15. In S.I. unit, one ton of refrigeration is equal to
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16. The vapour compression refrigerator employs the following cycle
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17. Allowable pressure on high-pressure side or ammonia absorption system is of the order of
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18. The moisture in a refrigerant is removed by
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19. The condensing pressure due to the' presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases,
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20. Critical pressure of a liquid is the pressure 42) above which liquid will remain liquid
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21. Criti5a1 temperature is the temperature above which
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