NHIE Study Guide Questions with Correct Answers

NHIE Study Guide Questions with Correct Answers Connections of dissimilar metal in a plumbing system, such as galvanized steel pipe and copper pipe will usually cause - Answer-electrolysis An electrical system with a fuse on the neutral conductor and on the energized (hot) conductors - Answer-is hazardous and should be corrected Brick chimneys on older properties with oil heat sometimes curve above the roof line, with no visible cracks. What is a possible cause of this curving? - Answer-Expansion of mortar What has the least effect on the deflection of a dimension lumber floor system? - Answer- Joist width What protects the wires from an electrical overload? - Answer-Circuit breakers If a system designed for use with natural gas is supplied with propane gas - Answer-the flame will be too high unless a smaller orifice is installed What are usually designed for two-point bearing? - Answer-Roof trusses On a hillside house with foundation drain systems - Answer-the foundation drain systems collect water passing laterally through the slope EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 2/4 A subpanel in an older house that is wired with non-metallic sheathed cable (NM) has one circuit with a ground wire. The ground wire - Answer-Should be connected to a separate grounded buss bar When looking at the exterior wall of a sixty year old brick masonry house with a gable roof, you notice a horizontal crack in the mortar and outward brick displacement along the gutter edge of the roof. The displacement is greatest at the center of the top three courses of brick. This condition is MOST likely caused by - Answer-improper ceiling joist installation If a poured concrete foundation has an unusually large number of vertical cracks, each no wider than 1/32 inch, the cause is likely to be - Answer-shrinkage of the concrete from excess water at the time of pouring Where should squash blocks (web blocking) be found