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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
The science that deals with the relations between heat and forms of energy is called
A. Potential energy
B. Thermodynamics
C. Kinetics
D. Biology - Answer✅✅B. Thermodynamics
Boyle's law explains with certainty that the _____ and _____ are inversely
proportional to one another.
A. Pressure, volume
B. Energy, btu rating
C. Flow, pressure
D. Volume, energy - Answer✅✅A. Pressure, volume
Where does the pressure in a propane container originate?
A. From too much butane in the propane mixture