Chapter 16 Flashcards
1
Q
What is the classification of a refrigerant that is highly flammable but exhibits low toxicity?
A. A1
B. A3
C. B2
D. B3
A
B
2
Q
What is the boiling temperature of R-717 (ammonia) at atmospheric conditions?
A. -47.6°C (117.68°F)
B. -33.3°C (-27.94°F)
C. -26.1°C (-14.98°F)
D. -40.8°C (-41.44°F)
A
B
3
Q
What are the factors that affect the leakage tendency of a refrigerant?
a. Operating pressure
b. Density
c. Molecular mass
d. All of the above
A
D
4
Q
The use of oil miscible refrigerants.
A. Dissolves most of the oil in the system components.
B. Returns the oil to the compressor.
C. Avoids problems due to oil blockage.
D. All of the above.
A
D
