Answer :
Final answer:
The air compressor governor cuts in at the pressure of the air in the vessel, which is 130400 Pa or 140 PSI.
Explanation:
The air compressor governor cuts in at a specific level of pressure in order to regulate the operation of the air compressor. In this case, the question is asking at what pressure the governor cuts in. According to the provided information, the pressure at point D in the cycle is 130400 Pa, which corresponds to the pressure of the air in the vessel when the governor cuts in. Therefore, the correct answer is D) 140 PSI. This is the level PSI at which the air compressor governor cuts in.
