Electrical Engineering Questions

"Shower base liners must be pitched ______________________ and shall be sloped toward the fixture drains and be securely fastened to the waste outlet at the seepage entrance, making a water-tight joint between the liner and the outlet. A. one-eight unit vertical in 12 units horizontal (1-percent slope) B. one-fourth unit vertical in 12 units horizontal (2-percent slope) C. one-half unit vertical in 12 units horizontal (4-percent slope) D. none of these!"

"In flushing devices for water closets and urinals, all flush tanks must be equipped with an antisiphon fill valve. The fill valve backflow preventer shall be located at least ______________ above the full opening of the overflow pipe. A. 1 inch (25 mm) B. 1 1/2 inch (38 mm) C. 2 inch (51 mm) D. 3 inch (76 mm)!"

"The code official, upon notification from the permit holder or the permit holder's agent, must make the following inspections and such other inspections as necessary, and shall either release that portion of the construction or shall notify the permit holder or an agent of any violations that must be corrected. A. underground inspection B. rough-in inspection C. final inspection D. all of the above E. none of the above!"

"A gas furnace requires 3,910 cubic ft of natural gas per hour, what is the minimum size of schedule 40 metallic pipe which could be used if the run length of the pipe is 175 feet and the inlet pressure is 2.0 psi? A. 1"" B. 1.25"" C. 1.5"" D. 2""!"

"Heat exchangers utilizing an essentially toxic transfer fluid must be separated from the potable water by ____________ construction. A. a nonpermiable membrane B. single-wall C. double-wall D. any of these!"

"A combination drain and vent system must not serve fixtures other than ______________. Combination drain and vent systems shall not receive the discharge from a food waste grinder or clinical sink. A. floor drains B. sinks and lavatories C. drinking fountains D. All of these!"

"Water from an individual water supply must be approved as potable by the authority having jurisdiction prior to __________________. A. issuing a permit B. application for a permit C. connection to the plumbing system D. none of these!"

"""The maximum allowable horizontal hanger spacing for copper or copper-alloy tubing, 11/4-inch diameter and smaller is __________ feet."" A. 3 B. 6 C. 9 D. 12!"

"Potable water service pipes must not be located____________ cesspools, septic tanks, septic tank drainage fields or seepage pits. A. within 10 feet of B. within 5 feet of C. in, under or above D. any of these!"

"All water service pipe or tubing, installed underground and outside of the structure, must have a minimum working pressure rating of _______________. Where the water pressure exceeds _______________, piping material shall have a minimum rated working pressure equal to the highest available pressure. A. 160 psi (1100 kPa) at 73.4ºF (23ºC), 160 psi (1100 kPa) B. 80 psi (550 kPa) at 73.4ºF (23ºC), 80 psi (550 kPa) C. 100 psi (690 kPa) at 73.4ºF (23ºC), 100 psi (690 kPa) D. 120 psi (828 kPa) at 73.4ºF (23ºC), 120 psi (828 kPa)!"

" Where the vent stack connects to the building drain, the connection must be located _______________ the drainage stack and within a distance of 10 times the diameter of the drainage stack. A. parallel to B. upstream of C. downstream of D. perpendicular to!"

"Over-rim bath fillers and other fixtures with effective openings not greater than 1 inch in diameter that are away from a wall require a minimum air gap distance in inches of ____________. A. 1 B. 1.5 C. 2 D. 3 E. Two times the diameter of the effective opening!"

"Every cleanout must be installed to open ___________ the drainage pipe or at right angles thereto. A. to allow cleaning in the direction of drainage flow of B. easily to get access to C. vertically D. horizontally!"

"On threaded joints, pipe-joint compound or tape shall be applied _______________. A. to both the male and female threads B. to all areas of the joint C. on the female threads only D. on the male threads only!"

" The installation of fuel gas distribution piping and equipment, fuel-gas-fired water heaters and water heater venting systems will be regulated by the ____________________________. A. International Plumbing Code B. International Fuel Gas Code C. International Energy Code D. any of the above!"

"Temperature and pressure relief valves, or combinations must have a temperature setting of not more than _____________ and a pressure setting not exceeding the tank or water heater manufacturer's rated working pressure or _____________, whichever is less. A. 210°F (99°C), 140 psi (966 kPa) B. 210°F (99°C), 150 psi (1035 kPa) C. 220°F (104°C), 180 psi (1242 kPa) D. 250°F (121°C), 160 psi (1104 kPa)!"

"Condensate piping used to drain liquid away from condensing appliances must maintain a minimum horizontal slope in the direction of discharge of not less than one-eighth unit vertical in _________________________________________________. A. 12 units horizontal (1-percent slope) B. 8 units horizontal (2-percent slope) C. 10 units horizontal (2-percent slope) D. none of these!"

"Ball valves, gate valves, globe valves and plug valves intended to supply drinking water shall meet the requirements of ________. A. NSF 61 B. NSF 11 C. NSF 73 D. ASTM A 733!"

"Where a smoke test is use to test a drainage system, when the smoke appears at stack openings on the roof, the stack openings must be closed and a pressure equivalent to a 1-inch water column (248.8 Pa) shall be held for a test period of not less than __________. A. 15 minutes B. 25 minutes C. 5 minutes D. 60 minutes!"

"Rigid support sway bracing must be provided at changes in direction greater than 45 degrees (0.79 rad) for _________________________________. A. pipe sizes 2 inches (51 mm) and larger. B. pipe sizes 3 inches (77 mm) and larger. C. pipe sizes 4 inches (102 mm) and larger. D. pipe sizes 6 inches (153 mm) and larger. E. all pipes!"