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