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Q6. With reference to a domestic refrigeration plant, state TWO causes of EACH of the following

conditions, stating how EACH cause may be rectified:

(a) excessive pressure; (2)    (b) low pressure at evaporator suction; (2)

(c) compressor cycling; (2)   (d) compressor running for long periods but not lowering the temperature in the cold rooms(2)              (e) compressor operating noisily. (2)