How is the airflow adjusted on most commercial air handlers? ...

[jman1234]

How is the airflow adjusted on most commercial air handlers?
 
  A) By adjusting the pitch of the blades on the blower wheel
  B) By increasing or decreasing the voltage to the fan motor
  C) By adjusting the sheave on an adjustable pulley
  D) By moving the speed tap on the blower motor

Question 2

One advantage of steam humidifiers is that:
 
  A) They do not have a water sump.
  B) They operate on 24 V.
  C) They provide the energy required to evaporate the water.
  D) They use less energy than evaporative humidifiers.

[trampas]

Answer to Question 1

C

Answer to Question 2

C

[jman1234]

Thanks for the timely response, appreciate it

[aliotak]

Gracias!