1. Practically all common refrigerants have approximately the same COP and power requirement. |
2. Ammonia mixes freely with lubricating oil and this helps lubrication of compressors. |
3. Dielectric strength of refrigerants is an important property in hermetically sealed compressor units. |
4. Leakage of ammonia can detected by halide torch method. |
A) 1, 2, and 4 are correct
B) 2 and 4 are correct
C) 1, 3 and 4 are correct
D) 1 and 3 are correct
Correct Answer: D
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