Practice question An accumulator is used in systems with a: Belt-driven blowerThermostatic expansion valveFixed orifice tubeNo desiccant Answer: C — Fixed orifice tube The correct answer is shown above. Try the full quiz for additional practice. Practice more: ASE S7 Air Conditioning Systems & Controls (School Bus) Practice Questions - ASE S7 - Air Conditioning Systems & Controls (School Bus) Certification Exam →