NADCA NADCA-ASCS Online Practice Questions and Exam Preparation

NADCA NADCA-ASCS Online Questions & Answers

• Question 1:

  In which of the following scenarios might it be appropriate to apply an antimicrobial product?

  A. When treating wet contaminated fiberglass insulation within a duct
  B. To treat suspect microbial contaminants within a damp section of duct board
  C. Before cleaning an HVAC system contaminated with microbes
  D. After suspected mold growth has been removed from the blower housing
  C. Before cleaning an HVAC system contaminated with microbes

• Question 2:

  According to ACR, The NADCA Standard, coil cleaning should be performed:

  A. on the upstream side only.
  B. on both the upstream and downstream sides.
  C. on the downstream side only.
  D. when the system is running.
  B. on both the upstream and downstream sides.

• Question 3:

  According to ACR, The NADCA Standard, all portions of each coil assembly should be cleaned. In order to determine which type of cleaning is required, the ASCS should:

  A. access and inspect the upstream side of the coil.
  B. access and inspect the plenum upstream and downstream of the coil.
  C. access and inspect both upstream and downstream surfaces of the coil.
  D. perform pitot tube testing upstream and downstream of the coil.
  C. access and inspect both upstream and downstream surfaces of the coil.

• Question 4:

  Damage to the insulation inside an Air Handling Unit (AHU) can lead to:

  A. flooding of the secondary drain pan.
  B. unnecessary static pressure inside the VAVs.
  C. distribution of irritants inside the occupied space.
  D. the need for additional filters.
  C. distribution of irritants inside the occupied space.

• Question 5:

  A commercial Air Handling Unit (AHU) generally consists of:

  A. supply fan, coil, filters, and outlet and inlet dampers.
  B. exhaust fan, coil, filters, and outlet and inlet dampers.
  C. supply fan, coil filters, and humidifier.
  D. exhaust fan, coil, filters, and humidifier.
  C. supply fan, coil filters, and humidifier.

• Question 6:

  According to ACR, The NADCA Standard, which of the following is the PRIMARY purpose of a written work plan?

  A. Minimizes potential for legal action against the contractor
  B. Allows a clear understanding of what work will be performed
  C. Ensures compliance with current Occupational Safety and Health Administration (OSHA) regulations
  D. Documents the complete list of materials to be used on the job site
  B. Allows a clear understanding of what work will be performed

• Question 7:

  Which of the following components is MOST likely to contain microbial growth?

  A. Condensate drain line and drain pan
  B. Blower wheel housing and shaft
  C. Interior side walls of the HVAC unit
  D. Last set of turning vanes just before the air enters the HVAC unit
  A. Condensate drain line and drain pan

• Question 8:

  A magenta, or purple, color code on a respirator cartridge indicates which of the following types of filters?

  A. Carbon
  B. Organic
  C. HEPA
  D. Ultra Low Penetration Air (ULPA)
  C. HEPA

• Question 9:

  Vacuum collection equipment MUST be used to establish pressure differentials inside the portion of the HVAC system being serviced relative to:

  A. the static pressure.
  B. the surrounding area.
  C. the size of the ductwork.
  D. the outdoor pressure.
  B. the surrounding area.

• Question 10:

  A balometer (flow hood) is MOST frequently used by wh2024/8/1ich of the following trade persons?

  A. Architect
  B. Industrial hygienist
  C. Filtration specialist
  D. Test and balance specialist
  D. Test and balance specialist