CETP Pre-Certification Review Questions With Correct Answers

If a service technician is asked to perform a task that he or she is not fully trained or qualified for, the best action is to: - Answer A. Say nothing, gather up his or her tools and supplies, and quietly leave the site B. Attempt to perform the task to the best of his or her abilities C. Promise the customer that he or she will return once trained. D. Tell the customer that he or she cannot perform the task, but will work on getting a technician who can Propane has many advantages as a fuel source, including: - Answer A. It burns slowly because of its low pump-octane B. It is stationary and non-portable C. It is a clean-burning, non-toxic fuel D. It leaves a high-residue as it burns Propane differs form butane in which of the following ways? - Answer A. Propane vaporizes at temperatures above -44 F; butane vaporizes above 32 F B. A gallon of propane is heavier than a gallon of butane C. Propane has a lower vapor pressure than butane when the liquid us at the same temperature D. When burned, propane produces more heat than an equal amount of butane Propane vapor is: - Answer A. Lighter than air B. The same as air C. Heavier than air. D. The same as natural gas Liquid propane is: - Answer A. Light than water B. The same as water C. Heavier than water D. Stable in water When room-temperature propane is released into the air, it immediately: - Answer A. Contracts B. Vaporizes C. Condenses D. Freezes The term for the amount of heat needed to raise the temperature of one pound of water 1 F is called a : - Answer A. CFT B. PHD C. CPR D. BTU While in a closed container, propane must be under _____ while at room temperature to keep it in liquid form. - Answer A. Pressure B. Heater C. Ventilator D. Equalizer Gas warning agents (odorants) are added to propane to: - Answer A. Make the gas last longer B. Make the gas detectable if it leaks into the air C. Add a pleasant smell to the burning fuel D. Make the has more reactive and cimbustible Propane odorants are: - Answer A. Pleasant-smelling and barely detectable B. Bitter-smelling and corrosive C. Distinctive smelling and nontoxic D. Non-burning and colorful An effective way to prevent odorant fade in new containers, or in those that have been open to the atmosphere is to: - Answer A. Open valves on containers in storage B. Purge containers and keep them pressurized until installed C. Remove odorant from containers in use D. Increase the water content in contrainers A customer calls in to report a strong smell of gas at the site. A proper response for the employee to give the customer would be to: - Answer A. Schedule an appointment for a technician to come and check it out B. Purchase a gas detector and monitor the readings C> Ask the neighbors if they can also smell the gas D. Evacuate the structure and keep a safe distance away The three ingredients necessary for combustion are: - Answer A. Nitrogen, pressure, and heat B. Fuel, oxygen, and an ignition source C. Gas, Liquid, and a solid D. Vapor, flame, and air Propane burns most efficiently at which gas-air mixture? - Answer A. 1 part propane to 24 parts air B. 10 parts propane to 20 parts air C. 25 parts propane to 15 parts air D. 50 parts propane to 5 parts air Incomplete combustion of propane results in: - Answer A. Excessive heat production B. Conversion of propane to oxygen C. Inefficient use of fuel and harmful byproducts D. Inability of the propane to burn