National Home inspector exam Final Review Questions and Answers

National Home inspector exam Final Review Questions and Answer


1. At what level would water pressure within a single-
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family dwelling begin to be considered excessive and require correction: 80 PSI
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2. buckling in horizontal vinyl siding is generally caused by: improper fastening
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3. A newer home with electric heat is being inspected. It has a below grade finished ba
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sement containing a bedroom. The inspector should look for a smoke alarm and: an es
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4. A swimming pool fence must prevent passage of a sphere that is larger than: 4 inch
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es
5. If water infiltration is suspected behind a finished surface, what tool would be the best
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qchoice to verify dampness?: non-contact moisture meter
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6. Gas-fired furnace heat exchangers most often fail from: rust and metal fatigue
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7. relative humidity (RH) is expressed as: percentage
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8. Connections of dissimilar metal in a plumbing system, such as galvanized steel pipe a
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nd copper pipe, will usually cause: electrolysis
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9. A ground fault circuit interrupter (GFCI) is a safety device that: disconnects the power
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when sensing current leakage to ground
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10. An electrical system with a fuse on the neutral conductor and on the energized
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(hot) conductors: is hazardous and should be corrected
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11. To operate a central air conditioner, an electric clothes dryer, and and elec-
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qtric range, the ampacity of the service to the house should be AT LEAST: 100 amps at 240
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volts
12. A floor joist in a crawl space has been cut where the toilet drain passes through the
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floor. the joists are 2x6 spaced at 16" on center. The inspector should recommend that:
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a contractor be contacted to determine what is needed and make repairs
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13. Most problems with concrete are caused at the time of installation. What single fact
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or causes MOST problems: Too much water is added to the mix
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14. brick chimneys on older properties with oil heat sometimes curve above the roof lin
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e, with no visible cracks. What is a possible cause: expansion of mortar
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