Part 8

Question 1

170. What type of air is premixed with gas prior to ignition?

Answer 1

a. Primary Air (a)
b. Dilution Air
c. Excess Air
d. Combustion Air

Question 2

171. A Bunsen flame is caused by:

Answer 2

a. Not premixing air and fuel prior to combustion
b. A low ignition temperature
c. The presence of carbon monoxide
d. Premixing air and fuel prior to combustion (d)

Question 3

172. What is the speed of a propane flame in inches per second?

Answer 3

a. 11 (a)
b. 10
c. 14
d. 12

Question 4

173. What is electromotive force another expression for?

Answer 4

a. Resistance
b. Voltage (b)
c. Current
d. Power

Question 5

174. What is the term for a device used to control and maintain within acceptable limits, a uniform outlet pressure?

Answer 5

a. Pressure transducer
b. Uniform pressure device
c. Pressure control
d. Pressure regulator (d) cod

Question 6

175. What is the specific gravity of a natural gas vapour?

Answer 6

a. 0.98
b. 1.52
c. 0.55 (c)
d. 1.1

Question 7

176. Atoms are made of particles including:

Answer 7

a. Croutons
b. Electrons (b)
c. Pretrons

Question 8

177. Which of the following best describes a device that automatically shuts off the fuel supply when de-energized by a combustion safety control, safety limit device, or a loss of the actuating medium?

Answer 8

a. Main gas valve
b. Relief valve
c. Safety shut-off valve (c)
d. Emergency shut-off valve

Question 9

178. Which of the following establishes minimum standards for the repair and servicing of gas appliances?

Answer 9

a. Underwriters Laboratories of Canada
b. National Building Code
c. Canadian Standards Associations
d. Natural Gas and Propane Installation Code (d)

Question 10

179. What type of hard hat cannot be worn when working on electrical equipment?

Answer 10

a. Fiberglass
b. Styrofoam filled
c. Green
d. Metallic (d)