G2 exam
Study online at https://quizlet.com/_h4dmf0
1. A draft hood will prevent what? A down draft from enter-
ing an appliance
2. A receptacle-mounted ground fault interrupter pro- Current flow to ground
tects against?
3. When a draft control is required; which of the follow- An incinerator
ing appliances would utilize a single acting type draft
regulator
4. A fire tube boiler had Water outside the tube
and glue gases inside
5. What is the minimum clearance from combustibles 9"
materials to a single wall vent connector from a con-
version burner with a draft hood
6. What is the point where two metals are joined in a Hot junction
thermocouple
7. The Ontario building code requires that master bed- 20CFM
rooms must have a minimum ventilation air supply of
8. The primary function of a surge arrestor in the top of Reduce the opening
a regulator is to speed of the regulator
9. As the temperature of a thermistor increases, the cur- Increases
rent flow through it
10. As the length of a conductor increases It's resistance increases
11. A propane vaporizer shall not raise the pressure in the 215psig (1500 kPa)
tank in excess of
, G2 exam
Study online at https://quizlet.com/_h4dmf0
12. In a domestic heat pump application, what is the min- 450CFM
imum volume of supply air (CFM) per ton of cooling
required
13. In domestic air conditioning applications, what is the 400CFM
minimum volume of supply air (CFM) per ton of cool-
ing
14. What is used to remove the start winding from oper- A potential relay
ation when the motor reaches approximately 75% of
its normal running speed
15. How often should a t-stay be cleaned At least once a year
16. Tubing systems for residential buildings should be 6 ft along the entire length
identified utilizing yellow labels or markings with in-
tervals not exceeding
17. To what angle should pipe be beveled if it is to be 37.5 degrees
welded
18. The temp of a high intensity infrared heater could 1800 F
reach up to
19. What is the minimum ventilation rate in the master 10 L per second
bedroom in a dwelling unit
20. What is not commonly used as a overpressure protec- Leak limiter
tion device
21. What purpose will the fan control perform in a furnace Start the fan, stop the fan
22. What is the minimum clearance required between 6 inches
combustible material and a single wall vent connector
, G2 exam
Study online at https://quizlet.com/_h4dmf0
23. Polarization in an AC circuit refers to The difference between
hot, neutral and ground
24. When the flow rate through a pool heater is greater A manual bypass valve be-
than 125 gallons per minute, what is required to be tween the heater and the
installed on the heater and where inlet and outlet pipes
25. A gradual decrease in cooling efficiency of a gas fired Off-level operation
refrigerator is indicative of?
26. Where is the lowest air pressure in a forced warm air Upstream of the blower
heating system
27. When a new appliance is to be installed in a typical NMD
residential basement and the supply wiring is to be
concealed, which type of wire is acceptable, and most
cost effective
28. Which instrument is used to determine the speed of a A tachometer
direct drive motor
29. Before lighting a burner in a steam boiler ensure that There is water in the boiler
30. Armored cable is called BX cable
31. A diode Allows current to only flow
in one direction
32. When using a glue gas analyzer and you are in doubt By comparing it to a
of the reading, how could you verify the accuracy of known sample
the instrument
33. 120 - 130f
Study online at https://quizlet.com/_h4dmf0
1. A draft hood will prevent what? A down draft from enter-
ing an appliance
2. A receptacle-mounted ground fault interrupter pro- Current flow to ground
tects against?
3. When a draft control is required; which of the follow- An incinerator
ing appliances would utilize a single acting type draft
regulator
4. A fire tube boiler had Water outside the tube
and glue gases inside
5. What is the minimum clearance from combustibles 9"
materials to a single wall vent connector from a con-
version burner with a draft hood
6. What is the point where two metals are joined in a Hot junction
thermocouple
7. The Ontario building code requires that master bed- 20CFM
rooms must have a minimum ventilation air supply of
8. The primary function of a surge arrestor in the top of Reduce the opening
a regulator is to speed of the regulator
9. As the temperature of a thermistor increases, the cur- Increases
rent flow through it
10. As the length of a conductor increases It's resistance increases
11. A propane vaporizer shall not raise the pressure in the 215psig (1500 kPa)
tank in excess of
, G2 exam
Study online at https://quizlet.com/_h4dmf0
12. In a domestic heat pump application, what is the min- 450CFM
imum volume of supply air (CFM) per ton of cooling
required
13. In domestic air conditioning applications, what is the 400CFM
minimum volume of supply air (CFM) per ton of cool-
ing
14. What is used to remove the start winding from oper- A potential relay
ation when the motor reaches approximately 75% of
its normal running speed
15. How often should a t-stay be cleaned At least once a year
16. Tubing systems for residential buildings should be 6 ft along the entire length
identified utilizing yellow labels or markings with in-
tervals not exceeding
17. To what angle should pipe be beveled if it is to be 37.5 degrees
welded
18. The temp of a high intensity infrared heater could 1800 F
reach up to
19. What is the minimum ventilation rate in the master 10 L per second
bedroom in a dwelling unit
20. What is not commonly used as a overpressure protec- Leak limiter
tion device
21. What purpose will the fan control perform in a furnace Start the fan, stop the fan
22. What is the minimum clearance required between 6 inches
combustible material and a single wall vent connector
, G2 exam
Study online at https://quizlet.com/_h4dmf0
23. Polarization in an AC circuit refers to The difference between
hot, neutral and ground
24. When the flow rate through a pool heater is greater A manual bypass valve be-
than 125 gallons per minute, what is required to be tween the heater and the
installed on the heater and where inlet and outlet pipes
25. A gradual decrease in cooling efficiency of a gas fired Off-level operation
refrigerator is indicative of?
26. Where is the lowest air pressure in a forced warm air Upstream of the blower
heating system
27. When a new appliance is to be installed in a typical NMD
residential basement and the supply wiring is to be
concealed, which type of wire is acceptable, and most
cost effective
28. Which instrument is used to determine the speed of a A tachometer
direct drive motor
29. Before lighting a burner in a steam boiler ensure that There is water in the boiler
30. Armored cable is called BX cable
31. A diode Allows current to only flow
in one direction
32. When using a glue gas analyzer and you are in doubt By comparing it to a
of the reading, how could you verify the accuracy of known sample
the instrument
33. 120 - 130f
