NADCA NADCA-ASCS Online Practice Questions and Exam Preparation

NADCA NADCA-ASCS Online Questions & Answers

• Question 111:

  To prevent the introduction and distribution of chemicals and other contaminants into the ventilation system, the mechanical room should be:

  A. inspected every other month.
  B. included in the building's regular housekeeping program.
  C. kept clean and should not be used for storage.
  D. restricted for entrance except for maintenance personnel.
  C. kept clean and should not be used for storage.

• Question 112:

  Steam cleaning should never be applied to:

  A. evaporator coils.
  B. porous surfaces.
  C. non-porous surfaces.
  D. condensing coils.
  B. porous surfaces.

• Question 113:

  When is it appropriate to verify the effectiveness of HVAC system cleaning?

  A. During the cleaning process
  B. After the system is cleaned, and before the system is restarted
  C. After the system is restarted
  D. After the system is cleaned, but before coil cleaning is completed
  B. After the system is cleaned, and before the system is restarted

• Question 114:

  It is necessary for the site safety plan to include

  A. technician's job description.
  B. Safety Data Sheet (SDS)
  C. work order.
  D. C ACR.
  B. Safety Data Sheet (SDS)

• Question 115:

  According to ACR, The NADCA Standard, proper cleaning and maintenance of an HVAC system:

  A. eliminates odors.
  B. adds to the life expectancy of a system.
  C. reduces noise pollution.
  D. adds to the value of the HVAC system.
  B. adds to the life expectancy of a system.

• Question 116:

  What does ACR, The NADCA Standard recommend while cleaning internally-lined fiberglass ductwork, microbial contamination is observed within the fiberglass liner?

  A. Remove and replace the fiberglass liner
  B. Clean and sanitize the fiberglass liner
  C. Clean and coat the fiberglass liner
  D. Clean and disinfect the fiberglass liner
  A. Remove and replace the fiberglass liner

• Question 117:

  Dirt streaks around supply diffusers that are NOT caused by a dirty ventilation system are MOST likely caused by:

  A. Slow discharge velocities.
  B. elevated relative humidity.
  C. dirty room air at the diffuser.
  D. thermal stratification around the diffuser.
  D. thermal stratification around the diffuser.

• Question 118:

  Transite (asbestos) pipe is often found in which type of HVAC systems?

  A. Dual duct system
  B. Sub-slab system
  C. Constant volume system D. Variable air system
  C. Constant volume system D. Variable air system

• Question 119:

  In accordance with ACR, the NADCA Standard, an accurate indicator of the effect of the removal of debris from the evaporator coil is to measure

  A. pressure drop across the evaporator coil
  B. the length and thickness of the evaporator coil
  C. the velocity of return air prior to the filter.
  D. the velocity of supply air at the diffusers.
  A. pressure drop across the evaporator coil

• Question 120:

  What is the cleaning method that uses water and/or liquid chemicals?

  A. Surface process
  B. Type 1
  C. Condition 1
  D. Wet process
  D. Wet process