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InterNACHI PRACTICE TEST QUESTIONS FULLY SOLVED & UPDATED
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InterNACHI PRACTICE TEST QUESTIONS FULLY SOLVED & UPDATED
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InterNACHI test with complete solutionsb. end 1 inch above the waste drain line - answer A condensate line should ______________.
a. empty directly into the waste drain line b. end 1 inch above the waste drain line c. not drain into the waste drain line d. extend at least 1 inch into the waste drain line
c. is more efficient than conventional furnaces and uses a
secondary heat exchanger - answer A condensing furnace _____________.
a. works like an air conditioner, except that it heats instead of cools b. is a furnace covered in condensation c. is more efficient than conventional furnaces and uses a
secondary heat exchanger a. 3 - answer A crawlspace should have one vent at least ______ feet from the corner.
a. 3 b. 2 c. 4 d. 1-1/2
a. effective resistance of the wire is increased, so the fuse
can no longer adequately protect the wire from overheating - answer A damaged or nicked wire is a safety hazard because the ___________________.
a. effective resistance of the wire is increased, so the fuse
can no longer adequately protect the wire from overheating b. damaged wire may corrode c. wire's effective diameter has been decreased, thereby decreasing the resistance of the wire
c. cornice - answer A dentil can be found on a _________.
a. dormer window b. widow's walk c. cornice d. turret e 3 - answer A drainpipe from a catch basin should be at least ____ inches in diameter.
a 5 b 4 c 2-1/2 d 3-1/2 e 3
a 17-1/2 - answer A dryer vent with a 45- and 90-degree elbow should have a maximum length of _____ feet.
a 17-1/2 b 16 c 14-1/2 d 10
c 24 - answer A firewall with a 1-hour rating has a _____-
inch minimum distance for metal electrical outlet boxes installed on opposite sides of the wall.
a 30 b 36 c 24 d 18 b 3 - answer A flex line connected to a gas heater may be _____ feet long.
a 6 b 3 c 9 d 12
a with a work space having a width of less than 30 inches
- answer A forced-air furnace ____________ describes an incorrect installation. a with a work space having a width of less than 30 inches
b having a combustion chamber situated 6 inches from a door c that is isolated from the bedroom or bathroom d with return-air grilles situated at least 10 feet from combustibles
b barometric damper - answer A forced-air heating system that is fueled by oil is evidenced by the presence of a ___________.
a pressure-temperature gauge b barometric damper c condensate line d sight glass
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