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Mechanic Refrigeration & Air Conditioning Practice Test: Commercial Compressor
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Mechanic Refrigeration & Air Conditioning Practice Test: Commercial Compressor
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25 Questions

1. The compressor in a commercial refrigeration system is used to convert a low pressure refrigerant in to which type of refrigerant?
2. The ratio of indicated HP to shaft HP is known as.......
3. The most efficient method of compressing air is to compress it.......
4. The other name of Ester oil is _______________.
5. The pressure of air at the beginning of the compression stroke is......atmospheric pressure
6. Ratio of compression is the ratio of.......
7. The volumetric efficiency of a compressor depends upon which factor?
8. Euler's equation is applicable for.......
9. Maximum work is done in compressing air when the compression is......
10. The refrigerant supplied to a compressor mostly-----
11. In hermetically sealed compressor unit ------
12. The reciprocating refrigerant compressor are very suitable for---
13. The other name of a female rotor use in screw compressor is _________
14. Compression efficiency is compared against.......
15. Mining industry usually employs following motive power.......
16. The simplest capacity control for a compressor is _________________.
17. Why the compressor tripped by the cut- out switch of an L.P
18. Which of the following compressor oil is artificial?
19. Volumetric efficiency of air compressors is of the order of.........
20. What is a struck up fault in a compressor?
21. The pressure at the inlet of refrigerant compressor is called ___.
22. The temperature in a multiple compressor is ________________of different point.
23. What is the output port of a screw compressor called?
24. 1 microfarad is equal to _____?
25. Which of the following component of mechanical refrigerant system is assumed to be heart of that system?

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