pressure system, the spool is __ ______ to move - answer✔✔Sliding ------ easy When air flowing in a pipe reaches a section where the diameter is reduced, the speed of the air _______ and its pressure _______ - answer✔✔Increases ------ Decreases The purpose of lubricating oil in a compressor are to reduce friction between the moving parts and to - answer✔✔Improve the cooling of the compressor The cracking pressure of a simple poppet -style relief valve is determined by the the - answer✔✔Spring adjustment The only purpose of a pressure -relief v alve is to - answer✔✔Protect the system from damage The thrust that can be applied when the rod end of a single -rod, double -acting pneumatic cylinder is moving out of the cylinder is______ the thrust that can be applied when the rod is moving into the cyli nder - answer✔✔Greater than Water often collects in a pneumatic system, because when air is compressed its _______ decreases - answer✔✔Moisture capacity Rotary -screw compressors run at speeds ranging from ______ to ______ rpm - answer✔✔3,000 -
-----12,000 When used as a compressor discharge line, a pipe run should slope _____ in the direction of the airflow by 1 in. for every ______ ft of pipe - answer✔✔Downward ------ 10 The horsepwer of a pneumatic motor varies with the ______ and the ______ of the motor shaf t - answer✔✔Speed ------ torque