Difficulty: Easy
Correct Answer: in a single cylinder on both sides of the piston
Explanation:
Introduction / Context:
Reciprocating compressors may be single-acting or double-acting. The distinction is whether one or both sides of the piston contribute to compression and delivery, which changes capacity and mechanical design details.
Given Data / Assumptions:
Concept / Approach:
In a double-acting machine, both the head end and the crank end of the same cylinder undertake compression alternately as the piston shuttles. This effectively doubles the number of compression events per revolution compared to a single-acting cylinder of the same size and speed.
Step-by-Step Solution:
Identify acting surfaces: two sides of the piston.Each stroke: one side compresses while the other side intakes or delivers.Therefore, compression occurs in a single cylinder on both sides of the piston.
Verification / Alternative check:
Indicator diagrams show two loops per revolution (one for each side) for a double-acting cylinder.
Why Other Options Are Wrong:
Common Pitfalls:
Assuming double-acting implies two cylinders; the term refers to two working faces of one piston.
Final Answer:
in a single cylinder on both sides of the piston
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