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Test your basic knowledge |
Heating Ventilating And Air Conditioning
Start Test
Study First
Subject
:
engineering
Instructions:
Answer 25 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The ____ provides heat or cooling by using a fan to move room air across heating or cooling coils and back into the room.
HVAC system
Heat pump system is an HVAC system
Fan coil system
Residential commercial
2. There are three types of mechanical compressors used in chillers.
Small compressors Rotary screw compressors Centrifugal compressors
A motor belts or a chain to transmit power from the motor to the fan blades (many small fans are direct drive) - blades with their housing.
Boiler furnace sun
Reheat system
3. In a ____ - hot or cold water is pumped through coils and heats or cools air that is drawn around the coil by natural convection or by fans.
Typical water system
Sensors - actuators - communication links.
Dual- duct system
The amount of excess ventilation air
4. Hot air - hot water - and steam are produced using furnaces or boilers which are called ____.
Primary conversion units
The amount of excess ventilation air
Reheat system
Small compressors Rotary screw compressors Centrifugal compressors
5. The source of heat is usually a _____ - a ____ - or the ____.
HVAC system
Compressor condenser the expansion valve evaporator.
Boiler furnace sun
Residential commercial
6. The typical components found in HVAC systems include ____ - ____ - ____ - ____ - ____ - ____ and a ____.
Energy Efficiency Ratios or EERs - or their Seasonal Energy Efficiency Ratios or SEERs.
HVAC systems
Evaporating 1 pound of water uses about 1040 Btu.
Dampers - grilles - filters - coils - fans - ductwork - control system.
7. ____ vary depending on the fluid that is used as a heat exchange medium (usually water or air) - on the particular requirements for the system - and on the type of system that was in style when the building was originally built.
HVAC systems
Boiler furnace sun
Dampers
Evaporating 1 pound of water uses about 1040 Btu.
8. The exact amount depends on the HVAC system - but note that ____.
Boiler furnace sun
Primary conversion units
Residential commercial
Evaporating 1 pound of water uses about 1040 Btu.
9. The control system accomplishes its function through a system of ____ - ____ and ____.
Fan coil system
HVAC systems
Energy Efficiency Ratios or EERs - or their Seasonal Energy Efficiency Ratios or SEERs.
Sensors - actuators - communication links.
10. ____ are usually used to regulate the flow of outside air into a system or to control the flow from one part of the system to another part - as in the case of a return air damper
Dampers
Residential commercial
Dual- duct system
HVAC systems
11. Some of the disadvantages of this system include the complexity and difficulty of maintaining the controls - and _____.
The need to use and control high- velocity airstreams.
Save energy and reduce costs.
A motor belts or a chain to transmit power from the motor to the fan blades (many small fans are direct drive) - blades with their housing.
Typical water system
12. Heat generated from _____ is another example in which all of the energy used is generally converted to heat in the immediate space.
HVAC system
Lighting
Infiltration exfiltration
Energy Efficiency Ratios or EERs - or their Seasonal Energy Efficiency Ratios or SEERs.
13. The HVAC system is responsible for a significant portion of the energy use and energy cost in most ____ and ____ buildings
Residential commercial
Save energy and reduce costs.
Dampers - grilles - filters - coils - fans - ductwork - control system.
High- pressure supply air
14. Thus - improving the operation of the HVAC system provides many opportunities to _____.
A motor belts or a chain to transmit power from the motor to the fan blades (many small fans are direct drive) - blades with their housing.
Save energy and reduce costs.
The amount of excess ventilation air
Small compressors Rotary screw compressors Centrifugal compressors
15. The purpose of the ____ is to add or remove heat and moisture and remove undesirable air components from the facility in order to maintain the desired environmental conditions for people - products or equipment.
Evaporating 1 pound of water uses about 1040 Btu.
Residential commercial
HVAC system
Heat pump system is an HVAC system
16. _____ or ____ generally involves air moving through openings.
Energy Efficiency Ratios or EERs - or their Seasonal Energy Efficiency Ratios or SEERs.
Infiltration exfiltration
Lighting
Fan coil system
17. A ____ which uses the vapor- compression refrigeration cycle in reverse mode.
Heat pump system is an HVAC system
HVAC systems
Dual- duct system
Save energy and reduce costs.
18. ____ are being used more now since ventilation standards have changed - and more outside air must now be brought into the facility.
Save energy and reduce costs.
Energy Efficiency Ratios or EERs - or their Seasonal Energy Efficiency Ratios or SEERs.
Reheat system
Boiler furnace sun
19. An ____ transforms the operating instructions for the desired environmental conditions into the air temperatures and ventilation volumes desired in the working environment.
Typical water system
Sensors - actuators - communication links.
The need to use and control high- velocity airstreams.
HVAC control system
20. The efficiencies of air conditioners are usually measured in terms of their ____.
Save energy and reduce costs.
Dampers
Energy Efficiency Ratios or EERs - or their Seasonal Energy Efficiency Ratios or SEERs.
Heat pump system is an HVAC system
21. There are four main components in refrigeration unit using the vapor- compression cycle: the ____ - the ____ - the ____ and the ____.
Fan coil system
High- pressure supply air
Residential commercial
Compressor condenser the expansion valve evaporator.
22. A typical fan has three main parts: a ____ - ____ - and the ____.
A motor belts or a chain to transmit power from the motor to the fan blades (many small fans are direct drive) - blades with their housing.
The amount of excess ventilation air
Residential commercial
HVAC system
23. In these units - ____ flows through nozzles and induces additional room air flow into the unit.
High- pressure supply air
Dampers - grilles - filters - coils - fans - ductwork - control system.
Dual- duct system
Infiltration exfiltration
24. Another method for saving energy is to reduce ____ to that required by the given environment; the cube law for fan horsepower can be used to estimate possible savings.
Compressor condenser the expansion valve evaporator.
The amount of excess ventilation air
Fan coil system
Sensors - actuators - communication links.
25. The ____ has the advantage that is can accommodate widely differing demands for heating and cooling in different zones of a building by changing the ratio of hot to cold air in each zone.
Energy Efficiency Ratios or EERs - or their Seasonal Energy Efficiency Ratios or SEERs.
Dual- duct system
Fan coil system
HVAC systems