It is very useful for all kind of GATE, SSC, ESE and other competitive examinations The boiling point of ammonia is (a) actual COP/fheoretical COP (c) actual COP x theoretical COP Online Practice Test on Refrigeration and Air-Conditioning - Set 06 MCQ Refrigeration Edit Practice Test: Question Set - 06. (e) ammonia. Absorption system normally uses the following refrigerant Ans: d per ton of refrigeration (c) Freon-22 (a) condenser (c) enthalpy increase in compressor One ton of refrigeration is equal to the refrigeration … Refrigeration and Air Conditioning, RAC Questions For placement and exam preparations, MCQs, Mock tests, Engineering Class handwritten notes, exam notes, previous year questions, PDF free download 31. (b) decrease 4. (c) Precooling and subcooling bf refrigerant are same Ans: a (e) unpredictable. Download Full PDF Package. 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. 65. (c) C02 (b) non-inflammable READ PAPER. 19 Full PDFs related to this paper. REFRIGERATION AND AIR CONDITIONING THIRD EDITION . 48. 11) Large sized industrial air-conditioning plant are. (a) 0.1 ton (d) could be anything Ans: a c) Water Cooled. (d) expansion valve (b) before passing through the condenser (e) 1000 kcal/day. (a) after passing through the condenser Ans: b (d) S02 93. 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. (b) a gas will immediately liquefy (a) evaporator (b) ice at – 4°C (c) evaporator (c) lithium bromide mixes with ammonia (b) less (e) none of the above. The advantage of dry compression is that A Textbook of Refrigeration and Air Conditioning By R.S. (c) freezing automatic regulating valve A short summary of this paper. (e) throttling device. In vapour compression cycle, the condition of refrigerant is very wet vapour The C.O.P of a refrigeration cycle with increase in evaporator temperature, keeping condenser temperature constant, will (b) smaller cabinet should be used (e) none of the above. 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(b) less Ans: c (c) takes place at constant entropy (d) large latent heat (e) depends upon the weather conditions. (b) decrease (e) none of the above. (c) above which liquid becomes vapour 58. Ans: e Ans: a (e) 5 to 10 h.p. (b) Stirling An important characteristic of absorption system of refrigeration is (e) none of the above. Ans: b (a) Ericsson per ton of refrigeration (b) in 1 minute Ans: d (a) halide torch which on detection produces greenish flame lighting READ PAPER. 57. (e) expansion valve 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. (c) high latent heat (e) none of the above. Ans: b (a) increase (b) always more than unity The C.O.P. Ans: a (e) 33.3°C. (a) after passing through the condenser (d) expansion valve. REFRIGERATION AND AIR CONDITIONING THIRD EDITION. A refrigerant should have (a) Tow specific heat of liquid (b) high boiling point (c) high latent heat of vaporisation (d) higher critical temperature (e) low specific volume of vapour. (a) high Ans: b 2. Ans: b View Answer. (a) always less than unity (e) critical point. (d) takes place at constant enthalpy (b) lithium bromide plant can’t operate below 0°C (d) more/less depending on rating 11. A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. (d) 80 kcal/hr Ans: a 51. Ans: e (e) takes place at constant pressure. (a) Co2 (a) condenser and expansion valve 54. Ans: a (a) pressure lines (b) will be lower Ans: e 68 Ammonia is (d) 5-6 bars (b) 1 : 9 Explanation are given for understanding. Ans: a Aqua ammonia is used as refrigerant in the following type of refrigeration system (a) inflammable (a) receiver Dec 27,2020 - Refrigeration And Air Conditioning | 20 Questions MCQ Test has questions of Mechanical Engineering preparation. (e) Reversed Carnot. (d) gas liquefaction (a) same (a) 0.2 (e) expansion valve. (d) condenser discharge 7.The relative coefficient of performance is 55. In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is (e) unpredictable. (e) could be anywhere. (b) Rankine cycle (d) any value Refrigeration & Air-Conditioning MCQ Question with Answer Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. (a) saturation point of vapour (b) condenser (c) evaporator (c) 0.5 (a) noisy operation per ton of refrigeration (b) as low as possible (3 to 11°C) A standard ice point temperature corresponds to the temperature of (a) water … (c) is immaterial (b) vapour absorption (b) slightly above atmospheric pressure (a) Freon-12 (b) higher than atmospheric pressure (d) Air (e) before entering the compressor. (d) unpredictable 39. Ans: d (d) Superheat and sensible heat of a. refrigerant are same (b) NH3 (c) evaparator (b) 25% Ans: e A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of- 23°C. (c) high latent heat of vaporisation (d) weak solution mixes with strong solution In a refrigeration cycle, the flow of refrigerant is controlled by Ans: b Clapeyron equation is a relation between Ans: b The refrigerant for a refrigerator should have (e) all of the above. MCQ No - 1. 67. (b) more than or equal to 3.65 kg 1. ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) ... Refrigeration and Air Conditioning (2161908) MCQ. (d) 6 Mass flow ratio of NH3 in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of Ans: a (e) none of the above. Ans: a (d) metering of the refrigerant liquid Refrigeration And Air Conditioning MCQ question is the important chapter for a Mechanical Engineering and GATE students. Ans: d Pick up the wrong statement. Ans: a (a) water at 0°C (b) axial In S.J. Ans: d 82. (d) corrosion of whole system www.EngineeringBooksPdf.com www.EngineeringBooksPdf.com … Rating Refrigeration systems ( excepting for C02 system ) is to approximate following h.p download in Refrigeration! Vapour E. dry vapour constant, the refrigerant immediately after expansion valve is_____ ) 1 to 2 h.p vapour! Answers for competitive exams ) receiver Refrigeration ( c ) compressor ( d ) valve. 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