Environmental Control Systems MCQs
Environmental Control Systems MCQs
Try to answer these 100+ Environmental Control Systems MCQs and check your understanding of the Environmental Control Systems subject.
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1: What is the definition of microclimate?
A. A small climate
B. The average weather conditions in an area
C. Environmental conditions within a small area that differs significantly from the climate of the surrounding area
D. Study of the world's climate
2: What is solar angle?
A. The time of day when the Sun is highest in the sky
B. The angle at which light from the Sun strikes the surface of Earth
C. The name of a constellation
D. The temperature of the Sun's surface
3: What is the angle in the horizontal plane between the north-south line and the vertical plane called?
A. Right Ascension
B. Altitude
C. Azimuth
D. Declination
4: Relative humidity is defined as the percentage of water vapor in the air compared to what?
A. The maximum amount of water vapor that air can contain at a particular temperature
B. The minimum amount of water vapor that air can contain at a particular temperature
C. The average amount of water vapor in the air
D. The amount of water vapor needed to saturate the air
5: What is a psychometric chart?
A. A method of diagnosing mental illness
B. A type of therapy
C. A powerful graphic representation of temperature and relative humidity.
D. A device that measures psychological attributes
6: What is the dry bulb temperature?
A. The amount of heat needed to raise the temperature of one unit of dry air by one degree Celsius.
B. The air temperature measured by the dry-bulb thermometer of a psychrometer.
C. The air temperature measured by the wet-bulb thermometer of a psychrometer.
D. The maximum amount of heat that air can hold at a particular temperature.
7: Which of the following is true about the wet-bulb temperature?
A. The air temperature measured by the wet-bulb thermometer of a psychrometer.
B. It is apsychrometric measurement.
C. It is the humidity of the air.
D. It is the same as the air temperature.
8: What is the DewPoint?
A. The highest temperature at which dew can form.
B. The temperature at which water vapour in the air becomes saturated and condensation begins.
C. The lowest temperature at which dew can form.
D. A unit of measure for humidity.
9: What is Thermal Radiation?
A. The process of making something hot
B. The process of making something cold
C. Transfer of heat by the movement of molecules
D. Heat transfer in the form of electromagnetic waves, including light
10: What is heat?
A. A measure of the amount of work that can be done by a system
B. A state of matter
C. Energy that is transferred from one object to another
D. Energy that flows from a point at one temperature to another point at a lower temperature
11: What is Latent Heat?
A. The energy released or absorbed by a substance during a change of state that results in no change in temperature.
B. The energy required for phase changes
C. The energy released or absorbed by a system as the process of change occurs.
D. None of the above.
12: What is enthalpy?
A. The product of the sensible and latent heat of a substance
B. The sum of the sensible and latent heat of a substance
C. The sum of the solid and liquid heat of a substance
D. The difference between the sensible and latent heat of a substance
13: What is the process whereby molecular excitation spreads through a substance or from one substance to another by direct contact called?
A. Radiation
B. Absorption
C. Conduction
D. Convection
14: What is the definition of resistance?
A. The ability of a material to conduct electricity.
B. A material's opposition to the flow of electric current.
C. A material's opposition to the flow of electric charges.
D. The physical force that opposes the flow of electrons in an electric circuit.
15: What is a thermal bridge?
A. A device that is used to measure the thermal conductivity of a material
B. A material that has a low thermal conductivity and is used to insulate
C. A material that has a high thermal conductivity and is used to transfer heat
D. A thermally conductive material that bypasses an insulation system, such as a metal fastener or stud.
16: What is the capacity of a material to store heat called?
A. Fossil fuels
B. Electricity
C. Solar energy
D. Thermal Mass
17: What is the definition of ventilation?
A. The bringing in of fresh air to a building and the expelling of inside gasses.
B. The art of breathing
C. The study of air quality
D. The regulation of temperature
18: What is the process by which water on the ground surface enters the soil?
A. Condensation
B. Precipitation
C. Infiltration
D. Evaporation
19: What is the thermal load?
A. A unit of measurement for heat
B. A factor used in calculating heating load
C. The study of heat transfer
D. Heat transferred from walls, doors, ceilings, etc.
20: Heat loss occurs from a building through which of the following?
A. Convection, conduction, radiation
B. Advection, abrasion, attrition
C. Both of these
D. None of these
21: What is the opposite of Heat Gain?
A. Heat Receipt
B. Cooling
C. Heat Storage
D. Heat Loss
22: What is the sum of the accumulation of heat from all sources called?
A. Heat Gain
B. Heat Loss
C. Heat Transfer
D. Heat
23: What is the definition of a passive system?
A. A system that uses energy to create work
B. Utilizing natural phenomena to change the climate of a building.
C. A machine that produces energy
D. Something that protects you from the sun
24: What is the name given to the solar energy being introduced directly into the space through ordinary fenestration?
A. Direct Gain
B. Solar Energy Through Fenestration
C. Gain Through Fenestration
D. Indirect Gain
25: What is a roof pond?
A. A pond consisting of water contained within large plastic bags located on the roof of a building.
B. A large body of water
C. A small body of water
D. A type of construction material
26: What is HVAC?
A. Heating, Ventilation, Air Cooling
B. Heating, Ventilation and Air Conditioning
C. High Volume Air Conditioning
D. Heavy Ventilation and Air Conditioning
27: What is the central location of a building's HVAC system called?
A. Air handler
B. Plant
C. Central control unit
D. HVAC system
28: What is a boiler?
A. Equipment that provides hot water or steam for various uses (plumbing, heating, etc)
B. A device for cooking food
C. A device that generates electricity
D. A device used to measure pressure
29: What is the name of the process that transfers heat from one location to another?
A. Radiation
B. Boiling
C. Conduction
D. Vapor Compression Refrigeration Cycle
30: What is a heat exchanger?
A. A device that creates heat.
B. A device that transfers energy from one substance to another.
C. A device that transfers heat from one object to another.
D. A device that transfers heat from one substance to another.
31: What is the purpose of a Distribution System?
A. To clean the air
B. To regulate temperature
C. To recirculate treated air to the building
D. To provide fresh air
32: What is a hydronic system?
A. A system that uses electricity to transfer heat
B. A heating/cooling system that uses water to transfer heat
C. A system that uses solar panels to transfer heat
D. A dry cleaning system
33: What is a duct?
A. A tube or channel for conducting electricity.
B. A tube or channel for conducting food.
C. A tube or channel for conducting water.
D. A tube or channel for conducting air.
34: What does HVAC stand for?
A. High Volume Air Conditioning
B. Home Ventilation and Air Conditioning
C. Heating, Ventilating, and Air Conditioning
D. Hawaii Vacation and Air Conditioning
35: What is a delivery system?
A. A device that delivers water to a space.
B. A device that delivers heat or cooling to the conditioned space.
C. A device that delivers food to a space.
D. A device that delivers air to a space.
36: What is a Multi-Zone?
A. A country
B. A central air-handling unit capable of serving 8 zones simultaneously
C. A city
D. A type of building
37: What type of system is a Unitary System?
A. AHU and cooling compressor contained within a compact enclosure
B. A manufacturing company that produces only one product
C. A control system with one final control element per process variable
D. A company that organizes its work force into departments based on processes
38: What is the degree day?
A. The highest temperature
B. The lowest temperature.
C. The difference between the daily average temperature and a given temperature base.
D. The average temperature
39: How is Payback Period calculated?
A. By dividing expected yearly savings by the initial investment
B. By multiplying initial investment by expected yearly savings
C. By dividing initial investment by expected yearly savings
D. By taking the square root of the initial investment by expected yearly savings
40: What is the definition of Adaption?
A. Ability to adjust to various levels of light, see brightness of space in adaption level.
B. The act of modifying something to suit a particular purpose.
C. The process of acclimatization
D. The process of becoming accustomed to a new climate
41: What are brightness patterns?
A. Patterns of light and sound
B. Patterns of light and movement
C. Patterns of darkness and light
D. Patterns of light and shadow
42: What is brightness?
A. Percieved light amanting from an object
B. The feeling of happiness and positivity
C. A measure of how well light reflects off an object
D. The distance from which an object is seen
43: Which of the following is not a characteristic of a Fluorescent lamp?
A. Switching
B. Efficacy
C. Lamp Life
D. Lumen Maintenance
44: What is the purpose of task lighting?
A. To provide general lighting
B. To provide light in specific areas for decoration
C. To provide light in specific areas for tasks
D. To provide light in specific areas for safety
45: What is the ratio of interior illuminance to available outdoor illuminance called?
A. Available Outdoor Illuminance
B. Daylighting Factor
C. LED
D. Interior Illuminance
46: What is diffuse reflection?
A. Regular reflection of light
B. Reflection of light from a smooth surface
C. Mirrored reflection of light
D. Reflection of light from a rough surface in many directions
47: What is the main purpose of using direct concentrated down lights?
A. To reduce glare
B. For more energy-efficient lighting
C. For better lighting
D. For privacy and dramatic effect
48: What is the cause of Direct Glare?
A. Wind
B. Light sources
C. Objects in the way
D. The sun
49: What is the main characteristic of direct lighting?
A. High reflectance
B. High efficiency
C. Low energy
D. Adjustable
50: What is disability glare?
A. Something that impairs your vision if you have a disability
B. A type of specialneeds glasses
C. Luminance so intense that it impairs the vision.
D. When someone with a disability becomes angry
51: What is discomfort glare?
A. Eye fatigue from looking at a bright light
B. When an image is formed in the eye
C. When light is scattered in the eye
D. Immediate occurrence of light sources or luminance greater than what the eye can adapt to
52: What is the ratio of lumens provided to watts of heat produced by a light source?
A. Brightness
B. Ratio of light outputted to light inputted
C. Efficacy
D. The amount of light that is reflected off of a surface
53: What does "exposure time" mean?
A. Time it takes for eye to adjust
B. Length of time a person is exposed to a hazard
C. Amount of time a camera shutter is open to expose film
D. Time required to produce a desired effect
54: What is the biggest reason for eyestrain?
A. Staring at objects too close
B. Not blinking often enough
C. Too much caffeine
D. The demanding nature of specific tasks
55: General diffuse fixtures rely on what to distribute light?
A. Light absorbing into the fixture
B. Light reflecting onto the ceiling
C. Light reflecting onto the walls
D. Light reflecting onto the floor
56: What is the primary source of illumination for horizontal illuminance?
A. Reflective surfaces
B. Skylight
C. Adjacent ground
D. Soffit
57: What is an incident light ray?
A. A ray of light absorbed by a surface
B. A ray of light striking a surface
C. A ray of light reflected off a surface
D. A ray of light refracted through a surface
58: What is a lighting system?
A. A system that tells you when a light is out.
B. A system to turn lights on and off.
C. A machine that makes light
D. A combination of a particular lamp type and fixture type.
59: What is the purpose of Local and Supplementary lighting?
A. To provide an unrestricted area of relatively low intensity
B. To provide a restricted area of relatively low intensity
C. To provide an unrestricted area of relatively high intensity
D. To provide a restricted area of relatively high intensity
60: What is Lumen depreciation?
A. A lightbulb manufacturer
B. A device used to measure light
C. Luminous flux lost over time
D. A brand of LED light bulbs
61: What does lumen maintenance compare?
A. Amount of light produced from source brand new to amount at a specific time in future
B. Amount of light produced from source brand new to amount at a specific time in the past
C. Amount of light produced from source brand new to amount at a specific time in the present
D. Amount of light produced from two different sources brand new
62: What is the formula for determining the average maintained illuminance on working plane in a room?
A. Lumen Method Calculation
B. Brightness Method
C. Area Method
D. Spacing Method
63: What is Luminance?
A. The study of light
B. The art of making light
C. The intensity of light that arrives at the eye from a particular surface or area
D. The science of making lights
64: What is the percentage of energy end use for space heating?
A. 25%
B. 11%
C. 30%
D. 14%
65: What is the average of a number of intensity figures taken from several directions?
A. Luminous flux
B. Mean spherical candlepower
C. Lux
D. Lumens
66: What is the definition of "Reflected Glare?"
A. Reflection of luminance of a task area
B. A measure of the capacity of a lens to gather light
C. The addition of two or more electric fields
D. The angle between a line of sight and a line perpendicular to the surface
67: What is selective absorption?
A. The absorption of a material of only certain wavelengths
B. The reflection of all wavelengths
C. The absorption of no wavelengths
D. The absorption of all wavelengths
68: What is the definition of surface water sources?
A. All water found in glaciers
B. All water found in the oceans
C. All water found underground
D. All water open to the atmosphere and subject to surface runoff
69: What does ground water refer to?
A. All the water beneath the sea surface
B. All the water on the land surface
C. All the water beneath the land surface
D. All the water above the land surface
70: Which of the following is not a source of municipal wastewater?
A. Pre-treated industrial wastewater
B. Sewage
C. Groundwater infiltration
D. Wastewater from small industries
71: What are the three main water uses?
A. Swimming, drinking, cooking
B. Municipal, industrial, agricultural
C. Laundry, dishes, bathing
D. Cleaning, gardening, farming
72: When water is in the solid state, it is best known as _____.
A. Water vapor
B. Liquid
C. Steam
D. Ice
73: What are the 3 stages in the natural life cycle of water bodies?
A. Oligotrophic, mesotropic, eutrophic
B. Aqueous, gaseous, solid
C. Metamorphic, sedimentary, igneous
D. Blue, green, red
74: What is Trihalomethane?
A. A reaction between chlorine and organic matter.
B. A reaction between nitrogen and oxygen.
C. A colorless, odorless gas.
D. A reaction between chlorine and water.
75: What are three watershed characteristics?
A. Topography, vegetation cover, wildlife
B. Climate, landforms, waterfalls
C. Both of these
D. None of these
76: What affects subsurface geologic formation?
A. Surface water quality
B. Water quality
C. Groundwater quality
D. Both surface water and groundwater quality
77: What is turbidity?
A. A measure of the amount of light that is able to pass through water
B. A measure of the speed of water
C. A measure of the weight of water
D. A measure of the light that is either absorbed or scattered by particles in water
78: What does temperature affect?
A. The amount of light
B. The color of the water
C. Chemical and biological reaction rates, ecology of a water body and solubility of oxygen
D. The time of day
79: What is the pH range of natural water?
A. 9-14
B. 2-6
C. 6-9
D. 3-5
80: What is the definition of alkalinity?
A. The ability of water to dissolve alkalis
B. The ability of water to neutralize acids
C. The ability of water to create acids
D. The ability of water to neutralize bases
81: What is acidity?
A. Ability of a water to neutralize alkalis
B. Ability of a water to neutralize bases
C. A measure of the hydrogen ion concentration in water
D. A measure of the hydroxide ion concentration in water
82: What is the fourth type of nitrogen?
A. Nitrate
B. Organic Nitrogen
C. Ammonia
D. Nitrite
83: Nitrite is toxic to most fish at what concentration?
A. 0.1 mg/L
B. 0.01 mg/L
C. 0.001 mg/L
84: Maximum acceptable concentration of nitrite for drinking water is ____
A. 3.0 mg/L
B. 1.0 mg/L
C. 0.5 mg/L
D. 2.0 mg/L
85: Maximum acceptable concentration of nitrate for drinking water is ____
A. 3.0 mg/L
B. 10 mg/L
C. 0.5 mg/L
D. 2.0 mg/L
86: Nitrate is toxic to infants at ____ concentration
A. High
B. Low
C. Medium
D. No effect
87: Which of the following are major sources of nutrients?
A. Industrial effluents
B. Municipal wastewater
C. Agricultural runoff
D. All of these
88: What is a common chemical in industrial discharge?
A. Coal
B. Soil
C. Water
D. A known or suspected human health and/or environmental effect.
89: What is the amount of oxygen required for biological decomposition of organic matter?
A. Biochemical oxygen demand (BOD)
B. Soil
C. Water
D. Carbon dioxide
90: What is nitrification?
A. The biological reduction of nitrite with nitrogen into ammonia
B. The biological oxidation of ammonia with oxygen into nitrite, then nitrate
C. The biological reduction of nitrate with nitrogen into nitrite
D. The biological oxidation of nitrite with oxygen into nitrate
91: What is the amount of oxygen required to oxidize ammonia to nitrate?
A. Soluble BOD
B. Total BOD
C. Carbonaceous BOD
D. Nitrogenous BOD
92: What does TOC stand for?
A. Total carbon
B. Total organic carbon
C. Trace organic carbon
D. Total organic content
93: The 5 Kingdoms are Animal, Plates, Fungi, Protista, and _____.
A. Archaea
B. Viruses
C. Monera
D. Bacteria
94: What are indicator organisms?
A. Organisms that are used to create new medicines
B. A type of virus
C. Commonly used bacteria to determine the level of pollution in water
D. A disease
95: What is the DO model used for?
A. To establish environmental regulations
B. To determine the effects of water pollution on human health
C. To develop policies to protect the environment
D. To predict profile of DO concentration downstream from a waste discharge
96: What is the quality of matter?
A. The state of being physically or mentally sound and healthy.
B. An inherent characteristic that determines the usefulness of a material.
C. A measure of how useful a form of matter is to humans as a resource.
D. The degree to which a material resists deterioration.
97: What is the inner layer about 11 seal level called?
A. Stratosphere
B. Mesosphere
C. Thermosphere
D. Troposphere
98: What is the stratosphere?
A. A layer of Earth's atmosphere below the mesosphere
B. The study of Earth's atmosphere
C. A layer of Earth's atmosphere above the troposphere
D. A layer of Earth's atmosphere between the troposphere and the mesosphere
99: How high is the stratosphere from the sea level?
A. 11-30 km
B. 31-50 km
C. 5-10 km
D. 51-70 km
100: What is the hydrosphere?
A. The solid outer layer of the earth
B. The atmosphere
C. The molten outer layer of the earth
D. The water on and surrounding the earth
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Environmental Control Systems MCQs
Вопросы по системам экологического контроля на русском языке
Preguntas sobre Sistemas de Control Ambiental en español
環境制御システムに関する日本語の質問
Domande sui sistemi di controllo ambientale in lingua italiana
Questions sur les systèmes de contrôle environnemental en français
Questões de Sistemas de Controle Ambiental em Língua Portuguesa
Fragen zu Umweltkontrollsystemen in deutscher Sprache
中文环境控制系统问题
أسئلة نظم التحكم البيئي باللغات العربية
Soal Sistem Pengendalian Lingkungan dalam bahasa Indonesia
Türkçe dillerinde Çevresel Kontrol Sistemleri soruları
