GATE XE · 2017 · XE-B
Question 22: Flow and Fluid Properties
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Question 22
XE-BNAT2 marksNeeds review
A spherical balloon of diameter 15 m is supposed to lift a load of 3000 N. The lifting of load is achieved by heating the air inside the balloon. Assume, air to be an ideal gas and atmospheric pressure either outside or inside the balloon. The value of acceleration due to gravity is 9.81 m/s² and the values of temperature and density of atmospheric air are 15°C and 1.2 kg/m³, respectively. In order to lift the specified load, the air inside the balloon should be heated to a temperature (°C) of __________
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2017XE-B
GATE XE 2017 · Paper 1
Engineering Sciences · Original paper archive
- Section
- Section XE-B
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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