Q. In an optimum four stage compressor system the first and third stage pressure are 1 kg/cm2 and 9 kg/cm2 respectively what will be the fourth stage delivery pressure? (Solved)
1. 81 kg/cm2
2. 27 kg/cm2
3. 9 kg/cm2
4. 6 kg/cm2
5. 3 kg/cm2
- a. 81 kg/cm2