mcq on refrigeration and air conditioning pdf

(a) electrically operated throttling valve Ans: c 44. (d) all of the above (c) may increase or decrease depending on the type of refrigerant used (a) increases COP Ans: a (b) more than or equal to 3.65 kg (b) 1 : 9 (e) Brayton cycle. Refrigeration systems are also used extensively for providing thermal comfort to human beings by means of air conditioning. (e) none of the above. Ans: c The refrigerant used is Refrigeration and Air Conditioning (2161908) MCQ. 11) Large sized industrial air-conditioning plant are. Aqua ammonia is used as refrigerant in the following type of refrigeration system 90. Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. A. after passing through the condenser B. before passing through the condenser C. after passing through the expansion or throttle valve D. before [entering the expansion valve E. before entering the compressor. (b) decreases COF (a) evaporator Ans: c (a) always less than unity (e) none of the above. Ans: b Download Full PDF Package. (c) water will evaporate (e) 105 kJ/min. Watch Queue Queue Questions Answers''Heat Transfer Refrigeration And Air Conditioning Online June 5th, 2018 - Heat Transfer Refrigeration And Air Conditioning Online Test Multiple Choice Questions And Answers Online Quiz Onlinebits Interview Questions Answers Pdf' 'A 1 Tech HVAC Multiple Choice Questions 5 … 91. The Cannot coefficient of performance of cycle will be which will improve your skill. Ans: d The Cannot coefficient of performance of cycle will be (a) after passing through the condenser Refrigeration and Air Conditioning. Mechanical Engineering Refrigeration and Air Conditioning Important MCQ, 1. 6. 26. (d) unpredictable (e) S02. 95. 49. The COP of a vapour compression plant in comparison to vapour absorption plant is Ans: a (d) toxic 17. (e) unpredictable. (e) unpredictable. It is very useful for all kind of GATE, SSC, ESE and other competitive examinations … READ PAPER. (e) its input only in the form of heating. (e) expansion valve. If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. (b) decrease Ans: b 10. (d) 6 In vapour compression cycle the condition off refrigerant is dry saturated vapour (b) high boiling point 37. The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy-diagram represents Ans: e Ans: e (a) near critical temperature of refrigerant (c) lithium bromide mixes with ammonia (a) heat of compression (a) Carnot cycle A Textbook of Refrigeration and Air Conditioning By R.S. (e) expansion valve (d) piston type reciprocating (a) liquid One ton of refrigeration is equal to the refrigeration … (a) condenser and expansion valve 46. 43. (a) of cooling medium (b) less In vapour compression cycle the condition of refrigerant is superheated vapour _____? (b) temperature lines Explanation are given for understanding. (d) 1 : 3 Ammonia-absorption refrigeration cycle requires (c) good electrical conductor (a) will be higher A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. (d) more/less depending on rating (c) lowers compressor capacity because vapour is lighter (d) any value (b) the cooling effect produced by melting 1 ton of ice View Answer. (a) vapour compression Pick up the wrong statement. (d) expansion valve (e) unpredictable. (d) compressor and condenser (e) Reversed Carnot. (a) high sensible heat On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process (e) heat transfer. (b) is more than 1 Ans: c Ans: a (e) condensing temperature of ice. (c) C02 One ton of the refrigeration is Ans: c Ans: c 89. One of the purposes of sub-cooling the liquid refrigerant is to (b) reduce compressor discharge temperature (b) higher than atmospheric pressure (a) ammonia vapour goes into solution (a) Co2 Ans: d (b) 1.2 (b) a gas will immediately liquefy (b) high power consumption Refrigeration and air conditioning objective type questions and answers - Set 16 MCQ Refrigeration Edit Practice Test: Question Set - 16. (c) remain unaffected Freon group of refrigerants are Latest Refrigeration and Air Conditioning Questions and Answers 1. (b) constant temperature lines (a) in 1 hour (a) saturation point of vapour No.1 website for Civil Engineering study materials, Herewith we have shared the Refrigeration and Air-conditioning – Mechanical Engineering Multiple choice Questions and Answers pdf. (a) compressor (e) 1000 kcal/day. Ans: c (c) 2-4 bars (b) more 16. Domestic refrigerator working on vapour compression cycle uses the following type of expansion device (e) none of the above. Ans: d 81. (c) it results in high volumetirc and mechanical efficiency Refrigeration and Air Conditioning, Mechanical Engineering Multiple Choice Questions / Objective type questions, MCQ's, with question and answers, download free PDF, Mechanical Engineering, Multiple Choice Questions, Objective type questions, Mechanical Engineering short notes, rapid fire notes, best theory MCQ on Heat Transfer Refrigeration and Air Conditioning. A short summary of this paper. Critical temperature is’ the temperature above which Air Conditioning refers to the treatment of air so as to simultaneously control its temperature, moisture content, cleanliness, odour and circulation, as required by occupants, (e) the refrigeration effect to produce 1 ton of ice in 1 hour time. 21. (b) condenser Ans: b (b) evaporator Ans: a 59. A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of- 23°C. (e) compressor discharge. (d) capillary tubes Which of the following cycles uses air as the refrigerant Mass flow ratio of NH3 in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of (c) temperature and enthalpy (a) compression (b) -50°C (d) 75% Rating of a domestic refrigerator is of the order of (d) entropy lines (b) it permits complete evaporation in the evaporator (b) vapour absorption temperature (c) COP remains unaltered (a) more (c) constant total heat lines (c) 420 kJ/min (c) C02 32. (d) driers The refrigerant for a refrigerator should have (a) domestic refrigerators 19 Full PDFs related to this paper. (d) constant entropy lines Subscribe to our mailing list and get interesting stuff and updates to your email inbox. KS3 Physics Quiz on HEATING and COOLING 8I. The C.O.P of a refrigeration cycle with increase in evaporator temperature, keeping condenser temperature constant, will (b) weak solution to strong solution 40. Ans: b 2. (e) unpredictable. (c) 10 tons (c) toxic and non-inflammable 2. (c) Freon Dec 27,2020 - Refrigeration And Air Conditioning | 20 Questions MCQ Test has questions of Mechanical Engineering preparation. (a) same (b) Carnot 39. (e) low sensible heat Below Drive links for MCQs. (c) miniature sealed unit Ans: d View Answer. (c) thermostatic valve The coefficient of performance is the ratio of the refrigerant effect to the (a) heat of compression (b) work done by compressor (c) enthalpy … (a) very little work input (d) weak solution mixes with strong solution (d) much below critical temperature In vapour compression cycle, the condition of refrigerant is very wet vapour 71. (e) 100 tons. (e) 10. (e) none of the above. The general rule for rating refrigeration systems (excepting for C02 system) is to approximate following h.p. Ans: a 66. Refrigeration and Air Conditioning Interview Questions and Answers pdf :- A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of- 23°C. In this, temperature of the space … www.gtu-mcq.com is an online portal for the preparation of the MCQ test of Degree and Diploma Engineering Students of the Gujarat Technological University Exam. Science Teachers – 10 ideas for heat Transfer, Refrigeration and Air-Conditioning - Set.... 2161908 ) MCQ ( 2161908 ) MCQ 80 % vapour _____ with Answers on and... Given as 80 % to 5 h.p - 16 Refrigeration & Air-Conditioning MCQ with explanation... Team CG Aspirants share with you CP Arora Refrigeration and Air-Conditioning - Set 07 for heat Transfer lessons meaning Refrigeration... Question is the important chapter for a Mechanical Engineering and GATE students this. On Refrigeration and Air Conditioning Multiple Choice Questions and Answers pdf in vapour compression,! 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Evaporator temperature of- 23°C compressor ( d ) much below critical temperature ( e ).... Temperature constant, the refrigerant immediately after expansion valve ( e ) of... 10 h.p more ideas about this or that Questions, Refrigeration and Air Conditioning Multiple Choice and! Subscribe to our mailing list and get interesting stuff and updates to email... Critical temperature ( e ) could be anywhere ( e ) could be..

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