Quiz
Gas Exam Prep 2
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Questions in this quiz (154)
1An automatic valve that has a closing time of less than 5 seconds upon being de energized
- AFast-acting valve
- BFast-closing valve
- CQuick Close Valve
- DSpeed Valve
2The term used to mean ‘acceptable to the authority having jurisdiction
- AApproved
- BAccepted
- CCorrect
- DApplicable
3In the absence of a readily accessible burner, purge in accordance with [blank_start]Annex H[blank_end]
- AAnnex H
- BAnnex A
- CAnnex B
- DAnnex G
4When the manufacturing instructions do not state the required clearances between combustible materials and the base of the factory built chimney, installer may refer to the
- ABuilding Code [OBC]
- BManufacturer Specifications
- COHSA
- DCSA
5Fire extinguishers need to be inspected monthly and once every
- AYear (1)
- B2 Years
- C6 Months
- D3 Years
6Fire extinguishers should be pointed at
- AThe Base of the flame
- BThe tips of the flame
- CInto the fumes
- DAt yourself
7The five (5) classes of fire extinguishers are A, B, C, D and K
- ATrue
- BFalse
8Lead shields are used to anchor fasteners to
- AConcrete
- BSteel
- CClay
- DCopper
9Prior to using a new appliance, technician should read the
- AUsers Manual
- BCSA Codebooks
- CThe Newspaper
- DFacebook page of the homeowner
10A hazard is the responsibility of
- AThe supervisor
- BThe business owner
- Cthe home owner
- Danyone who is aware of it
11Worker must work in compliance to acts/regulations; has the option to use/wear personal protective equipment and clothing as instructed by employer
- ATrue
- BFalse
12If a gas technician finds an unacceptable condition of a gas appliance NOT to be an immediate hazard, he/she must immediately give written notice to user and give written notice to gas distributor [utility] within 14 days of finding condition
- ATrue
- BFalse
13Material Safety Data Sheets [MSDS], purpose
- Ato make users aware of flammable, corrosive or explosive substances
- Bto clear companies of liability in event of injury
- Cto identify which colour chemicals are safe to drink
- Dto convince you that all chemicals are safe for all uses
14Calorific value of Natural Gas is
- A1200 btu/ft³
- B1000 btu/ft³
- C3000 btu/ft³
- D2000 btu/ft³
15Natural gas expansion factor is
- A600:1
- B270:1
- C300:1
- D150:1
16Propane calorific value is
- A3000btu/ft³
- B2000btu/ft³
- C2520btu/ft³
- D2200btu/ft³
17Propane gas expansion factor is
- A270:1
- B600:1
- C300:1
- D150:1
18An imperial gallon of propane weighs
- A5.1lbs
- B6lbs
- C2.5lbs
- D3lbs
19weight of the gas compared to the weight of an equal volume of air
- ASpecific gravity of gas
- BDensity of a gas
- CVolume of a gas
- DExpansion of a gas
20Natural gas limits of flammability
- A4-15%
- B10-18%
- C8-20%
- D2-10%
21mixed with fuel prior to ignition, 1/3 of theoretical amount
- APrimary air
- BCombustion air
- CSecondary air
- DExcess air
221ft³ natural gas requires [blank_start]10[blank_end] ft³ combustion air
- A10
- B20
- C15
- D8.2
231ft³ propane gas requires [blank_start]25[blank_end] ft³ combustion air
- A25
- B30
- C35
- D15
24Carbon Monoxide [CO] is the product of incomplete combustion; it is both toxic and combustible
- ATrue
- BFalse
25Natural draft [or gravity vent] relies on upward movement of hot gases [buoyancy effect]
- ATrue
- BFalse
26Fan that is downstream of combustion zone creates
- AInduced Draft
- BNatural Draft
- CForced Draft
- DChimney Draft
27The typical cause of orange flashing flame is
- Adust burning in flame
- Btoo much primary air
- Cnot enough primary air
- Dinsufficient draft pressure
28A burner that uses low gas manifold pressure [e.g. 3.5” w.c.] and atmospheric air pressure and has no mechanical means of supplying combustion air is called
- AAtmospheric Burner
- BForced Draft Burner
- CFan-assisted Burner
- DSemi-piloted Draft Burner
29A burner that creates sufficient air supply pressure to overcome the resistance of burner and appliance
- Aforced draft burner
- Bfan assisted burner
- CAtmospheric Burner
- DChimney burner
30A pilot flame that is supervised by a flame safeguard control that detects the presence of a flame before permitting the fuel valve to open is called a
- Aproved pilot
- Bintermittent pilot
- Cexpanding pilot
- Dinterrupted pilot
31A pilot that is lit manually and stays lit continuously
- Acontinuous pilot [standing pilot]
- BInterrupted pilot
- Cintermittent pilot
- DHSI
32A pilot that is same as continuous type except that its flame increases in size before main burner is lit; once main burner is proven, pilot flame reduces in size
- Acontinuous pilot
- Bexpanding pilot
- Cintermittent pilot
- Dinterrupted pilot
33if an overheating condition occurs, this component closes the gas valve
- AHigh limit switch
- BFlame roll-out switch
- CFlame Sensor
- DThermocouple
34flow of heat through a substance by transfer of heat from particle to particle
- AConduction
- BConvection
- CRadiation
35transfer of heat due to movement of the heated body [movement of fluids]
- AConduction
- BConvection
- CRadiation
36transfer of energy through space, even through a vacuum Two examples are: infrared and tube heaters, barbeques
- ARadiation
- BConvection
- CConduction
37Currently, all gas appliances installed in Canada must be tested and approved by
- ACSA
- BTSSA
- COntario Government
- DULC
38The authority of the Energy Act [natural gas and LP gas installations] is
- ACSA
- BULC
- COntario Government
- DTSSA
39"add water column of liquid displaced on pressure side to amount displaced on atmospheric side" these are instructions on how to read which measuring device
- AU-tube manometer
- BMultimeter
- CThermistor
- DUnitrol
40The minimum clearance between building opening [window, door …] and a propane or natural gas regulator discharge is [refer to code B149.1, clause 5.5.9]
- A1 ft
- B2 ft
- C3 ft
- D4 ft
41An appliance shall be installed with a minimum service clearance of: [blank_start]24[blank_end] inches to any side, top or bottom where service could be necessary 4.14.2
- A24
- B12
- C16
- D18
42As the wire AWG no. decreases the current rating decreases
- ATrue
- BFalse
43Current adds up in parallel circuits.
- ATrue
- BFalse
44Current is same throughout a series circuit [only one path]
- ATrue
- BFalse
45If current is 50 A and voltage is 120 V; power = [blank_start]6000[blank_end] Watts
- A6000
- B3000
- C1200
- D5000
46If a resistance is 20 Ω and current is 11 A; voltage = [blank_start]220[blank_end] V
- A220
- B120
- C240
- D150
47Current is [blank_start]higher[blank_end] in circuits with lower resistance.
- Ahigher
- Blower
- Cthe same
48A step-down transformer produces a [blank_start]lower[blank_end] supply voltage than source voltage
- Alower
- Bhigher
- Cidentical
49Voltmeter measures potential [in parallel] across a load or source
- ATrue
- BFalse
50Ohmmeter: measures [blank_start]resistance[blank_end]
- Aresistance
- Bvoltage
- Cwattage
- Damperage
51 an Ohmmeter must be zeroed before use and never used on a(n) [blank_start]energized circuit / live circuit[blank_end]
- Aenergized circuit / live circuit
- Bclosed circuit
- Copen circuit
- Dseries circuit
52Current will flow through a closed switch, in a circuit of continuous conducting material and electrical pressure
- ATrue
- BFalse
53Using an analogue ohmmeter, the reading across an open switch of a de-energized electrical circuit will be
- AO-L
- BApplied Voltage
- CInfinity
- D0 (Zero)
54Using a digital ohmmeter DMM, the reading across an open switch of a de-energized electrical circuit will be
- A0 (Zero)
- BO-L
- CInfinity
- DApplied Voltage
55Organization responsible for administering [dispensing, enforcing] fuel regulations for installation of gas and oil appliances in Ontario
- ACSA
- BTSSA
- COHSA
- DOntario Government
56The authority of The Energy Act as it applies to installation of natural gas and propane systems
- AOntario Government
- BCSA
- CTSSA
- DTTC
57Propane cylinders used in Ontario must be manufactured and approved to requirements established by
- ATransport Canada
- BOntario Government
- CCSA
- DTSSA
58Propane cylinders manufactured in Canada after 01 January 1993 to be built and marked as per the specifications of
- ATransport Canada
- BCSA
- CTSSA
- DOntario Government
59The organization that establishes procedures for the requalification of refillable propane cylinders used in Ontario
- ACGA
- BCSA
- CTSSA
- DOHSA
60install / service gas appliances with any input [vapour phase]
- AG.1 scope
- BG.2 scope
- CG.3 scope
61install / service gas appliances with inputs ≤ 400 000 Btuh [vapour phase]
- AG.2 scope
- BG.1 scope
- CG.3 scope
62may reactivate existing appliances up to 400 000 Btuh
- AG.3 scope
- BG.2 scope
- CG.1 scope
63Fittings used with steel pipe must be made of
- Amalleable iron or steel
- BPVC
- C636
- DCopper
64L or G [coated with polyethylene or PVC], or type K can be used for underground use
- ATrue
- BFalse
65Underground piping and tubing must be buried to a depth of: ≥ [blank_start]15[blank_end]” under lawn [or [blank_start]24[blank_end]” under commercial driveway]
- A15
- B20
- C23
- D18
- E24
- F16
- G22
- H19
66An individual shut-off valve shall not be required for each appliance in a recreational vehicle [B149.2; 11.6.14]; however, only one shut-off valve located at the tank is required if piping < 50 feet in length. [B149.1; 6.18.2(d)]
- ATrue
- BFalse
67 A branch outlet size must be
- Asame size as main supply piping if size of branch piping is not yet known
- BWhatever size pipe you have in your truck
- CType K copper pipe
- DPVC
68When pressure testing a residential natural gas piping system that is ≤ 200 ft long with a service pressure ≤ 2 psig service, it must be tested at [blank_start]15[blank_end] psig for 15 minutes
- A15
- B20
- C25
- D30
69Natural gas, dial test: shut off manual appliance valves, mark needle positions of the gas meter speed dial and test dial; if dials move, there is a leak [blank_start]downstream[blank_end] of the gas meter
- Adownstream
- Bupstream
- Cout
70Equipment service bulletins usually issued by
- Amanufacturer
- BOntario Government
- CCompressed Gas Association
- DCSA
71Safety directives and bulletins are issued by
- ATSSA
- BCSA
- CCGA
- DTransport Canada
72abnormal operation of equipment / device
- ASymptom
- BIssue
- CProblem
- DWorry
73a list indicating required installation materials
- ABill of materials
- BManufacturers Manual
- CName Plates
- DService Guides
74Determine cross-sectional area of 14” × 8” duct [in square feet, ft²]
- A0.778 ft²
- B0.877 ft²
- C1.787 ft²
- D0.9 ft²
75Determine the volume of a space measuring 22ft × 12ft × 8ft [in cubic, ft³]
- A2112 ft³
- B2101 ft³
- C3000 ft³
- D2000 ft³
76Shots for powder activated tools must be stored in
- Adry, secure location
- Bcardboard box
- Ccold damp location
- Din the upright position
77Materials that readily produce free electrons
- AConductors
- BInsulators
- CMetals
- DElectromagnets
78a transformer that uses one continuous winding to produce a different supply voltage than source voltage
- AAuto transformer
- BManual transformer
- COptimus Prime
- DMegatron
79hand-operated device used to connect / disconnect an appliance to gas supply; automatically shuts off gas supply when disconnected [def.]
- AQuick-disconnect device
- BRelease
- CValve
- DRelay
80a regulator located in the valve train of an appliance [def.]
- AAppliance regulator
- BDraft Diverter
- CAir Handler
- DPressure Switch
81A gas regulator that is downstream of a service regulator and upstream of an appliance regulator is called
- ALine Pressure Regulator
- BControl Regulator
- CPower Regulator
- DAutomatic Regulator
82a device designed to open to prevent a rise of gas pressure in excess of a specified value due to an emergency or abnormal conditions. [def.]
- ARelief device
- BDirt Pocket
- CPressure switch
- DUnitrol
83The boiling point of water
- A212°F
- B180°F
- C165°F
- D200°F
84One (1) metre =
- A150 cm
- B200 cm
- C500 cm
- D100 cm
85A normally closed valve that allows flow in only one direction
- ABack check valve
- BPressure Relief valve
- CClosed Nipple valve
- DStraight Turing valve
86Valve that limits fluid flow rate; actuated by Δp across the valve
- AExcess flow valve
- BBack check valve
- CPressure relief valve
- DCombination Valve
87Device installed between appliance and vent termination; provides mechanical draft
- APower Venter
- BDraft Diverter
- CDraft Regulator
- DVent Termination
88Prevents unsafe condition of temperature, pressure or liquid level
- ASafety limit control
- BRoll-out switch
- CThermistor
- DThermocouple
89Characteristics of CO is/are
- Atoxic and lighter than air
- Bcolourless and combustible
- Codourless and tasteless
- Dall choices listed
90The proper installation of an appliance is the responsibility of the installer[and not the TSSA, gas distributor, nor the B149.1 code]
- ATrue
- BFalse
91The largest propane cylinder manufactured is 420 lbs
- ATrue
- BFalse
92Carbon dioxide and nitrogen are combustible gases
- ATrue
- BFalse
93To purge a piping system supplying an appliance rated less than or equal to 400000 BTU/H, do so at the
- Amain burner
- Bcombustion chamber
- Creadily accessible burner such as at the top burner of a gas range
- Ddrip pocket
94Natural gas or LP gas piping less than or equal to 200 feet long, for system pressures greater than 2psig and less than or equal to 33 psig ...shall be pressure tested at ___________psig for __________minutes.
- A15 psig for 60 minutes
- B15 psig for15 minutes
- C50 psig for 60 minutes
- D5 psig for 30 minutes
95A pilot that burns without turndown whether the main burner is energized or not is a [blank_start]continuous[blank_end] pilot.
- Acontinuous
- Bexpanding
- Cintermittent
- Dinterrupted
96The method of heat transfer in a clothes dryer is
- Aconduction
- Bevaporation
- Cradiation
- Dconvection
97A14 AWG wire is rated at 15 amps
- ATrue
- BFalse
98A 10 AWG wire is rated at 20 amps
- ATrue
- BFalse
99A normally closed valve that allows flow in one direction is a backcheck valve
- ATrue
- BFalse
100Convection is the transfer of heat [blank_start]by the movement of fluids[blank_end]
- Aby the movement of fluids
- Bthrough evaporation
- Cby electromagnetic waves
- Dfrom particle to particle
101A device used to control and maintain conditions within acceptable limits, to ensure a constant outlet pressure is a [blank_start]pressure regulator[blank_end]
- Apressure regulator
- Bpressure transducer
- Cuniform pressure device
- Dpressure control
102The minimum diameter of underground piping is ½” NPS.
- ATrue
- BFalse
103Chemicals can enter the body by means of inhalation, skin contact, or ingestion
- ATrue
- BFalse
104A thermistor is a semiconductor device whose resistance varies with gas pressure.
- ATrue
- BFalse
105A device that is installed between the appliance and the vent termination and provides a mechanical draft is a [blank_start]power venter[blank_end]
- Apower venter
- Bvent exhauster
- Cmechanical inducer
- Dpower burner
106A control intended to prevent an unsafe condition of temperature, pressure or liquid level is referred to as a [blank_start]safety limit control[blank_end]
- Asafety limit control
- Brollout switch
- Cfan control
- Dhigh / low pressure switch
107The minimum depth of gas line must be buried under a lawn shall be twenty four[24] inches.
- ATrue
- BFalse
108Atmospheric burners are designed to operate under atmospheric pressure with low gas pressure.
- ATrue
- BFalse
109The likely cause of orange flashing in a flame is dust burning in the flame.
- ATrue
- BFalse
110To correct a symptom such as a fluctuating flame, a gas technician should first
- Acontact the equipment supplier
- Bconsult the manufacturer's instructions
- Cexchange the appliance and contact the manufacturer
- Dnotify the local utility or fuel supplier
111An orifice for a propane appliance with the same input as a natural gas appliance is smaller than the natural gas orifice.
- ATrue
- BFalse
112An indication of excessive primary air is a lifting flame.
- ATrue
- BFalse
113Temperature rise across a forced-warm air furnace is the difference between the supply air and flue gas.
- ATrue
- BFalse
114An appliance which incorporates a glow bar has a [blank_start]hot surface[blank_end] ignition system.
- Ahot surface
- Bspark
- Cmanual
- Dstanding
115If the gas / air velocity is too high at the port of a burner, the flame will tend to lift off the port.
- ATrue
- BFalse
116Spillage of flue gas at the appliance draft diverter is an indication of a restriction in the vent system
- ATrue
- BFalse
117A single insulated power tool does not require grounding
- ATrue
- BFalse
118If the heat anticipator of a thermostat is set too low the probable condition that would exist when the heating unit is energized is main burner ‘long cycling’
- ATrue
- BFalse
119The diameter of a drip or dirt pocket shall be equal to the diameter of the piping or tubing that it serves or 2inches, whichever is smaller
- ATrue
- BFalse
120The depth of a drip or dirt pocket must be a minimum of 3 inches or the diameter of the piping or tubing that it serves, whichever is larger
- ATrue
- BFalse
121Identify this component
- ALimit Switch
- BHSI
- CFlame Roll-Out Switch
- DPressure Switch
122Identify this component
- AHot Surface Ignitor
- BFlame Sensor
- CThermopile
- DPilotstat
123Identify this component
- ALimit Switch
- BRoll-Out Switch
- CPressure Switch
- DSolenoid
124Identify this component
- ARelay
- BHot Surface Ignitor
- CLimit Switch
- DFlame Roll-Out Switch
125Identify this component
- AInducer Fan
- BBlower Fan
- CManifold
- DHeat Exchanger
126Identify this component
- AHeat Exchanger
- BBlower Fan
- CInducer Fan
- DManifold
127The [blank_start]Province of Ontario[blank_end] regulates workplace safety.
- AProvince of Ontario
- BFederal Government
- CMinistry of Transportation
- DCGA
128The class of fire extinguisher used for wood fires is class:
- AA
- BB
- CC
- DK
129The class of fire extinguisher used for electrical fires is class:
- AA
- BB
- CC
- DK
130A carbide tipped bit is used to drill through
- Awood
- Bconcrete
- Csteel
- Dceramic
131To replace the existing fluid [gaseous or liquid] in piping, tubing, equipment, a container, or an appliance with a desired fluid.
- APurging
- BOff cycling
- CMetering
- DFlashing
132A person that is not a certificate holder may install or service a gas appliance in their dwelling which they own, but they should not activate it until an appropriate gas certificate holder confirms that the appliance complies with the codes, TSS Act and regulations.
- ATrue
- BFalse
133Neutral wires, ground wires and electrical panels must be properly connected to ground in order to comply with the Canadian Electrical Code
- ATrue
- BFalse
134There are no perfect electrical conductors or insulators.
- ATrue
- BFalse
135The applied voltage is equal to the voltage drop across each of the loads in a series circuit
- ATrue
- BFalse
136All installation codes are minimum requirements
- ATrue
- BFalse
137A natural gas purging outlet must be a minimum of [blank_start]10[blank_end] feet from a building air intake
- A10
- B3
- C6
- D15
138When dealing with a customer’s concern, one should:
- Abe sympathetic
- Btake notes
- Cexplain well in order to be understood
- Dall of the above
139Thermopiles/powerpiles are made of several thermocouples in [blank_start]series[blank_end]
- Aseries
- Bparallel
140a) a pipe branching into several openings [orifices]. b) main pipe or tube supplying gas [or other fluid] to two [2] or more branch lines
- AManifolded
- BBranch line
- CIndividual Service
- DDirt Pocket
141Potable
- Asafe to drink
- Bsafe to put into a pot
- CBoilable
- DSmellable
142A landed immigrant is allowed to work in Canada and possess a driver’s license as well as a gas technician license
- ATrue
- BFalse
143" is the imperial measurement symbol for
- Ainches
- Bfeet
- Cmeters
- Dyards
144’ is the imperial measurement symbol for
- Afeet
- Byards
- Cinches
- Dmeters
145The longest equivalent length for systems operating over two [2] PSIG is determined by adding the equivalent length in feet of straight pipe for each fitting, bend or valve to the shortest pipe run.
- ATrue
- BFalse
146At the heat exchanger in a forced air furnace, return air is heated
- ATrue
- BFalse
147A heat anticipator
- Ashuts the burner down if gas flow is lost
- Bshuts the burner down on over temperature
- Cacts as high limit backup
- Dcontrols the duration of the burner ‘on cycle’
148When purging a gas piping or tubing system to the outdoors the minimum distance required from a building or air intake is [blank_start]10[blank_end] feet
- A10
- B15
- C4
- D8
149Calculate the total current of the parallel circuit, Figure 1-P.
- A3.0 amps
- B30 amps
- C1.5 amps
- D0.3333 amps
150Calculate the total current of the series circuit, Figure 2-S.
- A12.0 amps
- B1.5 amps
- C20.0 amps
- D19.0 amps
151Calculate wattage of series circuit, Figure 2-S.
- A18.0 W
- B13.5 W
- C1.5 W
- D20.0 W
152The pipe diameter for pipe ‘A’ is ___________ NPS.
- A1⁄2”
- B3⁄4”
- C1”
- D1-1/4”
153The pipe diameter for pipe ‘B’ is ___________ NPS.
- A1⁄2”
- B3⁄4”
- C1”
- D1-1/4”
154The pipe diameter for pipe ‘C’ is ___________ NPS.
- A1⁄2”
- B3⁄4”
- C1”
- D1-1/4”
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- SEC I Technological Education Quiz on Gas Exam Prep 2, created by Benjamin Mair on 06/04/2021.
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- Benjamin Mair
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- English
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