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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. A ____ which uses the vapor- compression refrigeration cycle in reverse mode.
Dampers
The amount of excess ventilation air
Residential commercial
Heat pump system is an HVAC system
2. A typical fan has three main parts: a ____ - ____ - and the ____.
Compressor condenser the expansion valve evaporator.
HVAC systems
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.
Dampers
3. The control system accomplishes its function through a system of ____ - ____ and ____.
Sensors - actuators - communication links.
Infiltration exfiltration
Save energy and reduce costs.
Heat pump system is an HVAC system
4. ____ 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.
Fan coil system
Dampers - grilles - filters - coils - fans - ductwork - control system.
Sensors - actuators - communication links.
HVAC systems
5. _____ or ____ generally involves air moving through openings.
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.
HVAC control system
Primary conversion units
Infiltration exfiltration
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
Dampers - grilles - filters - coils - fans - ductwork - control system.
High- pressure supply air
7. An ____ transforms the operating instructions for the desired environmental conditions into the air temperatures and ventilation volumes desired in the working environment.
Energy Efficiency Ratios or EERs - or their Seasonal Energy Efficiency Ratios or SEERs.
HVAC control system
Infiltration exfiltration
Save energy and reduce costs.
8. There are three types of mechanical compressors used in chillers.
Dampers - grilles - filters - coils - fans - ductwork - control system.
HVAC systems
Lighting
Small compressors Rotary screw compressors Centrifugal compressors
9. Thus - improving the operation of the HVAC system provides many opportunities to _____.
The need to use and control high- velocity airstreams.
Heat pump system is an HVAC system
Energy Efficiency Ratios or EERs - or their Seasonal Energy Efficiency Ratios or SEERs.
Save energy and reduce costs.
10. The efficiencies of air conditioners are usually measured in terms of their ____.
Small compressors Rotary screw compressors Centrifugal compressors
Energy Efficiency Ratios or EERs - or their Seasonal Energy Efficiency Ratios or SEERs.
HVAC system
Infiltration exfiltration
11. In these units - ____ flows through nozzles and induces additional room air flow into the unit.
High- pressure supply air
Sensors - actuators - communication links.
Typical water system
Evaporating 1 pound of water uses about 1040 Btu.
12. ____ are being used more now since ventilation standards have changed - and more outside air must now be brought into the facility.
Reheat system
Residential commercial
Compressor condenser the expansion valve evaporator.
Dampers
13. There are four main components in refrigeration unit using the vapor- compression cycle: the ____ - the ____ - the ____ and the ____.
Compressor condenser the expansion valve evaporator.
Dampers
Small compressors Rotary screw compressors Centrifugal compressors
Dual- duct system
14. ____ 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
Dampers - grilles - filters - coils - fans - ductwork - control system.
Primary conversion units
Small compressors Rotary screw compressors Centrifugal compressors
15. 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.
Save energy and reduce costs.
Typical water system
Infiltration exfiltration
Small compressors Rotary screw compressors Centrifugal compressors
16. Hot air - hot water - and steam are produced using furnaces or boilers which are called ____.
Energy Efficiency Ratios or EERs - or their Seasonal Energy Efficiency Ratios or SEERs.
Residential commercial
The need to use and control high- velocity airstreams.
Primary conversion units
17. 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.
Dual- duct system
The amount of excess ventilation air
HVAC systems
Reheat system
18. 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.
Dual- duct system
Energy Efficiency Ratios or EERs - or their Seasonal Energy Efficiency Ratios or SEERs.
HVAC system
High- pressure supply air
19. The HVAC system is responsible for a significant portion of the energy use and energy cost in most ____ and ____ buildings
Residential commercial
Infiltration exfiltration
HVAC systems
The need to use and control high- velocity airstreams.
20. Some of the disadvantages of this system include the complexity and difficulty of maintaining the controls - and _____.
Residential commercial
The need to use and control high- velocity airstreams.
Boiler furnace sun
HVAC control system
21. The exact amount depends on the HVAC system - but note that ____.
Evaporating 1 pound of water uses about 1040 Btu.
Typical water system
Infiltration exfiltration
The amount of excess ventilation air
22. The source of heat is usually a _____ - a ____ - or the ____.
Lighting
The amount of excess ventilation air
Reheat system
Boiler furnace sun
23. Heat generated from _____ is another example in which all of the energy used is generally converted to heat in the immediate space.
Reheat system
Primary conversion units
Lighting
Dampers
24. The ____ provides heat or cooling by using a fan to move room air across heating or cooling coils and back into the room.
Energy Efficiency Ratios or EERs - or their Seasonal Energy Efficiency Ratios or SEERs.
Evaporating 1 pound of water uses about 1040 Btu.
Fan coil system
Save energy and reduce costs.
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.
Evaporating 1 pound of water uses about 1040 Btu.
The need to use and control high- velocity airstreams.
Dual- duct system
High- pressure supply air