Chapter 102

Question 0

The air velocity through a viscous filter can be \_\_\_\_ higher than with dry filters.
A) 2.5 m/s (500 ft/min)
B) 4.0 m/s (800 ft/min)
C) 4.5 m/s (900 ft/min)
D) 7.5 m/s (1500 ft/min)

Answer 0

A) 2.5 m/s (500 ft/min)

Question 1

Living organisms that must be removed from the air are:
A) insects and pollen
B) bacteria and insects
C) bacteria and spores
D) pollen and spores

Answer 1

C) bacteria and spores

Question 2

The carbon in an odour adsorber may be reactive tend by heating it to \_\_\_\_\_ to drive out the adsorbed gases.
A) 250*C (480*F)
B) 538*C (1000*F)
C) 425*C (800*F)
D) 175*C (350*F)

Answer 2

B) 538C (1000F)

Question 3

The best filters available for ventilation system lint removal are:
A) charged media electronic
B) dry
C) viscous impingement
D) activated alumina chemisorbant

Answer 3

B) dry

Question 4

What precaution must be taken when using ultraviolet lights to sterilize air in ventilation systems?
A) correct supply voltage
B) safety glasses
C) sufficient number of units
D) position the lamps so UV Rays cannot strike occupants

Answer 4

D) position Lamps so UV Rays cannot strike occupants