The advantage of a mechanical ventilation system is:
a. The system is self powered
b. The system supplies a controlled amount of filtered and heated air.
c. The entire system only requires one fan.
d. It stratifies the air, to help with filtration
e. There are no ducts required
Answer: B
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Power Engineering Chapter 102
- Mechanical filters can be divided into two broad classes:
- Natural ventilation is improved by the use of a roof
- Electronic air cleaners are divided into ____________ air cleaners.
- Which one of the following air cleaning devices can be used for the removal of gases and vapour?
- Actual ventilation rates may vary per person from:
- Which of the following Is not an airborne contaminant?
- In a mechanical air intake, natural exhaust ventilation system, the pressure in the building is:
- Ultraviolet light is used to remove _____ from the air.
- In the past the most popular method used to provide ventilation in a residence or small building has been by:
- Viscous filters are highly efficient in the removal of:
- Proper ventilation makes a building comfortable and habitable for its occupants. Which of the following is NOT a function of effective ventilation?
- Electrostatic filters are highly efficient in the removal of:
- One of the advantages of a common exhaust duct system used for ventilation in a large building is:
- Activated carbon will absorb odours and objectionable gases by up to _____ of its own weight before requiring replacement.
- The activated carbon used for absorbing odours can often be reactivated