Technician A says that shop air pressure usually ranges from 100-150 psi. Technician B says shop air pressure is around 300 psi. Who is correct?

technician A.

Explanation:

Commonly, air pressure rating of standard shop air compressor's is between the range of 100 psi and 150 psi. And over the years since, the plant pressure creep's up, the level of pressure increases from 100 psi to at max 150 psi but not more than that. Therefore, in the given question technician A is correct and technician B is incorrect.