be largeb)wire material density must be largec)wire material specific heat must be larged)wire surface heat transfer coefficients must be largeCorrect answer is option 'D'. Can you explain this answer?
Question Description
For quick response of a thermocouple to observe varying temperature of fluidsa)wire diameter must be largeb)wire material density must be largec)wire material specific heat must be larged)wire surface heat transfer coefficients must be largeCorrect answer is option 'D'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about For quick response of a thermocouple to observe varying temperature of fluidsa)wire diameter must be largeb)wire material density must be largec)wire material specific heat must be larged)wire surface heat transfer coefficients must be largeCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For quick response of a thermocouple to observe varying temperature of fluidsa)wire diameter must be largeb)wire material density must be largec)wire material specific heat must be larged)wire surface heat transfer coefficients must be largeCorrect answer is option 'D'. Can you explain this answer?.
For quick response of a thermocouple to observe varying temperature of fluidsa)wire diameter must be largeb)wire material density must be largec)wire material specific heat must be larged)wire surface heat transfer coefficients must be largeCorrect answer is option 'D'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about For quick response of a thermocouple to observe varying temperature of fluidsa)wire diameter must be largeb)wire material density must be largec)wire material specific heat must be larged)wire surface heat transfer coefficients must be largeCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For quick response of a thermocouple to observe varying temperature of fluidsa)wire diameter must be largeb)wire material density must be largec)wire material specific heat must be larged)wire surface heat transfer coefficients must be largeCorrect answer is option 'D'. Can you explain this answer?.
Solutions for For quick response of a thermocouple to observe varying temperature of fluidsa)wire diameter must be largeb)wire material density must be largec)wire material specific heat must be larged)wire surface heat transfer coefficients must be largeCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Railways.
Download more important topics, notes, lectures and mock test series for Railways Exam by signing up for free.
Here you can find the meaning of For quick response of a thermocouple to observe varying temperature of fluidsa)wire diameter must be largeb)wire material density must be largec)wire material specific heat must be larged)wire surface heat transfer coefficients must be largeCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
For quick response of a thermocouple to observe varying temperature of fluidsa)wire diameter must be largeb)wire material density must be largec)wire material specific heat must be larged)wire surface heat transfer coefficients must be largeCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for For quick response of a thermocouple to observe varying temperature of fluidsa)wire diameter must be largeb)wire material density must be largec)wire material specific heat must be larged)wire surface heat transfer coefficients must be largeCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of For quick response of a thermocouple to observe varying temperature of fluidsa)wire diameter must be largeb)wire material density must be largec)wire material specific heat must be larged)wire surface heat transfer coefficients must be largeCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice For quick response of a thermocouple to observe varying temperature of fluidsa)wire diameter must be largeb)wire material density must be largec)wire material specific heat must be larged)wire surface heat transfer coefficients must be largeCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Railways tests.
|
|
Explore Courses for Railways exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup