WorksheetsQUIZ 1 PRAC - BLDG SYS
Total questions: 25
Worksheet time: 13mins
It is the measure of the ability of construction assembly of materials including air films
Thermal resistance
Total thermal resistance
Thermal conductivity
Thermal conductance
A system or process for simultaneously controlling the temperature, humidity, purity, distribution, and motion of the air in an interior space, esp. one capable of cooling.
Air Conditioning
Refrigeration
Cooling
None of the Above
An opening in which air is introduced into a space
Vane
Air outlet
Terminal box
Duct
This is used to direct the air stream from the main duct to a branch duct.
Splitter
Louver
Turning vane
Dumper
Which of the following HVAC design processes applies to one of the design alternatives, which has probably been chosen as the most promising combination of aesthetic, social, and technical solutions for the program?
Evaluation phase
Design finalizing phase
Preliminary design phase
Design development phase
Which HVAC system type eliminates the distribution trees of air and water, relying instead on a heat/cooling device adjacent to or within the space to be served?
Air and water
All water
All air
Direct refrigerant
Which of the fallowing HVAC design processes considers the most general combination of comfort needs and climate characteristics?
Prelimmary design phase
Design deveinement phase
Evaluation phase
Design finalization phase
It is the measure of the ability of a material to resist heat transfer.
Thermal conductance
Total thermal resistance
Thermal resistance
Thermal conductivity
These are used as channels to circulate air inside the building.
Duct
Chilled Water Supply and Return
Cooling/Heating Coils
Louvers
Mechanical systems manage power to accomplish tasks that involve ______
forces and movement
temperature and power
forces and heat
movement and heat
Which of the following is not a refrigerant?
CO2 (Carbon Dioxide)
R-11 (Trichloromonofluoromethane)
R 717 (Ammonia)
CFC (Chlorofluorocarbon)
When heat passes through materials in the building envelope and lost some of it, it is called: A transfer heat loss
transfer heat loss
transmission heat loss
heat resistance
thermal loss
HVAC Systems that have their mechanical equipment outside the room they are serving - it car be a mechanical room, on ledge outside the room, or on the roof.
Local
Standalone
Isolated
Central
Which of the following HVAC System equipment carries air to and from conditioned space and contains dampers to direct and modulate airflow?
Duct
Fan
Air grille
Heat exchange
What is the most efficient mode of heat transfer?
Conduction
Radiation
Forced convection
Natural convection
In air-conditioning, it is usually the ratio of the net equipment cooling capacity in BTU/HR to the total rate of electrical input in watts. What is that term?
IPLV (Integrated Part Load Value)
COP (Coefficient of Performance)
SEER (Seasonal Energy Efficiency Ratio)
AFUE (Annual Fuel Utilization Efficiency)
What is considered the critical decision in sizing the heating equipment?
Design temperature
Specification
Equipment capacity
Location
Split-type air conditioning is mainly composed of what two major components?
Air handling unit and Chillers
Fan coil unit and air-cooled condensing unit
Air-cooled water chiller and condensing coils
Evaporator and condenser
This type of fan uses a propeller to draw air into the fan and discharge it in the same axial direction. Air flow from entry to exit is predominantly parallel to the axis of rotation.
Axial-flow fan
Centrifugal fan
Exhaust fan
Pressurization fan
Which of the given HVAC components are valves that allow some or all the airflow through a duct to be cut off that can be manually operated by building occupants or automatically operated by centralized control systems?
Duct
Fan coils
Plenums
Dampers
Which type of air filter is most effective in removing fine particles like pollen and bacteria? An electrostatic filter
HEPA filter
Fiberglass filter
Carbon filter
Duct
A VRF (Variable Refrigerant Flow) system mainly provides:
Simultaneous heating and cooling in multiple zones
Humidity control only
Ventilation only
Central heating only
Which of the given HVAC systems is in one place that distributes the equipment's function to a specific floor or zone?
Specialized system
All-in system
Centralized system
Local system
What is the typical comfort zone temperature for indoor spaces according to ASHRAE?
10–12 °C
20–24 °C
15–18 °C
25–30 °C
Which of the following HVAC equipment includes condensers and evaporators in refrigeration equipment and water and steam coils in air handlers?
Heat exchange
Air grille
Fan
Duct
