Gas Appliance Knowledge Quiz
Gas Appliance Knowledge Quiz
Test your knowledge of gas appliances with this comprehensive quiz! Perfect for professionals and enthusiasts alike, this quiz covers a wide range of topics related to gas systems, efficiency ratings, and safety regulations.
Prepare yourself for the challenge and see how well you understand:
- Types of gas burners
- Appliance efficiency standards
- Safety measures for installation
The internal characteristics of a gas appliance include types of burners, ignition systems, controls and safeties
True
False
High efficiency appliances use what type of gas burner?
Non mechanical
Mechanical
Atmospheric
Natural draft
What is the purpose of a pilot flame
To light the main burner
To heat the flame supervisor
To light the basement
To prime the flue
WHich of the following are common components of the main burner control circuit?
Thermostat
High limit
Main gas valve
All of the above
What is an example of a non vented gas appliance
Boiler
Furnace
Incinerator
Range
What type of appliance takes all of the air for the appliance directly from the outside and discharges all of the flue gas directly to the outdoors?
Indirect vent
Direct vent
Indirect flue
Direct flue
What is the purpose of a direct fire make up air unit?
Preheating of ventilation air
Space heating applications
Preheating of domestic water
Raising boiler efficiency
For every pound of water condensed from the flue gas, the heat exchanger of a condensing appliance gains approximately how many BTUs of heat energy?
144
324
970
1700
What section of the CSA b149 Code would you reference for general appliance installation requirements?
Section 4
Section 6
Section 7
Section 8
When a commercial cooking appliance is mounted on wheels, what other component is required?
Slide bollards
GPS tracking
Steering mechanism
Restraining device
Gas fired refrigerators operate differently from typical electric compression refrigeration units. What component does the gas fired refrigerator not require
Compressor
Condenser
Evaporator
Absorber
Gas clothes dryers require both a 110/120 VAC electrical outlet and a gas connection?
True
False
A recessed wall furnace uses what type of distinctive oval venting material
Type b
Type c
Type O
Type bw
What makes a gas fired room heater different from most space heaters?
Not self contained
No heat exhanger
No venting
No ducting
High intensity infared heaters have burners made of porous material that may reach surface temperatures up to ?
980 C
800 C
440 C
650 C
For gas fireplaces also known as vented gas fireplace heaters will have what minimum efficiency rating?
95 %
80 %
90 %
50 %
For gas fireplace applications that are not dependent on external electricity for their burner operation, what type of ignition system is best
Direct spark
Hot surface
Intermittent pilot
Dc electronic ignition
All newly installed 30-50 gallon residential gas water heaters with firing rates up to 75000 BTUs/hr must be equipped with what additional feature
PVR
PRV
FVIR
Drain pan
When a recirculation system is added to a tankless water heater what other system component is usually required
Small buffer tank
Pressure relief
Heat exchanger
Gas burner
What is the minimum efficiency required for all new gas furnaces installed in canada?
65 percent
78 percent
90 percent
95 percent
Who regulates the certification symbols that must appear on the rating plate of a gas appliance sold in canada
Technical safety BC
Standards council of canada
Canadian standard association
Underwriters laboratories of canada
A field approval label certifies an appliance for use at any location
Ture
False
What expression indicates a water heaters output?
AFUE
BTH/H
Recovery rate
Heating capacity
Steady state gives a true measurement of the systems seasonal efficiency because it accounts for the cycling or standby losses that take place over the course of the heating season
True
False
When equipment has more than one manual the installation manual will contain detailed installation and operating information and the owners manual will have only basic operating instructions, service, and maintenance information
Ture
False
Typically the servicing provider must dispose of all damaged parts replaced under warranty
True
False
What year did the CSA publish the very first edition of the B149.1 Gas code?
1942
1958
1969
2020
Which b149 code is specific to the storage and handling of propane?
B149.1
B149.2
B149.3
B149.4
Who is the independent self funded organization that oversees the safe installation and operation of technical systems and equipment across british columbia
CSA
CBC
TSSA
TSBC
At what point must you obtain a gas installation permit?
Before any work begins
After the rough in is complete
Before the first pressure test
At final completion
Gas directives and safety orders are mandatory and enforceable by technical safety BC
True
False
In reference to the B149.1 the term natural gas, is intended to apply to both natural gas and propane
True
False
In reference to the B149.1 which term indicates that a requirement is mandatory?
May
Might
Shall
Should
In reference to the b149/1 which section contains the information regarding reference publications that are cited in code?
Section 1
Section 2
Section 3
Section 4
Defined terms appear throughout the code as bold face italics text
True
False
When in doubt regarding a definition in the code who should be consulted for clarification?
The authority having jurisdiction
An online search
Popular opinion
A buddy
Unless otherwise approved by the authority having jurisdiction do the requirements of the b149 codes take precedence over those found in referenced standards or manufacturers instructions?
Yes
No
In reference to the b149.1 which section contains information regarding the appliance installer's responsibilities
Section 2
Section 3
Section 4
Section 6
Gas service piping from the main supply street main to the meter is normally whose responsibility
Any certified gasfitter
Homeowner
Gas utility
Builder
The manufacturers certified installation instructions contain the most accurate installation information for the appliance being installed
True
False
Which code sections contains requirements for the installation of gas pressure regulators?
Section 4
Section 5
Section 6
Section 7
What is the ignition temperature of natural gas?
900 C
700 C
495 C
480 C
Select the perfect combustion formula for natural gas.
CH4 + 2O2 + 8N2 -> CO2 + 2H2O + 8N2 + Heat
CH4 + 1O2 + 4N2 -> CO + H2O + H2 + 4N2 + Heat
C3H8 + 5O2 + 20N2 -> 3CO2 + 4H2O + 20N2
CH4 +2O2 + 8N2 + Excess air -> CO2 + 2H2O + 8N2 + Excess Air + Heat
At high temperatures nitrogen can bind to form what type of gases
C
H2
CO
NOX
For each unit of propane how many units of air are required for perfect combustion?
10
15
25
30
What is the primary purpose of excess air?
To increase efficiency
To increase premixing
To ensure complete combustion
To cool the flame and decrease NOX production
How many cubic feet of combustion air is required for every cubic foot of propane gas?
10 cubic feet (.28 m3)
16 cubic feet (.45 m3)
25 cubit feet (.71 m3)
32 cubic feet (.91 m3)
A volume of natural gas burned to created 2 million BTU/h of heat, the volume of carbon dioxide produced would be
2000 ft 3
4000 ft3
10000 ft3
20000 ft3
What do you call air that is premixed with the gas as it enters the burner?
Excess air
Dilution air
Primary air
Secondary air
A natural draft appliance has an input of 100,000 btu/h the appliance is designed to burn natural gas (CV 1000 BTU
500 Ft3
1000 ft3
1500 ft3
3000 ft3
The building envelope can and should completely separate the indoors from the outdoors
True
False
Cool air can contain more water vapour than warm air?
True
False
What term describes the process of air exiting a buliding?
Infiltration
Exfiltration
Stack effect
Distribution effect
What term describes the process of air entering a building
Infiltration
Exfiltration
Stack effect
Distribution effect
The combustion air supply openings required by CSA b149.1 code are designed to replace the air exhausted by mechanical exhaust devices as well as the air used by gas appliancesq
True
False
The combustion air supply openings required by CSA b149.1 code are designed to replace the air exhausted by mechanical exhaust devices as well as the air used by gas appliances
True
False
Pressure induced backdrafting is the reversal of the flow of flue gases out of the building caused by negative pressure in the building
True
False
What is the maximum house depressurization limit (HDL) that a natural draft vented appliance should be exposed to?
1 PA (.004"WC)
5 PA (.02" WC)
10 PA (.04"WC)
15 PA 9(06"WC)
1" HG equals how many inches of WC?
4.05" WC
14.73 WC
13.6" WC
27.68 WC
A gauge pressure of 400 KPA would equal what in absolute pressure
101.3 KPA
401.3 KPA
414.73 KPA
501.3 KPA
What is the name for the type of pressure reading in which the instrument registers the difference in pressure between two contained working fluids?
Gauge pressure
Absolute pressure
Differential pressure
Referenced pressure
Prio to storing an inclined manometer what must be done
Drain the flui
Close the shutoff valves
Joint the two hoses together to avoid spillage
Set the storage case on a level surface to avoid spillage
When using a water or gauge oil manometer the reading should be taken at the bottom of the U shaped meniscus
True
False
When filling inclinded vertical manometers with a zero adjustment knob turn the knob fully counter clockwise until it stops to center the adjustment and allow room for adjusting either side of zero after filling
True
False
One of the advantages of the magnehelic gauge is that it does not have to be used in the vertical poistion
True
False
When connecting a digital manometer you should zero the meter before connecting the hoses to the equipment pressure connections
True
False
LIquid glass thermometers with longer stem lengths will give more accurate readings
True
False
The redcoloured fluid found in some glass stem thermometers is mercury
True
False
What type of sensing elements do dial stem thermometers use?
A mercury buld
A bimetallic element
Gas filled sensing bulb
Thermistor
What is the advantage of mounting a thermometer probe in a thermowell
It electrically ground the sensor
It increases the accuracy to the sensor
It slows the sensor responsed to the process temperature change
The thermometer/sensor is easily changed without draining the piping or vessel
Dial thermometers have better accuracy and larger temperature range than digital thermometers
True
False
RTDS and thermistors are both which type of sensor
Bimetallic coil sensors
Capillary tube sensors
Variable millivolts sensors
Variable resistance sensor
What statement best describes a negative coefficient thermistor (NTC) ?
Resistance increases as temperature rises
Resistance decrease as temperature rises
As temperature rises an increased millivolt signal iscreated
As temperature rises the amount of thermal radiation emitted increases
What statement best describes a thermocouple?
Resistance increases as temperature rises
Resistance decreases as temperature rises
As temperature rises, an increased millivolt signal is created
As temperature rises the amount of thermal radiation emitted increases
What does the most common type of hand held non contact thermometer detect?
Gamma ray
Microwaves
Infared energy
Ultraviolet energy
Because the intensity of the light lasers used for heat guns is low, it is OK to stare at the beam
True
False
When using an IR thermometer with a 10:1 D:S if the size of the target is about 12" in diameter what is the maximum distance the measurement should be taken from ?
.83 feet
1.2 feet
10 feet
12 feet
The most common clamp-on ammeters are available for AC currents only
True
False
When using an inline ammeter to measure current in a circuit what must you ensure when connecting the multimeter
That the power is off in the circuit
That the multimeter is connected near the source
That the multimeter is connected in series with the circuit
That the multimeter is connected in parallel with the source or load
When testing for Ohms the power must be left on in the circuit
True
False
When testing a circuit for voltage how must the meter be connected?
In parallel with the circuit
In series with the circuit
To a de energized circuit
With both leads grounded
When testing for continuity in a circuit what must be ensured
That the circuit is powered
That the meter is grounded
That the source has a short circuit
That the circuit is de energized
Test leads must have a category rating that is equal to or less than the rating of the tester
True
False
An AC voltage waveform changes polarity constantly with time so it is not necessary to ensure correct polarity when connecting test leads
True
False
When using a clamp ammeter on a two wire circuit the two electromagnetic fields will cancel each other if the meter is clamped around both wires at once
True
False
The ohmeter is designed so that it will display 0 OM when the test leads are left open (zero external resistance)
True
False
{"name":"Gas Appliance Knowledge Quiz", "url":"https://www.quiz-maker.com/QPREVIEW","txt":"Test your knowledge of gas appliances with this comprehensive quiz! Perfect for professionals and enthusiasts alike, this quiz covers a wide range of topics related to gas systems, efficiency ratings, and safety regulations.Prepare yourself for the challenge and see how well you understand:Types of gas burnersAppliance efficiency standardsSafety measures for installation","img":"https:/images/course6.png"}