Questions With Complete Solutions
In either the drop or riser as close as possible to the valve train
of the appliance
A readily accessible shut off valve shall be installed.
Shut off the gas supply and immediately inform the owner and
the distributer
What a Gas Technician is required to do if he finds an appliance
that presents an immediate hazard.
NPS less than or equal to 2.5" and over 50' in length
An inert gas must be used to purge the air from a pipe of this
size and length.
Polarity sensitive (i.e. black test probe must be on negative
terminal)
Direct current (DC) measurements are.
Type K
When installed underground, this type of copper tubing does not
require a protective coating.
All the loads would stop working
If one load fails in a series circuit.
at the end of the hose, near the appliance, and easily reachable
On gas hoses, a shut off valve shall be installed so that it is.
,A short circuit
A badly burned or charred fuse indicates.
Maximum operating pressure
The maximum pressure to which any component or portion of
the fuel system can be subjected.
ohmmeter
Which meter is used to check for electrical continuity.
Type G, K, and L
What three types of copper tubing can be used for gas supply.
CSA
Which organization is responsible for developing and publishing
the National Gas and Oil Codes in Canada.
Applied voltage
The voltage reading across an open switch of an energized
electrical circuit should be.
The pipes diameter in length, but a minimum of 3" or equal to
the internal diameter of the piping it serves.
The minimum size of a dirt pocket drop.
85% to 95% of natural gas is composed of
methane.
50 psig
,Threaded gas piping systems of 200 feet or less having a
working pressure of 10 psig, the minimum test pressure shall be.
180 minutes
Welded gas piping systems of 200 feet or more having a
working pressure of 10 psig, the minimum test duration shall be.
The same as the diameter of pipe, but a maximum of 2" NPS
The maximum pressure drop allowed by the codes for a natural
gas piping system with a supply pressure of 5 psi.
20 ohms
The total resistance of a series circuit that consists of two 10
ohm loads.
Ohms
Electrical resistance is measured in.
Different on the main line compared to each branch line
The amperage reading at any point in a parallel circuit will be.
-260 F
The boiling point of natural gas.
Step-up transformers
Ignition transformers are.
Occupational safety and health administration (OSHA)
Federal agency responsible for ensuring safe and healthy
working conditions.
, Federal aviation administration (faa)
Agency responsible for regulating civil aviation in the United
States.
Transport Canada (TC) and/or Department of Transportation
(DOT)
Government bodies responsible for transportation policies and
regulations.
Environmental protection agency (epa)
Agency responsible for protecting human health and the
environment.
The current required to operate a device rated for 1200 watts at
120 volts is:
10 amps
Natural gas' relative density to air is:
0.62
At every care or detention occupancy, commercial, industrial,
and assembly building, piping or tubing shall be identified by:
Painted yellow, yellow branding, or labeled or marked GAS or
PROPANE
(T/F) The gas code does not permit the repair of a damaged heat
exchanger in a dwelling
True
The holder of a G2 certification may install and service gas-fired
equipment with inputs up to: