TSSA G2 Study Quiz UPDATED ACTUAL
Exam Questions and CORRECT Answers
On a pilot what causes a lazy yellow flame? - CORRECT ANSWER - Dirty lint screen
Primary air opening
Orifice too big
Main functions of a gas regulator? - CORRECT ANSWER - Reduce and maintain
downstream pressure.Pressure to appliance can be adjusted.Smooth and even flow.
What does the measuring element do? - CORRECT ANSWER - Measures downstream
pressure.
What is the restricting element? - CORRECT ANSWER - Increases or decreases gas flow
Loading element does what? - CORRECT ANSWER - set operating pressure.
What is the closing force in a regulator? - CORRECT ANSWER - The downstream outlet
gas pressure
What is the function of a regulator vent? - CORRECT ANSWER - Allow gas to escape in
case of diaphragm rupture or downstream over pressure
At the leak limiting orifice how much gas is allowed to leak in a one hour period? - CORRECT
ANSWER - 1 cu ft per hour.
Surge limiting valve are used where? - CORRECT ANSWER - Applications where
regulators are required to be slow opening.
,Where is the service regulator located?And used to do what? - CORRECT ANSWER - At
the end of the utility's pipeline. It's used to reduce supply pressure to the building pressure.
Appliance regulators serve what purpose? - CORRECT ANSWER - The reduce the
building pressure to the manifold pressure on the appliance.
What is the system regulator?And what pressures does it bring it down to? - CORRECT
ANSWER - The regulator between the service regulator and the appliance regulator.From
125-5 psig
What does a first stage regulator do, and brings it down to what pressure? - CORRECT
ANSWER - It reduces cylinder pressure down to supply line pressure.Reduces pressure
from 250-375 psig down to 10 psig.
Second stage regulator does what? And brings it down to what pressures? - CORRECT
ANSWER - It reduces supply line pressure to building pressure.Pressure reduced from 10
psig down to 11" w.c.
Corrugated metal gas connector, connected to a range must not exceed - CORRECT
ANSWER - 6ft
Black iron pipe 2 1/2 NPS at 150ft long shall be pressure tested to? - CORRECT
ANSWER - 1.5 times the maximum operation pressure for 180 minutes
A manual shut off valve shall be installed - CORRECT ANSWER - In either drop of riser
of a residential appliance
Buried piping or tubing shall be - CORRECT ANSWER - Only copper type L coated,
Type G coated, Type K uncoated
Pressure drop - CORRECT ANSWER - The difference in working pressure at the gas
meter, and the working pressure at the appliance regulator
, Fittings used of steel piping may be made from? - CORRECT ANSWER - Malleable iron
and steel
The equivalent length of a 2 1/2 forged tee is? - CORRECT ANSWER - 9.25ft
What is the maximum spacing of supports for NPS 11/4 inch gas pipe into a home? - CORRECT
ANSWER - 10ft
Direct vent wall furnace shall use what length of corrugated metal gas connector? - CORRECT
ANSWER - 2ft
Propane maximim pressure operating pressure is defined as? - CORRECT ANSWER - 350
psi when connected to the outlet of a pump or compressor
What is the maximum distance a readily accessible manual shut off valve may be installed from
an appliance? - CORRECT ANSWER - 50ft and identified
When a high pressure test is required on a gas piping system, what type of inert gas shall be
used? - CORRECT ANSWER - Nitrogen and Carbon Dioxyde
What is the required minimum distance plastic piping or tubing must be installed under a
commercial parking lot? - CORRECT ANSWER - 24in
A combination fan limit control on a residential warm air furnace shuts off fan heating cycle at? -
CORRECT ANSWER - 90F
Diode - CORRECT ANSWER - Only allows current to flow in one direction
A heat anticipator is wired in ? - CORRECT ANSWER - Series with the gas valve
Exam Questions and CORRECT Answers
On a pilot what causes a lazy yellow flame? - CORRECT ANSWER - Dirty lint screen
Primary air opening
Orifice too big
Main functions of a gas regulator? - CORRECT ANSWER - Reduce and maintain
downstream pressure.Pressure to appliance can be adjusted.Smooth and even flow.
What does the measuring element do? - CORRECT ANSWER - Measures downstream
pressure.
What is the restricting element? - CORRECT ANSWER - Increases or decreases gas flow
Loading element does what? - CORRECT ANSWER - set operating pressure.
What is the closing force in a regulator? - CORRECT ANSWER - The downstream outlet
gas pressure
What is the function of a regulator vent? - CORRECT ANSWER - Allow gas to escape in
case of diaphragm rupture or downstream over pressure
At the leak limiting orifice how much gas is allowed to leak in a one hour period? - CORRECT
ANSWER - 1 cu ft per hour.
Surge limiting valve are used where? - CORRECT ANSWER - Applications where
regulators are required to be slow opening.
,Where is the service regulator located?And used to do what? - CORRECT ANSWER - At
the end of the utility's pipeline. It's used to reduce supply pressure to the building pressure.
Appliance regulators serve what purpose? - CORRECT ANSWER - The reduce the
building pressure to the manifold pressure on the appliance.
What is the system regulator?And what pressures does it bring it down to? - CORRECT
ANSWER - The regulator between the service regulator and the appliance regulator.From
125-5 psig
What does a first stage regulator do, and brings it down to what pressure? - CORRECT
ANSWER - It reduces cylinder pressure down to supply line pressure.Reduces pressure
from 250-375 psig down to 10 psig.
Second stage regulator does what? And brings it down to what pressures? - CORRECT
ANSWER - It reduces supply line pressure to building pressure.Pressure reduced from 10
psig down to 11" w.c.
Corrugated metal gas connector, connected to a range must not exceed - CORRECT
ANSWER - 6ft
Black iron pipe 2 1/2 NPS at 150ft long shall be pressure tested to? - CORRECT
ANSWER - 1.5 times the maximum operation pressure for 180 minutes
A manual shut off valve shall be installed - CORRECT ANSWER - In either drop of riser
of a residential appliance
Buried piping or tubing shall be - CORRECT ANSWER - Only copper type L coated,
Type G coated, Type K uncoated
Pressure drop - CORRECT ANSWER - The difference in working pressure at the gas
meter, and the working pressure at the appliance regulator
, Fittings used of steel piping may be made from? - CORRECT ANSWER - Malleable iron
and steel
The equivalent length of a 2 1/2 forged tee is? - CORRECT ANSWER - 9.25ft
What is the maximum spacing of supports for NPS 11/4 inch gas pipe into a home? - CORRECT
ANSWER - 10ft
Direct vent wall furnace shall use what length of corrugated metal gas connector? - CORRECT
ANSWER - 2ft
Propane maximim pressure operating pressure is defined as? - CORRECT ANSWER - 350
psi when connected to the outlet of a pump or compressor
What is the maximum distance a readily accessible manual shut off valve may be installed from
an appliance? - CORRECT ANSWER - 50ft and identified
When a high pressure test is required on a gas piping system, what type of inert gas shall be
used? - CORRECT ANSWER - Nitrogen and Carbon Dioxyde
What is the required minimum distance plastic piping or tubing must be installed under a
commercial parking lot? - CORRECT ANSWER - 24in
A combination fan limit control on a residential warm air furnace shuts off fan heating cycle at? -
CORRECT ANSWER - 90F
Diode - CORRECT ANSWER - Only allows current to flow in one direction
A heat anticipator is wired in ? - CORRECT ANSWER - Series with the gas valve
