Gas CFESA Practice Test Exam REVIEW Questions AND Correct
Answers
A 1 ½" black Iron Gate line running for 50 feet can supply 670
cubic feet of natural gas per hour,
or approximately 670,000 BTU's. A gas pressure regulator is
rated at 800,000 BTU and is 1"
N.P.T. Another regulator is rated at 1,200,000 BTU's and is 1
½" N.P.T. Which regulator must you
use?
A) Either will work as they both have the BTU capacity
B) The 1" because it will be much less expensive
C) The 1 ½" because you must maintain pipe size to prevent
creating restrictions
D) Neither would be the right regulator - ✔✔C
A 3/4 elbow is equivalent to how long a pipe?
A) 2 feet
B) 1 foot
C) 3 feet
D) 4 feet - ✔✔A
,A bank of three fryers is connected to a gas line with a flexible
gas line and quick disconnect
assembly. The customer came in this morning and noticed
that none of the fryers are working.
Checking, he found the pilots were out, and proceeded to light
all three. As soon as he tried to
turn on the first fryer all three pilots went out. What is the
first thing the customer should be
told to check?
A) That the gas valve is turned on
B) That the gas line is not kinked
C) That the quick disconnect is fully engaged together
D) That the power is turned on to the fryers - ✔✔C
A BJ thermostat will be ruined permanently if not adjusted
properly. To make an adjustment you
must:
A) Turn the adjustment screw counter clockwise only
B) Loosen the lock screw before turning the adjustment screw
C) Pry out the adjustment screw before turning it
D) Push in and turn the adjustment screw no more than ¼ turn
in either direction - ✔✔D
,A combination gas valve replaces a separate manual shut off
valve, safety magnet, gas pressure
regulators, and ________.
A) thermocouple
B) thermopile
C) solenoid valve
D) high limit temperature control - ✔✔C
A convection oven is controlled by a cooking computer which
seems to malfunction at busy
times of the day. Jay should check to see that
________________.
A) The thermocouple is putting out the proper voltage
B) The safety valve is not shorted out
C) The computer is properly grounded
D) All of the cooling fans in the control compartment are
operating properly - ✔✔D
A gas fired conveyor oven is slow in firing but heats to the set
temperature. Then the high flame
, disappears and the temperature drops until the oven is barely
warm. Then it heats to
temperature again. You should suspect:
A) The thermocouple
B) The temperature indicator
C) The burner blower motor
D) A sticking solenoid valve - ✔✔D
A gas pressure regulator is shipped alone with most LP fryers,
either separate or as part of the
combination gas valve. This is a secondary regulator meaning
that ___________.
A) It can be connected directly to an LP tank
B) It can be connected only after the pressure regulator on the
LP tank
C) It can be used only if two fryers are being installed
D) It can be used only if the pipe size is 1/2" - ✔✔B
A high efficiency fryer continuously backfires even though the
ignitor has been adjusted. What
should the tech do?
Answers
A 1 ½" black Iron Gate line running for 50 feet can supply 670
cubic feet of natural gas per hour,
or approximately 670,000 BTU's. A gas pressure regulator is
rated at 800,000 BTU and is 1"
N.P.T. Another regulator is rated at 1,200,000 BTU's and is 1
½" N.P.T. Which regulator must you
use?
A) Either will work as they both have the BTU capacity
B) The 1" because it will be much less expensive
C) The 1 ½" because you must maintain pipe size to prevent
creating restrictions
D) Neither would be the right regulator - ✔✔C
A 3/4 elbow is equivalent to how long a pipe?
A) 2 feet
B) 1 foot
C) 3 feet
D) 4 feet - ✔✔A
,A bank of three fryers is connected to a gas line with a flexible
gas line and quick disconnect
assembly. The customer came in this morning and noticed
that none of the fryers are working.
Checking, he found the pilots were out, and proceeded to light
all three. As soon as he tried to
turn on the first fryer all three pilots went out. What is the
first thing the customer should be
told to check?
A) That the gas valve is turned on
B) That the gas line is not kinked
C) That the quick disconnect is fully engaged together
D) That the power is turned on to the fryers - ✔✔C
A BJ thermostat will be ruined permanently if not adjusted
properly. To make an adjustment you
must:
A) Turn the adjustment screw counter clockwise only
B) Loosen the lock screw before turning the adjustment screw
C) Pry out the adjustment screw before turning it
D) Push in and turn the adjustment screw no more than ¼ turn
in either direction - ✔✔D
,A combination gas valve replaces a separate manual shut off
valve, safety magnet, gas pressure
regulators, and ________.
A) thermocouple
B) thermopile
C) solenoid valve
D) high limit temperature control - ✔✔C
A convection oven is controlled by a cooking computer which
seems to malfunction at busy
times of the day. Jay should check to see that
________________.
A) The thermocouple is putting out the proper voltage
B) The safety valve is not shorted out
C) The computer is properly grounded
D) All of the cooling fans in the control compartment are
operating properly - ✔✔D
A gas fired conveyor oven is slow in firing but heats to the set
temperature. Then the high flame
, disappears and the temperature drops until the oven is barely
warm. Then it heats to
temperature again. You should suspect:
A) The thermocouple
B) The temperature indicator
C) The burner blower motor
D) A sticking solenoid valve - ✔✔D
A gas pressure regulator is shipped alone with most LP fryers,
either separate or as part of the
combination gas valve. This is a secondary regulator meaning
that ___________.
A) It can be connected directly to an LP tank
B) It can be connected only after the pressure regulator on the
LP tank
C) It can be used only if two fryers are being installed
D) It can be used only if the pipe size is 1/2" - ✔✔B
A high efficiency fryer continuously backfires even though the
ignitor has been adjusted. What
should the tech do?
