What type of compressor uses screws, pistons, sliding vanes, lobes, gears, or diaphragms to deliver a set volume of gas with each stroke?
A) Dynamic
B) Centrifugal
C) Axial
D) Positive-displacement

Question

Quizplus · Accepted Answer

A) Incorrect. A dynamic compressor is a continuous flow machine that uses speed (instead of pistons) to increase the pressure of gas at the discharge.
B) Incorrect. A centrifugal compressor is a dynamic compressor in which the gas flows from the inlet located near the suction eye to the outer tip of the impeller blade.
C) Incorrect. An axial compressor uses a series of rotor blades with a set of stator blades between each rotating wheel to move gases axially along the shaft.
D) Correct. Positive-displacement compressors use screws, pistons, sliding vanes, lobes, gears, or diaphragms to deliver a set volume of gas with each stroke.

What Type of Compressor Uses Screws, Pistons, Sliding Vanes, Lobes