@air
2025-04-15
What are the compression elements of piston air compressors?
- A. screw
- B. piston
- C. centrifugal wheel
- D. scroll
- Answer: B. piston
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@air
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The advantages of oil-injected air compressors do not include which of the following?
A. Lower cost B. Simple maintenance C. Compressed air pure D. Wide application range Answer: C analysis: The advantages of oil-injected air compressors include low cost, simple maintenance and wide application range, but the compressed air has a high oil content…
@air
2025-04-15
What are the main considerations in the selection of air compressor lubricating oil?
A. Price and brand B. Performance, price and brand C. Viscosity and quality of lubricating oil D. Production date and transportation method Answer: C. Viscosity and quality of lubricating oil
@air
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8. For every 50 meters increase in the pipeline, the pressure drop increases by about?
A. 0.05 bar B. 0.1 bar C. 0.2 bar D. 0.5 Bar Answer: B Analysis: The pressure drop per 50 meters of pipeline increases by 0.1 bar, and the flow loss is about 2%.
@ggao
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Question: Why is the GWL Series compressor favored by the chemical industry?
Answer: It can handle corrosive gases and provide reliable performance in harsh environments.
@air
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What are the main types of air compressors in the logistics industry?
A. Portable air compressor B. Industrial air compressor C. Medical air compressor D. Mine air compressor Answer: A. portable air compressor