OHST Practice Exam 2025 – The Comprehensive All-in-One Guide to Exam Success!

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Which of the following is NOT a disadvantage of fabric collectors?

Can be a fire or explosive hazard

Some fabric materials may be hard to clean

Does not work well with moist gas

Has very poor efficiency

The statement identifying that fabric collectors have very poor efficiency is not true when it comes to the overall comparison of dust collection systems. In fact, fabric collectors, also known as baghouses or fabric filters, are known for their high collection efficiency, often exceeding 99% for various particulate sizes. This makes them highly effective in controlling dust and particulate emissions, especially in industrial applications.

In contrast, the other options indicate legitimate disadvantages of fabric collectors: the risk of fire or explosion due to combustible dust, challenges in cleaning certain fabric materials which can impede maintenance, and the reduction in efficiency when dealing with moist gas, which can lead to issues like fabric saturation or clogging. Therefore, labeling poor efficiency as a disadvantage does not accurately reflect the strengths of fabric collectors in dust collection technologies.

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