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The refrigerant used in vapour absorption systems is a) steam b) pure water c) freon d) lithium bromide . 21. Li – Br water absorption refrigeration systems have a COP in the range of a) 0.4 – 0.5 b) 0.65 – 0.70 c) 0.75 – 0.80 d) none of the above ... The compression ratio in diesel engines is in the range of a) 5:1 to 10:1 b) 10:1 to ...
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