GATE XE · 2026 · XE-E
Question 90: First Law of Thermodynamics
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Question 90
XE-EMCQ1 markNeeds review
In a mixing chamber hot water enters at a temperature of 80 °C with a flow rate of 0.5 kg/s. From another entry, cold water enters the chamber at 20 °C. The desired temperature after mixing at the exit of the chamber is 40 °C. There is no water leakage and the mixing happens at adiabatic conditions. Assume the specific heat capacity of water is 4.2 kJ/kg-K. For a steady state operation, the mass flow rate (in kg/s) of the cold-water stream is
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2026XE-E
GATE XE 2026 · Paper 1
Engineering Sciences · Original paper archive
- Section
- Section XE-E
- Question type
- Multiple choice (MCQ)
- Marks
- 1 mark
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