North Carolina Contractors License Exams

North Carolina Heating Contractor, Group 3 (Class II)

Sample Questions for the North Carolina Heating Contractor, Group 3 (Class II) Exam

  1. In a heating and/or cooling system, what is the accessory used to supply and control the introduction of outside air and exhaust stale air?
    1. The humidistat
    2. The HEPA filter
    3. The energy recovery ventilator (ERV)
    4. The indoor air quality equalizer
  2. In a heating/cooling system, where should the filter be placed?
    1. Ahead of heating and cooling coils and other mechanical equipment
    2. Between the heating and cooling coils
    3. In the HVAC room next to the furnace
    4. On the side of the return air plenum
  3. When installing insulation in the interior of a duct, which of the following characteristics of insulation would be MOST effective in reducing sound transmission?
    1. Density
    2. Porosity
    3. Elasticity
    4. Ductility
  4. Straight line depreciation is computed by:
    1. dividing the value of the asset by the years in the recovery period, and claiming the same deduction every year
    2. depreciating the asset only to the extent that it is paid for; so if you finance the asset, you can claim a write-off only to the extent that you pay the bank
    3. taking the expense as a straight line-item write- off in the year purchased
    4. writing off the asset only over 35 years
  5. Financial standards are:
    1. The regulatory requirements for preparation of financial statements
    2. Developed internally as a method of measuring results
    3. The accepted arrangement of accounts on financial statements
    4. The rules and regulations accountants follow in auditing your books
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