G2 Exam Prep questions well
answered already passed
Manometer - correct answer ✔✔The best tool for adjusting and setting the pressure on an
appliance regulator:
a.
Manometer
b.
Velometer
c.
Psychrometer
d.
An analyzer
Not be used in a concealed location (6.3.9) - correct answer ✔✔3/8 NPS black iron pipe shall?
a. Not be used for propane
b. Not be used in a concealed location
c. Not be used for natural gas
d. Not be used for indoors
,6' (6.21.3) - correct answer ✔✔A corrugated metal gas connector connected to a range must
not exceed?
a. 6'
b. 5'
c. 3'
d. 4'
In either drop of riser of a residential appliance (6.18.2) - correct answer ✔✔A manual shut-off
valve shall be installed?
a. only on natural gas appliances
b. in either drop of riser of a residential appliance
c. downstream of the union
d. at the drip pocket
50 psig for 60 minutes (Table 6.3) - correct answer ✔✔Black iron pipe 2 1/2 NPS at 150' long
shall be pressure tested to?
a. The greater of 50psig or 1.5 times the maximum operation pressure for 180 minutes
b. 50 psig for 180 minutes
c. 1.5 times the maximum operation pressure for 180 minutes
d. 50 psig for 60 minutes
Only copper type L coated, type G coated, type K uncoated (6.2.7) - correct answer ✔✔Buried
piping or tubing shall be?
,a. only copper type L coated, type G coated, type K uncoated
b. only copper type K, L or type G
c. schedule 50 ASTM A-53
d. only copper type L or G coated
The difference in the working pressure at the gas meter, and the working pressure at the
appliance regulator - correct answer ✔✔What is pressure drop?
a. The difference in the static pressure at the meter, and the working pressure at the appliance
regulator
b. The difference between the U tube manometer is the end that is open to the atmosphere
and the pressurized side when the appliance regulator is working
c. The difference between supply pressure and appliance manifold pressure when the appliance
calls for heat
d. The difference in the working pressure at the gas meter, and the working pressure at the
appliance regulator
Malleable iron and steel (6.2.2) - correct answer ✔✔Fittings used for steel piping may be made
from?
a. brass or iron
b. copper to malleable iron
c. steel and plastic
d. malleable iron and steel
Buried not less than 36" below grade
(6.16.15) - correct answer ✔✔Posts protecting piping and tubing entering a building from
vehicular damage shall be?
, a. clearly marked and identified with yellow paint
b. Be spaced not more than 48" apart
c. Buried not less than 36" below grade
d. Made from 6x6 pressure treated wood
9.25' (Table A 16) - correct answer ✔✔The equivalent length of a 2 1/2 NPS forged tee is?
a. 9.25'
b. 12.4'
c. 15.3'
d. 10.3'
10' (3m) (Table 6.2) - correct answer ✔✔What is the maximum horizontal spacing of supports
for N.P.S. 1 1/4 inch gas pipe?
a. 8'
b. 15'
c. 6'
d. 10'
Enter above grade (6.15.8) - correct answer ✔✔When gas piping enters a building, it must?
a. Enter above grade
b. Be taped, painted, and sleeved
c. Have a tracer wire
answered already passed
Manometer - correct answer ✔✔The best tool for adjusting and setting the pressure on an
appliance regulator:
a.
Manometer
b.
Velometer
c.
Psychrometer
d.
An analyzer
Not be used in a concealed location (6.3.9) - correct answer ✔✔3/8 NPS black iron pipe shall?
a. Not be used for propane
b. Not be used in a concealed location
c. Not be used for natural gas
d. Not be used for indoors
,6' (6.21.3) - correct answer ✔✔A corrugated metal gas connector connected to a range must
not exceed?
a. 6'
b. 5'
c. 3'
d. 4'
In either drop of riser of a residential appliance (6.18.2) - correct answer ✔✔A manual shut-off
valve shall be installed?
a. only on natural gas appliances
b. in either drop of riser of a residential appliance
c. downstream of the union
d. at the drip pocket
50 psig for 60 minutes (Table 6.3) - correct answer ✔✔Black iron pipe 2 1/2 NPS at 150' long
shall be pressure tested to?
a. The greater of 50psig or 1.5 times the maximum operation pressure for 180 minutes
b. 50 psig for 180 minutes
c. 1.5 times the maximum operation pressure for 180 minutes
d. 50 psig for 60 minutes
Only copper type L coated, type G coated, type K uncoated (6.2.7) - correct answer ✔✔Buried
piping or tubing shall be?
,a. only copper type L coated, type G coated, type K uncoated
b. only copper type K, L or type G
c. schedule 50 ASTM A-53
d. only copper type L or G coated
The difference in the working pressure at the gas meter, and the working pressure at the
appliance regulator - correct answer ✔✔What is pressure drop?
a. The difference in the static pressure at the meter, and the working pressure at the appliance
regulator
b. The difference between the U tube manometer is the end that is open to the atmosphere
and the pressurized side when the appliance regulator is working
c. The difference between supply pressure and appliance manifold pressure when the appliance
calls for heat
d. The difference in the working pressure at the gas meter, and the working pressure at the
appliance regulator
Malleable iron and steel (6.2.2) - correct answer ✔✔Fittings used for steel piping may be made
from?
a. brass or iron
b. copper to malleable iron
c. steel and plastic
d. malleable iron and steel
Buried not less than 36" below grade
(6.16.15) - correct answer ✔✔Posts protecting piping and tubing entering a building from
vehicular damage shall be?
, a. clearly marked and identified with yellow paint
b. Be spaced not more than 48" apart
c. Buried not less than 36" below grade
d. Made from 6x6 pressure treated wood
9.25' (Table A 16) - correct answer ✔✔The equivalent length of a 2 1/2 NPS forged tee is?
a. 9.25'
b. 12.4'
c. 15.3'
d. 10.3'
10' (3m) (Table 6.2) - correct answer ✔✔What is the maximum horizontal spacing of supports
for N.P.S. 1 1/4 inch gas pipe?
a. 8'
b. 15'
c. 6'
d. 10'
Enter above grade (6.15.8) - correct answer ✔✔When gas piping enters a building, it must?
a. Enter above grade
b. Be taped, painted, and sleeved
c. Have a tracer wire
