engineering recuitment HPCL Engineer Mock Test 2024 Refrigeration and Air Conditioning Refrigeration Cycles and Devices
Consider the following statements:
1. The operation of a refrigerator unit at more than one temperature can be accomplished by using different throttling valves and a separate compressor for each ‘temperature range’.
2. The refrigerated space must be maintained above the ice point to prevent freezing.
3. In domestic refrigerators, the refrigerant is throttled to a higher pressure in the freezer followed by full expansion in the refrigerated space.
Which of the above statements are correct?1
1 and 2 only
2
1 and 3 only
3
2 and 3 only
4
1, 2 and 3