Questions and Answers of Mechanical And Electrical Systems In Architecture Engineering And Construction

Identify three types of equipment that may require three-phase power.
Identify the type of cable permitted in direct-burial applications such as a feeder or branch circuit provided it is protected by an overcurrent protection device (fuse or circuit breaker) before if
Determine the ampacity of a No. 12 AWG copper conductor with THHN insulation that will be used in a 120 V, two-wire circuit in an environment with an average ambient air temperature of no greater
Determine the ampacity of a No. 14 AWG copper conductor with THHN insulation that will be used in a 120 V, two-wire circuit in an environment with an average ambient air temperature of no greater
Determine the ampacity of a No. 12 AWG copper conductor with THHN insulation that will be used in a 277 V, two-wire circuit in an environment with an average ambient air temperature of no greater
Determine the ampacity of a No. 4 AWG copper conductor with THHN insulation that will be used in a 120 V, two-wire circuit in an environment with an average ambient air temperature of no greater than
Determine the ampacity of a No. 1/0 AWG copper conductor with underground feeder (UF) insulation that will be used in a 120 V, two-wire circuit in an environment with an average ambient air
Determine the maximum one-way distance two conductors can carry a current of 20 A on a 120 V, single phase circuit based on a maximum voltage drop of 3%. Base your analysis on the following conductor
Determine the maximum distance two conductors can carry a current of 20 A on a 277 V, single-phase circuit based on a maximum voltage drop of 3%. Base your analysis on the following conductor
Design the electrical service entrance system for the residence in Appendix D. Base your analysis on:a. Water heater 3800 Wb. Clothes dryer 4400 Wc. Dishwasher 1000 Wd. Range 11 700 We. Air
A set of conductors will feed power to a well station with pump having a load of 30 A. The building is 150 ft from the 120 V power source. Determine the required wire size for copper and aluminum
A set of conductors will feed power to an outbuilding with equipment having a total load of 12 000 VA. The building is 200 ft from the 120 V power source. Determine the required wire size for copper
Determine the circuit rating for the following appliances or equipment on a 120/240 V circuit:a. Household rangeb. Trash compactorc. Household clothes washerd. Household clothes dryer (electric)e.
Design the electrical service entrance system for one of the apartments in Appendix A. Calculate the total load and service for the 38 ft × 28 ft (11.6 m × 8.55 m) apartment building. Base your
Determine the circuit rating for the following appliances or equipment on a 277 V circuit:a. Eight luminaires with 4-32 W fluorescent lamps per luminaire (138 W including ballast)b. Sixteen
A light source emits light with dominant wavelengths in the range of 650 to 690 nm. What is the principal color of light emitted by the source?
A light source emits light with dominant wavelengths in the range of 470 to 515 nm. What is the principal color of light emitted by the source?
A light source emits light with dominant wavelengths in the range of 589.0 to 589.6 nm. What is the principal color of light emitted by the source?
Noon sunlight strikes a stained glass window. After it passes through the glass, the transmitted light appears blue from the inside of the building.a. What size wavelengths of light are transmitted
Noon sunlight strikes a stained glass window. After it passes through the glass, the transmitted light appears red from the inside of the building.a. What size wavelengths of light are transmitted
Light from a chromatic light source strikes a surface. Twenty percent is reflected and 30% is absorbed.a. What percentage of the light incident on the surface is transmitted?b. What are the
Light from a chromatic light source strikes a surface. Ten percent of the light is absorbed and 40% is reflected.a. What percentage of the light incident on the surface is transmitted?b. What are the
Light from a chromatic light source strikes a surface. Seventy percent of the light is reflected and 30% is absorbed.a. What percentage of the light incident on the surface is transmitted?b. What are
Light from a chromatic light source strikes a surface. Seventy-three percent of the light is reflected and 27% is absorbed.a. What percentage of the light incident on the surface is transmitted?b.
Two coins are dropped on the sidewalk at night. One coin falls under a street lamp and the other coin falls a distance away from the lamp.a. What must happen for the coin that fell under the street
A 30 ft by 40 ft classroom with 8 ft high ceilings will have an ambient lighting target illuminance of 70 fc at a work plane that is 28 in above the floor. It is anticipated that the ceiling
Identify and describe the types of glazings used for daylighting.
Identify and describe the types of daylighting strategies.
A 30 ft by 40 ft classroom with 8 ft high ceilings will have an ambient lighting target illuminance of 70 fc at a work plane that is 28 in above the floor. It is anticipated that the ceiling
Determine the luminous efficacy of the following lamps:a. A 150 W incandescent lamp that emits 2850 lmb. A 34 W linear fluorescent lamp that consumes 36W, including the ballast and emits 3400 lm
A 14 ft by 18 ft kitchen with 8 ft high ceilings will have an ambient lighting target illuminance of 50 fc at cabinet countertops (the work plane) that are 36 in above the floor. It is anticipated
Determine the luminous efficacy of the following lamps:a. A 75 W incandescent lamp that emits 1170 lmb. A 40 W linear fluorescent lamp that consumes 44W, including the ballast and emits 3400 lmc. A
A 14 ft by 18 ft kitchen with 10 ft high ceilings will have an ambient lighting target illuminance of 50 fc at cabinet countertops (the work plane) that are 36 in above the floor. It is anticipated
Determine the luminous efficacy of the following lamps having comparable illumination outputs:a. A 300 W incandescent lamp that emits 5820 lmb. Two 32 W linear fluorescent lamps that emit 2950 lm per
A 100 ft by 200 ft warehouse with 18 ft high ceilings will have luminaires for ambient lighting hung 15.5 ft above the floor. It is anticipated that the ceiling reflectance is 0.70 and the average
A 160 ft by 200 ft practice space for a hockey team will have luminaires for ambient lighting hung 24 ft above ice level. It is anticipated that the ceiling reflectance is 0.80 and the average wall
Fixture manufacturer's data for a four-lamp linear fluorescent luminaire provides a luminaire efficiency of 0.62, a luminaire power input (watts) of 162 W, and ballast factor of 0.87 .Data from the
Fixture manufacturer's data for a two-lamp linear fluorescent luminaire provides a luminaire efficiency of 0.68, a luminaire power input (watts) of 70 W, and ballast factor of 0.95. Data from the
Lamp manufacturer's specifications for a 40 W fluorescent lamp indicate an output of 2680 lumens, a rated life of 20 000 Hr, and a cost of $5.20 per lamp. Data for a 150 W incandescent lamp indicates
You are considering replacing a 75 W incandescent lamp that costs $1.75/lamp with a compact fluorescent lamp. The incandescent lamp outputs 1190 lumens and has a rated life of 750 hr. It is
Assume that half of the light emitted by a 100 W incandescent lamp (1750 lumens) illuminates a 100 ft2 surface.a. Determine the average illuminance of the surface in foot-candles.b. Determine the
Assume that 40% of the light emitted by a 1000 W metal halide lamp (110 000 lumens) illuminates a surface with the area of a 32 ft diameter.a. Determine the average illuminance of the surface in
A 1000 candela light source emits a beam of light. Determine the luminous intensity, in foot-candles, on a surface held perpendicular to and in line with the light beam at distances in 1 ft intervals
A 1000 candela light source emits a beam of light. Determine the luminous intensity, in foot-candles, on a surface held perpendicular to and in line with the light beam at distances in 2 ft intervals
A 1000 candela light source emits a beam of light. The source is held exactly 4 ft above a moveable surface. The surface can be sloped at angles in 10° intervals in the range of 0° to 90°,
A 2000 candela light source emits a beam of light. The source is held 4 ft above the surface. The surface can be sloped at various angles. Determine the luminous intensity, in foot-candles, on the
Prismatic-wraparound, fluorescent luminaires have spacing coefficients of 1.6/1.2. They are mounted 8 ft above the floor. The work plane is 36 in from the floor. Determine the maximum
Parabolic-louvered fluorescent luminaires have spacing coefficients of 1.4/1.1. They are mounted 10 ft above the floor. The work plane is 28 in from the floor. Determine the maximum center-to-center
What are the four types of conventional automatic fire sprinkler systems and how do they function?
What are the four types of alternative fire suppression systems and how do they function?
What are the four classes of fire extinguishers and where are they used?
What types of electronic access control devices are used to provide building security?
What are passive fire protection and active fire protection? How are they different?
How are flame-spread ratings established?
What is a flame-spread rating?
Illumination of a 24 ft by 28 ft classroom requires 28 fluorescent luminaires containing two lamps (32 W per lamp) per light fixture. Assume each luminaire consumes 76 W, including the ballast. The
Describe the four classifications of fire by type of fuel.
Illumination of a 100 ft by 140 ft conference center lobby requires 40-400 W metal halide luminaires. Assume each luminaire consumes 435 W including the ballast. Determine the power density of this
Describe the five types of building construction.
What three elements must exist for a combustion reaction (fire) to occur?
How are fire-resistance ratings established?
Describe the four stages in the progression of a fire.
What is a fire-resistant rating?
Describe the difference between piloted ignition temperature and autoignition temperature.
What is an intumescent material? Where is it used?
What is compartmentalizing and why is it necessary in fighting a fire?
What is a standpipe system?
What is a smoke control system and why is it needed?
What is a smoke detector?
What is a heat detector?
Describe the types of heat and smoke detectors.
Describe a fire alarm control system.
Why has building security become increasingly important?
Identify and describe things that can be implemented in building design that improve security.
What types of electronic devices are used to provide building security?
What is a building emergency action (BEA) plan?
What is a building evacuation plan?
What are the roles of the members of the emergency management team?
What are the roles of the members of the incident response team?
What are the roles of the members of the building evacuation team?
A 184 ft by 242 ft room in a warehouse will be protected by individual fire sprinklers spaced throughout the ceiling. Each sprinkler head covers a 10 ft by 10 ft area and will discharge approximately
Draw a sketch of a fire sprinkler system for the residence in Appendix A.Appendix A N qo BEDROOM FFEUS BEDROOM DECK 80'-0" 76'-0" LIVING DINING an DINING 1-o' 6.0⁰ DN 21'-0" LIVING 8-0" 5-6
A 184 ft by 242 ft room in a warehouse will be protected by individual fire sprinklers spaced throughout the ceiling. Each sprinkler head covers a 12 ft by 12 ft area and will discharge approximately
Draw a sketch of a fire sprinkler system for the apartment building in Appendix B.Appendix B EAT BEDROOM BEDROOM EAT 0 52 0 LIVING BATH LIVING + NO 2 60 0 56:0" an LIVING BATH 0 0 BATH STORAGE
A 62 m by 80 m room in a warehouse will be protected by individual fire sprinklers spaced throughout the ceiling. Each sprinkler head covers a 4 m by 4 m area and will discharge approximately 180
Make a visit to a residence with a fire sprinkler system. Make a sketch of the system and identify chief components of the system. Write out control strategies used.
Make a visit to a commercial building with a fire sprinkler system. Make a sketch and describe chief components of the system. Describe control strategies used.
Make a visit to a high-rise (over 75 ft) office building with a fire sprinkler system. Make a sketch and describe chief components of the system. Describe control strategies used.
Visit a building manager and discuss the building's emergency action plan.
Describe the analog and digital transmission formats.
Sketch the three types of wiring topologies used in a telecommunications network.
Identify and describe the types of transmission media used in a telecommunications network.
Identify and describe the main subsystems of a structured cabling system for a building telecommunications network.
Describe UTP and STP wiring.
Describe the types of coaxial cable.
Describe the function of a fiber optic system.
Describe types of wireless communications used in buildings.
Describe the following components:a. Pathwayb. Drop cablesc. Patch paneld. Patch corde. Telecommunications outlet
How does electrical equipment (e.g., motors, generators, and so on) affect telecommunication signals?
How does fluorescent and HID lighting affect telecommunication signals?

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