Part # 4 Flashcards
- Which burner supplies combustion air at sufficient pressure to overcome the resistance of the burner only:
a. Forced draft burner
b. Combustion burner
c. Fan assisted burner (c)
d. Power Burner
- What will displaying arrogant body language demonstrate to the customer?
a. You fully understand the problem and are competent to correct it
b. That you are far too skilled for such a low level of task (b)
c. They are fortunate to have someone with your advanced skills looking after their problems
d. None of the above
- At 120 volts and a resistance of 25 Ohms, what would be the amperage?
a. 3.2
b. 4.8 (b)
c. 4.0
d. 3.9
- If an appliance input is 100,000 Btuh and clock on the 2 foot dial, how many seconds would it take?
a. 63 seconds
b. 72 seconds (b)
c. 69 seconds
d. 75 seconds
- What is the kilowatt output of an electric heater that has a 240 volt supply and draws 50 amps:
a. 12 (a)
b. 120
c. 1,200
d. 12,000
- What is current?
a. A measure of the quantity of electron flow (a)
b. A measure of how much a circuit will limit current flow
c. A measure of the amount of power used by a circuit
d. A measure of the amount of electrical pressure
- Identify the corresponding measurement for the figure below:
a. 160 k ohms
b. 120 V AC
c. 2.3k ohms (c)
d. 35 V DC
- A G2/Intermediate Technician:
a. May recharge an add-on central air conditioner with refrigerant
b. May replace a defective residential automatic gas-fired water heater (b)
c. May design and install the duct work required for a new installation
d. Must advise the user of the appliance that a plumber is required to replace the defective water heater
- What is the relief pressure set at on propane cylinder?
a. 275 psig
b. 370 psig
c. 375 psig (c)
d. 365 psig
- By definition, the specific gravity of a gas (vapour) is the:
a. Volume of gas compared to the weight of an equal volume of air
b. Weight of the gas as compared to the weight of air
c. Volume of gas as compared to the weight of air
d. Weight of the gas as compared to the weight of an equal volume of air (d)
- For current to flow through a wiring system there must be:
a. A difference in electrical pressure between two connected points (a)
b. A difference in voltage between two connected points
c. A difference in power between two connected points
d. A difference in wire size between two connected points
- Which word describes the phrase “acceptable to the authority having jurisdiction”:
a. Licensed
b. Endorsed
c. Approved (c)
- What is the flammability range of Butane?
a. 12% to 74%
b. 1.9% to 8.5% (b)
c. 23.5% to 10%
d. 2.5% to 5.5%
- On a 120 volt circuit, the voltage check on an open switch would be?
a. 24 Volt
b. 0 Volt
c. 120 Volt (c)
d. 110 Volt
- How much air is required to burn 1,000 (28.3 m3) cubic feet of natural gas per hour?
a. 100 ft3 (28.3 m3)
b. 100 ft3 (2.83 m3)
c. 100,000 ft3 (2831.7 m3)
d. 10,000 ft3 (283.1 m3) (d)
- Using the information given in figure below of a multiple appliance piping system, answer the following question. Furnace input: 120,000 Btu, Gas Range = 65,000 Btu. The required pipe size for the branch line (B) supplying the gas furnace is?
a. ¾ Inch (a)
b. ½ Inch
c. 1 Inch
d. 1 ½ Inch
- A masonry, concrete or metal chimney shall be built and installed in accordance with:
a. Dangerous goods transportation and regulations
b. Gas Code Book
c. Occupational Health and Safety Act and Regulations
d. Local Building Code (d)
- Where is Mercaptan usually added to natural gas?
a. City Gate
b. Pipeline Distribution Gates
c. Compressor Station (c)
d. Gas Well
- What is the minimum pipe diameter for underground installation?
a. 5/8
b. ½ (b)
c. ¾
d. 3/8
- What are the components of the fire triangle?
a. Heat, Fuel, CO2
b. Heat, Fuel, CO
c. Heat, Heat, O3
d. Heat, Fuel, O2 (d)
