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Mechanical Hvac practice test questions and answers
Mechanical Hvac practice test questions and answers 
 
A separate and distinct ventilation or exhaust system shall be provided for _____? (A)noxious gases (B) corrosive fumes (C)flammable vapors (D) incompatible materials. - correct answer-D. 505.1.2 In systems conveying flammable vapors, gases, or mists, the concentration shall not exceed 25 percent of the lower flammability limit (LFL). Exception: Higher concentrations shall be permitted if the exhaust system is designed and protected in accor...
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Mechanical Hvac practice test questions and answers 
 
A separate and distinct ventilation or exhaust system shall be provided for _____? (A)noxious gases (B) corrosive fumes (C)flammable vapors (D) incompatible materials. - correct answer-D. 505.1.2 In systems conveying flammable vapors, gases, or mists, the concentration shall not exceed 25 percent of the lower flammability limit (LFL). Exception: Higher concentrations shall be permitted if the exhaust system is designed and protected in accor...