GATE ME · 2017 · ME-2
Question 47: Heat-Transfer
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Question 47
ME-2MCQ2 marksNeeds review
A metal ball of diameter 60 mm is initially at 220 °C. The ball is suddenly cooled by an air jet of 20 °C. The heat transfer coefficient is 200 W/m
·K. The specific heat, thermal conductivity and density of the metal ball are 400 J/kg·K, 400 W/m·K and 900 kg/m
, respectively. The ball temperature (in °C) after 90 seconds will be approximatelyYour answerChoose one option.
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2017ME-2
GATE ME 2017 · Paper 2
Mechanical Engineering · Original paper archive
- Section
- Section ME-2
- Question type
- Multiple choice (MCQ)
- Marks
- 2 marks
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