What are two obvious advantages of general (dilution) ventilation systems?
a. Simplicity of design and high initial cost.
b. Low cost and exhaust of small volumes of heated air.
Simplicity of design and low initial cost.
d. Complex design that results in low running cost.
What do local exhaust systems usually contain or need?
a. More mechanical components than general ventilation systems.
b. More precise control of their operation.
d. All of the above.
List four basic considerations that should be kept in mind when applying local
exhaust ventilation to a specific problem.
What is/are the advantages of the local exhaust system?
a. Control of the contaminant is complete.
b. The worker is exposed to the contaminant.
d. a and c.