Part 9

Question 1

180. When should a CGI never by operated or used?

Answer 1

a. All of the above (a)
b. To sample liquid fuel
c. When the flashback arrestors removed
d. For sampling gas vapours not identified as suitable by the manufacturer

Question 2

181. All liquid withdrawal propane cylinder service valves must be equipped with?

Answer 2

a. Internal excess flow valve
b. Quick action shut-off valve
c. Manual shut-off valve (C)
d. Back check valve

Question 3

182. What is the expression for the maximum pressure to which any component or portion of the fuel system can be subjected?

Answer 3

a. Relief pressure
b. Maximum working pressure
c. Ultimate stress pressure
d. Maximum allowable operating pressure (D)

Question 4

183. What is the expression for a housekeeping unit, used or intended to be used as a domicile by one or more persons and usually containing cooking, eating, living, sleeping and sanitary facilities:

Answer 4

a. Non-commercial building
b. Dwelling unit (B) COD
c. Residential Occupancy
d. Bed-sitting room

Question 5

184. While examining the operation of the main flame, you notice sooting and a yellow flame. What is a possible cause?

Answer 5

a. Not enough combustion or ventilation are supplied to the room
b. Scale on top of the burner
c. Combustion air inlet of the two-way restricted
d. All of the above (D)

Question 6

185. Which of the following are characteristics of carbon monoxide?

Answer 6

a. Lighter than air and extremely toxic
b. Colorless and tasteless
c. Odorless and Combustible
d. All of the listed choices (D)

Question 7

186. What type of chart compares individual parts in relation to their total as a sector of a circular area?

Answer 7

a. Line Chart
b. Bar Chart
c. Pie Chart (C)
d. Flow Chart

Question 8

187. How can you identify an approved appliance?

Answer 8

a. The approval will be noted in the approvals section of the installation manual
b. Appliance approvals are listed on the internet
c. The word “approved” will be located on the appliance rating plate followed by the letters CE
d. A recognized certification mark or regulatory authority approval label will be located on the appliance (D)

Question 9

188. What is the millivolt open test output of a thermocouple?

Answer 9

a. 20 to 30 (A)
b. 20 to 25
c. 25 to 35
d. 10 to 15

Question 10

189. How is the longest equivalent length determined for systems operating over 2 psig?

Answer 10

a. Add 20% of length of the run
b. Add the equivalent length in feet of straight pipe for each fitting, bend or valve to shortest run of pipe
c. Subtract 20% of length of the run
d. Add the equivalent length in feet of straight pipe for each fitting, bend or valve to the longest pipe run (D)