Chemical Engineering Exam > Chemical Engineering Questions > On a summer day, a scooter rider feels more c...
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On a summer day, a scooter rider feels more comfortable while on the move than while at a stop light because
- a)An object in motion captures less radiation
- b)Air has a low specific heat and hence it is cooler
- c)More heat is loss by convection and radiation while in motion
- d)Air is transparent to radiation and hence it is cooler than the body
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
On a summer day, a scooter rider feels more comfortable while on the m...
The situation corresponds to forced convection when the scooter is in motion and the convective heat transfer coefficient for forced convection is greater than that for free convection.
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On a summer day, a scooter rider feels more comfortable while on the m...
Explanation:
The correct answer is option 'D' because the air is transparent to radiation and hence it feels cooler than the body. This is due to the fact that the human body emits radiation in the form of heat, which is absorbed by the surrounding environment. However, since air is transparent to radiation, it does not absorb the heat radiation, which makes it feel cooler to the body.
In addition, when the scooter is in motion, the air moves over the rider's body, which causes convective heat loss. This means that the heat is transferred from the rider's body to the moving air, which makes the rider feel cooler. On the other hand, when the scooter is stopped at a traffic light, there is no air movement, which means that there is no convective heat loss, and the rider feels hotter.
Conclusion:
In conclusion, the rider of a scooter feels more comfortable while on the move than while at a stop light because the air is transparent to radiation and hence it feels cooler than the body, and more heat is lost by convection while in motion.
The correct answer is option 'D' because the air is transparent to radiation and hence it feels cooler than the body. This is due to the fact that the human body emits radiation in the form of heat, which is absorbed by the surrounding environment. However, since air is transparent to radiation, it does not absorb the heat radiation, which makes it feel cooler to the body.
In addition, when the scooter is in motion, the air moves over the rider's body, which causes convective heat loss. This means that the heat is transferred from the rider's body to the moving air, which makes the rider feel cooler. On the other hand, when the scooter is stopped at a traffic light, there is no air movement, which means that there is no convective heat loss, and the rider feels hotter.
Conclusion:
In conclusion, the rider of a scooter feels more comfortable while on the move than while at a stop light because the air is transparent to radiation and hence it feels cooler than the body, and more heat is lost by convection while in motion.
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On a summer day, a scooter rider feels more comfortable while on the move than while at a stop light becausea)An object in motion captures less radiationb)Air has a low specific heat and hence it is coolerc)More heat is loss by convection and radiation while in motiond)Air is transparent to radiation and hence it is cooler than the bodyCorrect answer is option 'D'. Can you explain this answer?
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On a summer day, a scooter rider feels more comfortable while on the move than while at a stop light becausea)An object in motion captures less radiationb)Air has a low specific heat and hence it is coolerc)More heat is loss by convection and radiation while in motiond)Air is transparent to radiation and hence it is cooler than the bodyCorrect answer is option 'D'. Can you explain this answer? for Chemical Engineering 2024 is part of Chemical Engineering preparation. The Question and answers have been prepared according to the Chemical Engineering exam syllabus. Information about On a summer day, a scooter rider feels more comfortable while on the move than while at a stop light becausea)An object in motion captures less radiationb)Air has a low specific heat and hence it is coolerc)More heat is loss by convection and radiation while in motiond)Air is transparent to radiation and hence it is cooler than the bodyCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Chemical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for On a summer day, a scooter rider feels more comfortable while on the move than while at a stop light becausea)An object in motion captures less radiationb)Air has a low specific heat and hence it is coolerc)More heat is loss by convection and radiation while in motiond)Air is transparent to radiation and hence it is cooler than the bodyCorrect answer is option 'D'. Can you explain this answer?.
On a summer day, a scooter rider feels more comfortable while on the move than while at a stop light becausea)An object in motion captures less radiationb)Air has a low specific heat and hence it is coolerc)More heat is loss by convection and radiation while in motiond)Air is transparent to radiation and hence it is cooler than the bodyCorrect answer is option 'D'. Can you explain this answer? for Chemical Engineering 2024 is part of Chemical Engineering preparation. The Question and answers have been prepared according to the Chemical Engineering exam syllabus. Information about On a summer day, a scooter rider feels more comfortable while on the move than while at a stop light becausea)An object in motion captures less radiationb)Air has a low specific heat and hence it is coolerc)More heat is loss by convection and radiation while in motiond)Air is transparent to radiation and hence it is cooler than the bodyCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Chemical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for On a summer day, a scooter rider feels more comfortable while on the move than while at a stop light becausea)An object in motion captures less radiationb)Air has a low specific heat and hence it is coolerc)More heat is loss by convection and radiation while in motiond)Air is transparent to radiation and hence it is cooler than the bodyCorrect answer is option 'D'. Can you explain this answer?.
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