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G3 |! exam |! prep |! questions |! with |!
precise |! answers
the |! tube |! inside |! a |! hot |! water |! tank |! that |! helps |! to |! prevent |! corrosion |! of |! the |! tank |! is |! called |! a: |! a) |! dip |! tube b) |! draft |! hood c) |! anode d) |! baffle |! - |! Correct |! answer |! ✔c) |! anode fall |! protection |! must |! be |! worn |! when |! a |! worker |! is |! exposed |! to |! a |! fall |! of |! more |! than: |! - |! Correct |! answer |! ✔ 10 |! feet MSDS |! stands |! for: |! - |! Correct |! answer |! ✔Material |! Safety |! Data |! Sheet a |! circuit |! that |! has |! infinite |! resistance |! is |! a |! ________ |! circuit: |! - |! Correct |! answer |! ✔open when |! there |! is |! a |! path |! for |! electric |! current |! to |! take |! between |! two |! points |! being |! tested, |! it |! is |! called: |! - |! Correct |! answer |! ✔continuity
the |! three |! components |! necessary |! to |! have |! an |! electrical |! circuit |! are: |! - |! Correct |! answer |! ✔power |! source, |! path, |! load what |! is |! the |! largest |! diameter |! of |! pipe |! for |! natural |! gas |! and |! propane |! that |! may |! be |! threaded? |! - |! Correct |! answer |! ✔2-1/2 |! inch |! (6.9.2) how |! often |! should |! 1 |! inch |! horizontal |! pipe |! be |! supported? |! - |! Correct |! answer |! ✔every |! 8 |! feet |! (table |! 6.2) what |! is |! the |! maximum |! allowable |! natural |! gas |! pressure |! inside |! an |! industrial |! building? |! - |! Correct |! answer |! ✔ 66 |! psig |! (table |! 5.1 |! pg. |! 54) Gasket |! materials |! used |! in |! gas |! pipe |! system |! shall |! be |! made |! of: |! - |! Correct |! answer |! ✔neoprene |! or |! similar |! material |! only |! (pg. |! 73) a |! leak |! test |! is |! performed: |! - |! Correct |! answer |! ✔immediately |! after |! turning |! on |! the |! gas |! with |! a |! dial |! test |! of |! a |! correct |! size |! pressure |! gauge |! for |! 10 |! minutes can |! underground |! piping |! or |! tubing |! pass |! below |! a |! foundation? |! - |! Correct |! answer |! ✔no to |! support |! horizontal |! piping, |! you |! would |! use |! a |! : |! - |! Correct |! answer |! ✔clevis |! hanger
how |! often |! must |! a |! gas |! fitter |! renew |! their |! certificate? |! - |! Correct |! answer |! ✔every |! second |! year |! on |! their |! birth |! date chemical |! formula |! for |! natural |! gas: |! - |! Correct |! answer |! ✔CH chemical |! formula |! for |! propane: |! - |! Correct |! answer |! ✔C3H how |! many |! cubic |! feet |! of |! air |! does |! it |! take |! to |! burn |! one |! cubic |! foot |! of |! propane |! gas? |! - |! Correct |! answer |! ✔23. how |! many |! cubic |! feet |! of |! air |! does |! it |! take |! to |! burn |! one |! cubic |! foot |! of |! natural |! gas? |! - |! Correct |! answer |! ✔ 10 what |! is |! the |! main |! purpose |! of |! having |! excess |! air |! with |! the |! combustion |! air |! requirements? |! - |! Correct |! answer |! ✔to |! promote |! a |! sharp |! blue |! bunsen |! flame |! on |! the |! main |! burner to |! raise |! efficiency |! of |! an |! appliance |! you |! would: |! - |! Correct |! answer |! ✔increase |! amount |! of |! excess |! air state |! the |! products |! of |! incomplete |! combustion: |! - |! Correct |! answer |! ✔CO,CO2,H2O,heat state |! the |! products |! of |! complete |! combustion: |! - |! Correct |! answer |! ✔H20, |! CO2, |! heat
a |! yellow |! flame |! off |! an |! appliance |! burner |! is |! called |! a: |! - |! Correct |! answer |! ✔luminous |! flame what |! is |! caused |! by |! not |! premixing |! air |! and |! fuel |! prior |! to |! combustion? |! - |! Correct |! answer |! ✔luminous |! flame what |! is |! a |! "dry |! gas"? |! - |! Correct |! answer |! ✔gas |! that |! has |! all |! or |! most |! of |! the |! heavier |! hydrocarbons |! removed natural |! gas |! is |! transported/transmitted |! in |! Canada |! mainly |! by: |! - |! Correct |! answer |! ✔the |! TransCanada |! Pipeline the |! maximum |! fill |! level |! of |! a |! cylinder |! is: |! - |! Correct |! answer |! ✔80% another |! word |! for |! impingement: |! - |! Correct |! answer |! ✔quenching what |! are |! the |! major |! purposes |! of |! a |! draft |! hood? |! - |! Correct |! answer |! ✔- |! ensure |! the |! ready |! escape |! of |! flue |! gases |! from |! the |! combustion |! chamber |! in |! the |! event |! of |! either |! no |! draft |! or |! stoppage |! downstream |! from |! the |! draft |! hood -prevent |! a |! backdraft |! from |! entering |! the |! combustion |! chamber |! of |! the |! appliance
- |! neutralize |! the |! effect |! of |! stack |! action |! of |! either |! a |! chimney |! or |! a |! vent |! upon |! the |! operation |! of |! the |! appliance
the |! max |! fail |! safe |! response |! time |! for |! a |! thermocouple |! type |! safe |! guard: |! - |! Correct |! answer |! ✔ 90 |! seconds a |! positive |! vent |! pressure |! condensing |! gas |! furnace |! would |! be |! category: |! - |! Correct |! answer |! ✔ 4 the |! room |! air |! entering |! the |! draft |! hood |! or |! diverter |! is |! called: a) |! supply |! air b) |! dilution |! air c) |! primary |! air d) |! return |! air |! - |! Correct |! answer |! ✔b) |! dilution |! air example |! of |! a |! nonvented |! appliance |! is: |! - |! Correct |! answer |! ✔domestic |! dryer maximum |! voltage |! allowed |! to |! be |! supplied |! to |! a |! gas |! valve |! and |! its |! components |! is: a) |! 24 |! volts b) |! 240 |! volts c) |! 120 |! volts d) |! 24 |! volts |! - |! Correct |! answer |! ✔c) |! 120 |! volts the |! device |! used |! on |! a |! digital |! thermostat |! to |! sense |! room |! temp |! is |! called |! a: a) |! thermostat b) |! spiral |! coil
c) |! thermistor d) |! a |! resistor |! - |! Correct |! answer |! ✔c) |! thermistor type |! C |! vent |! is: a) |! stainless |! steel |! vent b) |! single |! wall |! vent c) |! type |! BH |! vent d) |! double |! wall |! vent |! - |! Correct |! answer |! ✔b) |! single |! wall |! vent a |! furnace |! that |! has |! no |! fan |! and |! relies |! on |! convection |! to |! circulate |! air |! is |! called |! a: |! - |! Correct |! answer |! ✔gravity |! furnace boilers |! transfer |! heat |! through |! - |! Correct |! answer |! ✔conduction temperature |! rise |! in |! a |! forced |! warm |! air |! furnace |! is |! the |! difference |! between: a) |! the |! outdoor |! and |! return |! air |! temp b) |! the |! flue |! gas |! and |! supply |! air |! temp c) |! the |! supply |! and |! return |! air |! temp d) |! the |! outdoor |! and |! supply |! air |! temp |! - |! Correct |! answer |! ✔c) |! the |! supply |! and |! return |! air |! temperature a |! yellow |! flame |! on |! a |! burner |! indicates: a) |! not |! enough |! primary |! air
By |! definition,the |! specific |! gravity |! of |! a |! gas |! (vapour) |! is |! the: A) |! weight |! of |! the |! gas |! as |! compared |! to |! the |! weight |! of |! air B) |! weight |! of |! the |! gas |! as |! compared |! to |! the |! weight |! of |! an |! equal |! volume |! of |! air C) |! volume |! of |! gas |! compared |! to |! the |! weight |! of |! an |! equal |! volume |! of |! air D) |! volume |! of |! gas |! as |! compared |! to |! the |! weight |! of |! air. |! - |! Correct |! answer |! ✔B) |! weight |! of |! the |! gas |! as |! compared |! to |! the |! weight |! of |! an |! equal |! volume |! of |! air Air |! that |! is |! mixed |! with |! fuel |! prior |! to |! ignition |! is |! called: A) |! primary |! air B) |! secondary |! air C) |! excess |! air D) |! theoretical |! air |! - |! Correct |! answer |! ✔A) |! primary |! air Reading |! of |! 7.0" |! w.c |! equals: A) |! 1/4 |! psig. |! (1.72kPal) B) |! ½ |! psig. |! (3.45 |! kPa) C) |! 3/4 |! psig.(5.17kPa) D) |! 1 |! psig. |! (6.9kPa) |! - |! Correct |! answer |! ✔A) |! 1/4 |! psig. |! (1.72kPal) An |! appliance |! shall |! be |! installed |! with |! a |! minimum |! service |! clearance |! of: A) |! 12 |! inches |! (0.3 |! m) B) |! 24 |! inches |! (0.6 |! m) C) |! 36 |! inches |! (1 |! m)
D) |! 48 |! inches |! (1.2 |! m) |! - |! Correct |! answer |! ✔B) |! 24 |! inches |! (0.6 |! m) |! (4.14.2) In |! cases |! at |! threat |! to |! public |! safety |! a |! director |! may |! make |! orders: A) |! as |! he |! sees |! fit B) |! that |! contravene |! the |! provisions |! of |! the |! Act C) |! related |! to |! matters |! that |! have |! not |! been |! provided |! in |! the |! act D) |! in |! languages |! other |! than |! English |! - |! Correct |! answer |! ✔C) |! related |! to |! matters |! that |! have |! not |! been |! provided |! in |! the |! act Which |! type |! of |! draft |! is |! produced |! by |! a |! device |! upstream |! of |! the |! combustion |! zone |! of |! an |! appliance: A) |! pre |! draft B) |! forced |! draft C) |! induced |! draft D) |! atmospheric |! draft |! - |! Correct |! answer |! ✔B) |! forced |! draft |! (definitions) What |! is |! the |! term |! for |! a |! device |! used |! to |! control |! and |! maintain |! within |! acceptable |! limits, |! a |! uniform |! outlet |! pressure: A) |! pressure |! control B) |! pressure |! transducer C) |! pressure |! regulator D) |! uniform |! pressure |! device |! - |! Correct |! answer |! ✔C) |! pressure |! regulator A |! notice |! of |! proposal |! to |! deny |! an |! authorization |! will |! inform |! the |! person |! of:
A) |! order |! an |! appropriate |! investigation B) |! supply |! medical |! assistance |! for |! all |! injuries C) |! prepare |! a |! cost |! estimate |! for |! the |! damages D) |! check |! the |! victims |! drivers |! license |! and |! proof |! of |! insurance. |! - |! Correct |! answer |! ✔A) |! order |! an |! appropriate |! investigation Which |! of |! the |! following |! burners |! is |! NOT |! equipped |! with |! a |! mechanical |! device |! for |! supplying |! combustion |! air: A) |! natural |! draft |! burner B) |! combustion |! burner C) |! power |! burner D) |! non-mechanical |! burner |! - |! Correct |! answer |! ✔A) |! natural |! draft |! burner Which |! term |! is |! used |! to |! describe |! a |! stationary |! device |! used |! to |! divert |! the |! flow |! of |! flue |! gases: A) |! baffle B) |! gas |! burner C) |! automatic |! vent |! damper D)air |! shutter |! - |! Correct |! answer |! ✔A) |! baffle Which |! burner |! supplies |! combustion |! air |! at |! sufficient |! pressure |! to |! overcome |! the |! resistance |! of |! the |! burner |! only: A) |! power |! burner B) |! combustion |! burner
C) |! forced |! draft |! burner D) |! fan |! assisted |! burner |! - |! Correct |! answer |! ✔D) |! fan |! assisted |! burner |! (definitions) The |! maximum |! fine |! for |! an |! individual |! found |! guilty |! under |! the |! technical |! standards |! and |! safety |! act |! is: A) |! $100. B) |! $25,000. C) |! one |! year |! in |! jail D) |! $50,000 |! and/or |! one |! year |! in |! jail |! - |! Correct |! answer |! ✔D) |! $50,000 |! and/or |! one |! year |! in |! jail
- |! When |! an |! appliance |! is |! installed |! on |! a |! roof, |! the |! minimum |! clearance |! between |! the |! appliance |! and |! the |! edge |! of |! the |! roof |! shall |! be: A) |! 4 |! feet |! (103m) B) |! 6 |! feel |! (2.0m) C) |! 8 |! feel |! (25m) D) |! l0 |! feet |! (3.0m) |! - |! Correct |! answer |! ✔B) |! 6 |! feet |! (4.14.6) Where |! premises |! are |! connected |! to |! a |! supply |! of |! gas |! for |! the |! first |! time, |! no |! person |! shall |! initially |! activate |! an |! appliance |! until: A) |! the |! fuel |! distributor |! has |! been |! notified B) |! the |! fuel |! distributor |! has |! examined |! and |! accepted |! the |! installation C) |! the |! owner |! has |! examined |! and |! accepted |! the |! installation
Transformers |! which |! produce |! a |! secondary |! voltage |! which |! is |! higher |! than |! the |! primary |! said |! to |! be: A) |! step |! down |! transformers B) |! step |! up |! transformers C) |! auto |! transformers D) |! neutral |! transformers |! - |! Correct |! answer |! ✔B) |! step |! up |! transformers If |! the |! scale |! on |! a |! mechanical |! drawing |! is |! 1/8"- |! 1'0" |! then |! a |! line |! measuring |! 4" |! in |! a |! length |! is |! actually: A) |! 32 |! inches B) |! 4 |! feet C) |! 8 |! feet D) |! 32 |! feet |! - |! Correct |! answer |! ✔D) |! 32 |! feet Equipment |! wiring |! diagrams |! indicate |! which |! of |! the |! following? A) |! supply |! voltage,wire |! size |! from |! panel,fuse |! size,internal |! wiring B) |! supply |! voltage, |! internal |! wiring, |! location |! of |! controls, |! field |! wiring C) |! supply |! voltage, |! fuse |! size |! ,type |! of |! disconnect |! switch, |! factory |! wiring D) |! supply |! voltage, |! size |! of |! control |! wiring, |! location |! of |! gas |! valve, |! factory |! wiring |! - |! Correct |! answer |! ✔B) |! supply |! voltage, |! internal |! wiring, |! location |! of |! controls, |! field |! wiring Mechanical |! drawings |! are |! used |! to: A) |! give |! the |! building |! address, |! show |! the |! equipment |! location, |! piping |! layout, |! duct |! sizing |! and |! duct |! layout
B) |! give |! the |! building |! address, |! locate |! the |! building |! on |! the |! site, |! location |! of |! adjacent |! structures, |! piping |! layout, |! and |! show |! equipment |! location C) |! give |! the |! building |! address, |! indicate |! the |! building |! size, |! show |! its |! elevations, |! list |! the |! mechanical |! equipment, |! and |! show |! it's |! location, |! show |! all |! permits D) |! give |! the |! building |! address, |! show |! the |! owner's |! name, |! installers |! name, |! permit |! numbers, |! the |! equipment |! list |! and |! the |! warranty |! - |! Correct |! answer |! ✔A) |! give |! the |! building |! address, |! show |! the |! equipment |! location, |! piping |! layout, |! duct |! sizing |! and |! duct |! layout
. |! Safety |! directives |! and |! bulletins |! are |! issued |! by |! the: A) |! local |! utility |! or |! fuel |! supplier B) |! manufacturer C) |! technical |! standards |! and |! safety |! authority D) |! ULC |! - |! Correct |! answer |! ✔C) |! technical |! standards |! and |! safety |! authority Equipment |! service |! bulletins |! are |! normally |! issued |! by |! the: A) |! local |! utility |! or |! fuel |! supplier B) |! manufacturer C) |! technical |! standards |! and |! safety |! authority D) |! canadian |! standards |! association |! - |! Correct |! answer |! ✔B) |! manufacturer On |! a |! roof |! with |! a |! 12/12 |! pitch |! and |! no |! obstructions, |! the |! minimum |! vent |! height |! for |! natural |! gas |! fired |! appliance |! is |! : A) |! 2 |! feet B) |! 4 |! feet
A) |! no B) |! yes C) |! only |! where |! the |! branch |! supply |! line |! size |! is |! larger |! than |! NPS |! 2 |! ½ D) |! only |! where |! the |! branch |! supply |! line |! will |! be |! operating |! at |! a |! pressure |! in |! excess |! of |! 0.5 |! psig |! (3.5 |! kPa) |! - |! Correct |! answer |! ✔b) |! yes The |! diameter |! of |! a |! drip |! or |! dirt |! pocket |! shall |! be |! equal |! to |! the |! diameter |! of |! the |! piping |! or |! tubing |! that |! it |! serves, |! or: A) |! 1 |! inch |! (25mm) B) |! 2 |! inches |! (50 |! mm) C) |! 3inches |! (7Smm) D) |! 4 |! inches |! (100mm) |! - |! Correct |! answer |! ✔B) |! 2 |! inches |! (50mm) A |! noisy,lifting,blowing |! pilot |! flame |! is |! usually |! the |! result |! of: A) |! the |! recirculation |! of |! combustion |! products B) |! excessive |! gas |! to |! the |! main |! burner C) |! a |! high |! percentage |! of |! H20 |! in |! the |! flue |! gases D) |! excessively |! high |! pilot |! gas |! pressure |! - |! Correct |! answer |! ✔B) |! excessive |! gas |! to |! the |! main |! burner An |! orifice |! for |! a |! propane |! appliance |! with |! the |! same |! input |! as |! a |! natural |! gas |! appliance |! is A) |! the |! same |! size |! as |! the |! natural |! gas |! orifice B) |! smaller |! than |! the |! natural |! gas |! orifice
C) |! larger |! than |! the |! natural |! gas |! orifice D) |! interchangeable |! with |! the |! natural |! gas |! orifice |! - |! Correct |! answer |! ✔B) |! smaller |! than |! the |! natural |! gas |! orifice Atmospheric |! burners |! are |! designed |! to |! operate |! under: A) |! Normal |! atmospheric |! pressure |! with |! low |! gas |! pressure B) |! high |! air |! pressure |! with |! low |! gas |! pressure C) |! atmospheric |! pressure |! with |! high |! gas |! pressure D) |! compressed |! air |! pressure |! with |! high |! gas |! pressure |! - |! Correct |! answer |! ✔A) |! Normal |! atmospheric |! pressure |! with |! low |! gas |! pressure A |! surface |! combustion |! infrared |! heater |! requires: A) |! no |! vent B) |! a |! class |! "b" |! vent C) |! a |! class |! "BW" |! vent D) |! a |! class |! "C" |! vent |! - |! Correct |! answer |! ✔A) |! no |! vent An |! appliance |! which |! incorporates |! a |! glow |! bar |! has |! a |! __________ignition |! system A) |! standing B) |! spark C) |! manual D) |! hot |! surface |! - |! Correct |! answer |! ✔D) |! hot |! surface
