Tag: #solenoidvalve
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EK General Oct 2022 (Q7)
With reference to a vapor compression refrigeration plant (a) Explain the purpose of EACH of the following (i) Expansion valve (2) (ii) Room thermostat (2) (iii) High pressure cut out (2) (b) Explain why EACH of the following conditions are desirable (i) Superheating at the compression suction (2) (ii) Undercooling at the condenser outlet (2)…
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EK General Jul 2022 (Q7)
(a) Sketch a diagrammatic arrangement of a fully automatic provision refrigeration system incorporating a number of cold rooms. (5) (b) Explain the sequence of events from a demand for refrigerating effect in a cold room until the room has reached its desired temperature. (5) Reefer & A/C Jul 2022 (Q7)
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EK General Oct 2020 (Q8)
With reference to fixed machinery space fire fighting systems which use water in the form of fog or mist, explain EACH of the following: (a) how the fire is contained and extinguished; (4) (b) the importance of particle size and flow rate; (4) (c) the routine testing to be carried out. (2) Fire Oct 2020…
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EK General Dec 2019 (Q4)
(a) Describe TWO system of priming centrifugal pumps (6) (b) List the advantages of EACH of the priming methods described in part (a) (4) Pumps & system Dec 2019 (Q4)
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EK General Dec 2018 (Q6)
With reference to a vapor compression refrigeration plant (a) Explain the purpose of EACH of the following (i) Expansion valve (2) (ii) Room thermostat (2) (iii) High pressure cut out (2) (b) Explain why EACH of the following conditions are desirable (i) Superheating at the compression suction (2) (ii) Undercooling at the condenser outlet (2)…
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EK General Oct 2017 (Q5)
(a) Describe TWO system of priming centrifugal pumps (6) (b) List the advantages of EACH of the priming methods described in part (a) (4) Pumps & system Oct 2017 (Q5)
UKM Tuticorin 