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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: cp = 1.005 kJ/ kgK, cv = 0.718 kJ/kgK, R = 0.287 kJ/kgK. The maximum temperature (in K) of the cycle is ________(correct to one decimal place).
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- 1405
- 1503.98
- 1403.98
- 1403
Correct Option: C
P1 = 0.1 MPa
T1 = 35°C = 35 + 273 = 308 K 
Heat Supplied Qs = Cv (T3 – T2)
Cv (T3 – T2) = 500 kJ/kg ..............(i)
| Given, |  |  | γ - 1 | = | ||
| V1 | T2 |
| ⇒ | | | 1.4 - 1 | = | = 707.60K | ||
| 8 | T2 |
⇒ T2 = 707.60 K
After putting the value of T2 is equation(i):-
0.718 (T3 – 707.6) = 500
⇒ T3 = 1403.98 K
