(2021 IFGC) EXAM WITH CORRECT
ACTUAL QUESTIONS AND CORRECTLY
WELL DEFINED ANSWERS LATEST
ALREADY GRADED A+
(Section 202 General definitions.) - ANSWERS-The amount
of gas that occupies 1 cubic foot when at temperature of
60°F saturated with water vapor and under a pressure
equivalent to that of 30 inches of mercury.
Demand
(Section 202 General definitions.) - ANSWERS-The maximum
amount of gas input required per unit of time, usually
expressed in cubic feet per hour, or Btu/h (1 Btu/h = 0.2931
W)
Dilution Air
,(Section 202 General definitions.) - ANSWERS-Air that is
introduced into a draft hood and is mixed with the flue
gases.
Draft
(Section 202 General definitions.) - ANSWERS-The pressure
difference existing between the appliance or any
component part and the atmosphere, that causes a
continuous flow of air and products of combustion through
the gas passages of the appliance to the atmosphere.
Excess Flow Valve
(Section 202 General definitions.) - ANSWERS-A valve
designed to activate when the fuel gas passing through it
exceeds a prescribed flow rate.
Furnace, Central
(Section 202 General definitions.) - ANSWERS-A completely
self-contained appliance for heating air by transfer of heat
,of combustion through metal to the air, and designed to
supply heated air through ducts to spaces remote or
adjacent to the appliance location.
Furnace Plenum
(Section 202 General definitions.) - ANSWERS-An air
compartment or chamber to which one or more ducts are
connected and that forms part of an air distribution.
Gas Piping
(Section 202 General definitions.) - ANSWERS-An installation
of pipe, valves or fitting installed on a premises or in a
building and utilized to convey fuel gas.
Hazardous Location
(Section 202 General definitions.) - ANSWERS-Any location
considered to be a fire hazard for flammable vapors, dust,
combustible fibers or other highly combustible substances.
Joint, Flared
, (Section 202 General definitions.) - ANSWERS-A metal-to-
metal compression join in which a conical spread is made on
the end of a tube that is compressed by a flare nut against a
mating flare.
Labeled
(Section 202 General definitions) - ANSWERS-Equipment,
materials or products to which have been affixed a label,
seal, symbol or other identifying mark of a national
recognized testing laboratory, approved agency or other
organization.
Liquefied Petroleum Gas or LPG (LP-GAS)
(Section 202 General definitions.) - ANSWERS-A gas
composed predominately of propane, propylene, butanes or
butylenes, or mixtures thereof that is gaseous under normal
atmosphere conditions, but is capable of being liquefied
under moderate pressure at normal temperature.