GATE ME 2018 Set 1 — Question 56
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Thermodynamics → IC Engines → Otto, Diesel & Dual Cycles
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Question
An engine working on air standard Otto cycle is supplied with air at 0.1 MPa and 35°C. The compression ratio is 8. The heat supplied is 500 kJ/kg. Property data for air: kJ/kg K, kJ/kg K, kJ/kg K. The maximum temperature (in K) of the cycle is _________ (correct to one decimal place).
Correct answer
1402 to 1406
Solution
1.Given Data:
- Inlet pressure, MPa
- Inlet temperature, K
- Compression ratio,
- Heat supplied, kJ/kg
- kJ/kg K, kJ/kg K
3.Isentropic Compression (Process 1-2):
4.Constant Volume Heat Addition (Process 2-3):
The maximum temperature occurs at the end of the heat addition process ().Rounding to one decimal place, the maximum temperature is 1404.0 K.
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