Which of the terms below would best be described as "A force resisting the motion of solid surfaces, fluid layers, and material elements sliding past each other."?
There are several hydrocarbons that are commonly seen in gasfitting. Which of the answers below is the chemical formula for methane?
A charge that flows through a conductor is considered an electrical current. Which of the current flows below would best represent a negative to positive flow??
Local utility gas pressures are usually different than the transmission pressure. Which of the answers below correctly identifies the normal operating pressures of a low pressure system?
There are several basic designs for pilot burners. Which of the designs below would be the pilot would be found in residential appliances most frequently?
The water that natural gas contains should be removed before it is transported from the wellhead. Which of the terms below is best described as " a process that uses a liquid desiccant to remove the water vapor."?
Local utility gas pressures are usually different than the transmission pressure. Which of the answers below correctly identifies the normal operating pressures of a intermediate pressure system?
A thermocouple energizes a power unit, either open or closed. Which of the items below would a thermocouple hold open while energized?
Several pressure test are performed using a manometer. Which of the the tests below would be done while no gas is flowing?
There are several hydrocarbons that are commonly seen in gasfitting. Which of the answers below is the chemical formula for iso-butane?
All appliances are approved for a specific altitude. Which of the elevations below would best represent a "sea level" rating?
Certified equipment all has a rating plate attached to them. Which of the answers below is considered optional information on a rating plate?
To insure the required ignition of the main burner, a pilot is used. Which of the pilots below would be comprised of main burner, a gas valve to supply the burner, and a thermocouple.
To help in the performance and longevity of a thermopile, the pilot flame must be positioned correctly. Which of the measurements below correctly identifies the impingement of the pilot flame?
Pilot burners are classified by their ignition sequence. Which of the pilots below would burn at all times, even if the main burner is fired?
Electron theory has many parts that define what electricity is. Which of the answers below is best described as "That which occupies space and possesses mass."?
Appliance rating plates contain vital information for installation or servicing. Which of the numbers below corresponds to where the manifold pressure would be?
All matter exists in one of the 4 states. Which of the properties of matter would best define "gases"?
Standatas have several classifications associated with them. Which of those classifications would be considered as something that should be done?
A thermocouple energizes a power unit, either open or closed. Which of the items below would a thermocouple hold closed while energized?
Differential pressure has to be within certain allowable limits described in any gas code. Which of the pressures below would be used to calculate a differential pressure?
Electron theory has many parts that define what electricity is. Which of the answers below is best described as "The smallest particle of a substance that has all of the physical and chemical properties of that substance."?
There are several different pieces of electrical testing equipment. Which of the answers below is best described as "A meter that measures the electrical resistance of a circuit."?
An orifice is integral to a pilot burners design. Which of the answers represents the number of different designs for pilot burners?
All of the liquid hydrocarbons have different relative densities. Which of the answers below correctly identifies the relative density of Methane?
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