RVTI LEVEL 2 PROPANE EXAM
QUESTIONS AND CORRECT
ANSWERS ALREADY PASSED
A high-pressure propane pigtail is connected between which two components?
A. The cylinder and the bulkhead fitting
B. The cylinder and automatic changeover mechanism
C. The regulator and the appliance
D. The quick disconnect and the regulator - Answer-B. The cylinder and automatic
changeover mechanism
To locate a leak the technician should
A. Spray every fitting with soapy solution
B. Light a match and look for flames
C. Replace the regulator
D. Weigh the container - Answer-A. Spray every fitting with soapy solution
Which of the following is NOT a cause of a regulator leaking propane?
A. Faulty regulator assembly
B. Defective excess flow valve
C. Punctured diaphragm
D. Inverted flare fitting - Answer-B. Defective excess flow valve
The internal level arm assembly in a regulator is controlled by
A. Pressure spring assembly
B. Diaphragm post
C. Pressure adjustment cap
D. Size of the orifice opening - Answer-A. Pressure spring assembly
The second stage vent of the regulator must be positioned
A. Downward within 45 degrees of the vertical plane
B. Upward within 45 degrees of the vertical plane
C. Parallel to the horizontal plane
D. Perpendicular to the vehicle or ground - Answer-A. Downward within 45 degrees of
the vertical plane
As the ambient temperature decreases, the rate of vaporization
A. Increases
B. Decreases
, C. Stays the same
D. Fluctuates up and down - Answer-B. Decreases
When testing the automatic changeover mechanic function which of the following is
NOT required?
A. Make sure all appliances and pilot lights are turned off
B. Have gas in both cylinders
C. Rotate the selector lever toward the reserve cylinder
D. Have one pigtail disconnected from the cylinder valves - Answer-D. Have one pigtail
disconnected
If the customer complains of low or no propane pressure, the technician should
A. Open the container valve
B. Make sure all appliances are on
C. Install a mono meter close to the system regulator
D. Close the service valve very slowly - Answer-A. Open container valve
If an appliance is rated at 30,000 BTU/hr, how many approximate hours per gallon will
that appliance operate if it is running continuously
A. 3 hours
B. 6 hours
C. 9 hours
D. 12 hours - Answer-A. Three hours
The total rate of vaporization of propane is determined by which two factors
A. Temperature of the lp and the amount of surface area wetted by the propane
B. The ambient air temperature and the number of appliances in the system
B. The ambient air temperature and the number of appliances in the system
C. The btu rating of the regulator and the ambient air temperature
D. The temperature of the lp and the length of the distribution system - Answer-A.
Temperature of the LP and the amount of the surface area wetted by the propane
During winter travel, a customer states that the cooktop burner ignites but the furnace
will not ignite. Which of the following is NOT a logical reason for this situation
A. Faulty furnace
B. Propane container below 50% full
C. Kink in the propane line to furnace
D. Propane container overfilled - Answer-D. Propane container overfilled
The lower the propane fuel level, the __________ the wetted surface and the ________
the vaporization rate.
A. Less, higher
B. Less, lower
C. More, lower
D. More, higher - Answer-B. Less, lower
QUESTIONS AND CORRECT
ANSWERS ALREADY PASSED
A high-pressure propane pigtail is connected between which two components?
A. The cylinder and the bulkhead fitting
B. The cylinder and automatic changeover mechanism
C. The regulator and the appliance
D. The quick disconnect and the regulator - Answer-B. The cylinder and automatic
changeover mechanism
To locate a leak the technician should
A. Spray every fitting with soapy solution
B. Light a match and look for flames
C. Replace the regulator
D. Weigh the container - Answer-A. Spray every fitting with soapy solution
Which of the following is NOT a cause of a regulator leaking propane?
A. Faulty regulator assembly
B. Defective excess flow valve
C. Punctured diaphragm
D. Inverted flare fitting - Answer-B. Defective excess flow valve
The internal level arm assembly in a regulator is controlled by
A. Pressure spring assembly
B. Diaphragm post
C. Pressure adjustment cap
D. Size of the orifice opening - Answer-A. Pressure spring assembly
The second stage vent of the regulator must be positioned
A. Downward within 45 degrees of the vertical plane
B. Upward within 45 degrees of the vertical plane
C. Parallel to the horizontal plane
D. Perpendicular to the vehicle or ground - Answer-A. Downward within 45 degrees of
the vertical plane
As the ambient temperature decreases, the rate of vaporization
A. Increases
B. Decreases
, C. Stays the same
D. Fluctuates up and down - Answer-B. Decreases
When testing the automatic changeover mechanic function which of the following is
NOT required?
A. Make sure all appliances and pilot lights are turned off
B. Have gas in both cylinders
C. Rotate the selector lever toward the reserve cylinder
D. Have one pigtail disconnected from the cylinder valves - Answer-D. Have one pigtail
disconnected
If the customer complains of low or no propane pressure, the technician should
A. Open the container valve
B. Make sure all appliances are on
C. Install a mono meter close to the system regulator
D. Close the service valve very slowly - Answer-A. Open container valve
If an appliance is rated at 30,000 BTU/hr, how many approximate hours per gallon will
that appliance operate if it is running continuously
A. 3 hours
B. 6 hours
C. 9 hours
D. 12 hours - Answer-A. Three hours
The total rate of vaporization of propane is determined by which two factors
A. Temperature of the lp and the amount of surface area wetted by the propane
B. The ambient air temperature and the number of appliances in the system
B. The ambient air temperature and the number of appliances in the system
C. The btu rating of the regulator and the ambient air temperature
D. The temperature of the lp and the length of the distribution system - Answer-A.
Temperature of the LP and the amount of the surface area wetted by the propane
During winter travel, a customer states that the cooktop burner ignites but the furnace
will not ignite. Which of the following is NOT a logical reason for this situation
A. Faulty furnace
B. Propane container below 50% full
C. Kink in the propane line to furnace
D. Propane container overfilled - Answer-D. Propane container overfilled
The lower the propane fuel level, the __________ the wetted surface and the ________
the vaporization rate.
A. Less, higher
B. Less, lower
C. More, lower
D. More, higher - Answer-B. Less, lower
