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For a fluid flowing over a flat plate, the Nusselt number at a point 0.5 m from the leading edge is 100. If the thermal conductivity of the fluid is 0.025 W/mK, the coefficient of convective heat transfer is
  • a)
    200 W / m2K
  • b)
    5 W / m2K
  • c)
    5 x 10-4 W / m2K
  • d)
    1.25 x 10-4 W / m2K
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
For a fluid flowing over a flat plate, the Nusselt number at a point ...
Nusselt number = hL/k
100= h x 0.5/0.025
h = 5 W / M2K
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Most Upvoted Answer
For a fluid flowing over a flat plate, the Nusselt number at a point ...
Given:
Nusselt number (Nu) = 100
Distance from the leading edge (x) = 0.5 m
Thermal conductivity (k) = 0.025 W/mK

To find: Coefficient of convective heat transfer (h)

Formula used:
Nu = h * x / k

Calculation:
Substituting the given values in the formula, we get:
100 = h * 0.5 / 0.025
h = 5 W/m2K

Therefore, the coefficient of convective heat transfer is 5 W/m2K.

Explanation:
Heat transfer refers to the transfer of thermal energy from one body to another. In this case, we are considering heat transfer between a fluid and a flat plate. The Nusselt number is a dimensionless parameter that relates the convective heat transfer to the conductive heat transfer. It is defined as the ratio of convective heat transfer to conductive heat transfer.

The coefficient of convective heat transfer (h) represents the rate at which heat is transferred between the fluid and the plate. It depends on various factors such as fluid properties, flow rate, and geometry of the system.

In this question, we are given the Nusselt number and the distance from the leading edge. Using the formula for Nusselt number, we can find the coefficient of convective heat transfer.

The thermal conductivity of the fluid is also given, but it is not used in the formula to find the coefficient of convective heat transfer. It is a property of the fluid that determines how easily heat can be conducted through it.

Therefore, the correct answer is option B, which is 5 W/m2K.
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For a fluid flowing over a flat plate, the Nusselt number at a point 0.5 m from the leading edge is 100. If the thermal conductivity of the fluid is 0.025 W/mK, the coefficient of convective heat transfer isa)200 W / m2Kb)5 W / m2Kc)5 x 10-4 W / m2Kd)1.25 x 10-4 W / m2KCorrect answer is option 'B'. Can you explain this answer?
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For a fluid flowing over a flat plate, the Nusselt number at a point 0.5 m from the leading edge is 100. If the thermal conductivity of the fluid is 0.025 W/mK, the coefficient of convective heat transfer isa)200 W / m2Kb)5 W / m2Kc)5 x 10-4 W / m2Kd)1.25 x 10-4 W / m2KCorrect answer is option 'B'. 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 a fluid flowing over a flat plate, the Nusselt number at a point 0.5 m from the leading edge is 100. If the thermal conductivity of the fluid is 0.025 W/mK, the coefficient of convective heat transfer isa)200 W / m2Kb)5 W / m2Kc)5 x 10-4 W / m2Kd)1.25 x 10-4 W / m2KCorrect answer is option 'B'. 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 a fluid flowing over a flat plate, the Nusselt number at a point 0.5 m from the leading edge is 100. If the thermal conductivity of the fluid is 0.025 W/mK, the coefficient of convective heat transfer isa)200 W / m2Kb)5 W / m2Kc)5 x 10-4 W / m2Kd)1.25 x 10-4 W / m2KCorrect answer is option 'B'. Can you explain this answer?.
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