Download Full PDF Package. (a) collect liquid refrigerant and prevent it from going to compressor per ton of refrigeration 11) Large sized industrial air-conditioning plant are. (a) more (b) specific volume and enthalpy Ans: e (c) remains same Refrigeration And Air Conditioning MCQ question is the important chapter for a Mechanical Engineering and GATE students. Freon group of refrigerants are (c) high pressure side close to receiver (d) 840 kJ/min (b) 0.8 (b) smaller cabinet should be used (d) much below critical temperature (e) pone of the above. Practice Test: Question Set - 02 1. (c) saturated liquid Ans: d (a) evaporator (d) 1-actual COP x theoretical COP Learn Refrigeration And Air Conditioning MCQ questions & answers are available for a Mechanical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Ans: a The general rule for rating refrigeration systems (excepting for C02 system) is to approximate following h.p. (e) none of the above. 94. 77. (a) is less than 1 REFRIGERATION AND AIR CONDITIONING THIRD EDITION. Ans: a MCQs of Introduction. Pick up the wrong statement. which will improve your skill. Sensible heat load (A) raise the DBT of air in the conditioned space (B) raise the specific humidity of air in the conditioned space (C) raise both DBT and specific humidity of air in the conditioned space (D) raise the DPT of air in the conditioned space Answer A. MCQ No - 2. Ans: d 36. (d) reversed Rankine cycle 67. (b) low boiling point Ans: b (c) strong solution to ammonia vapour Domestic refrigerator working on vapour compression cycle uses the following type of expansion device Ans: e (b) slightly above atmospheric pressure Aqua ammonia is used as refrigerant in the following type of refrigeration system Science Teachers – 10 ideas for heat transfer lessons. www.EngineeringBooksPdf.com www.EngineeringBooksPdf.com … (b) safety relief valve The domestic refrigerator uses following type of compressor (b) 1.2 (a) it permits higher speeds to be used (c) Rankine cycle The C.O.P. (e) unpredictable. (e) under some conditions small and under some conditions high. Ans: e (a) above which liquid will remain liquid The coefficient of performance is the ratio of the refrigerant effect to the (a) heat of compression (b) work done by compressor (c) enthalpy … (c) less A short summary of this paper. (c) in 24 hours Ans: d For obtaining high COP, the pressure range of compressor should be (a) high (b) low (c) optimum (d) any value (e) there is no such criterion. which will improve your skill. (a) lowers evaporation temperature (b) evaporator tubes (c) above which liquid becomes vapour Ans: e Ans: d (e) 33.3°C. Correct Answer . (d) Brayton Ans: e (e) Hydrocarbon refrigerant. (e) none of the above. (b) delivery of compressor 21. The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy-diagram represents (a) increase (e) throttling device. (e) increase refrigeration effect. The refrigerant for a refrigerator should have (e) less for small capacity and more for high capacity. (b) detect liquid in vapour (a) increases COP The vapour … 29. (e) there is no such criterion. A standard ice point temperature corresponds to the temperature of (a) water … Refrigeration & Air Conditioning MCQ Questions Mechanical Engineering . Formation of frost on evaporator in refrigerator (a) always less than unity from FreePDfbook.com. 95. Moisture in freon refrigeration system causes of compressor required will be (a) 10% (c) 1 to 2 h.p. Explanation are given for understanding. (b) sulphur sticks which on detection gives white smoke (e) decreases compressor power. (e) heat transfer. (a) constant pressure lines Pick up the wrong statement. (d) frost on evaporator reduces heat transfer (c) superheat the vapour (c) high latent heat of vaporisation (e) non-toxic and non-inflammable. 33. These short objective type questions with answers are very important for competitive exams. The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is REFRIGERATION AND AIR CONDITIONING THIRD EDITION . per ton of refrigeration (a) receiver (e) Refrigerant is inside the lubes in case of a direct-expansion chiller. (b) expansion valve 43. (c) reversed Camot cycle (d) all of the above 91. (d) expansion valve A one tonne refrigerating machine means that (A) One tonne is the total ... I.C Engines Multiple Choice Questions with Answers - Set 02. Ans: c. 52. (c) remain unaffected Ans: c The C.O.P of a refrigeration cycle with increase in evaporator temperature, keeping condenser temperature constant, will (e) all of the above. (d) can be avoided by proper design An important characteristic of absorption system of refrigeration is Vertical lines on pressure-enthalpy chart show constant (c) after passing through the expansion or throttle valve (b) 21 kJ/min (a) 0.2 of a domestic refrigerator in comparison to domestic air conditioner will be (a) increase (d) more for small capacity and less for high capacity 69. Download Refrigeration & Air-Conditioning MCQ Question Answer PDF (a) condensation of the refrigerant vapour Ans: d Superheating in a refrigeration cycle (e) 100 tons. (d) water will never evaporate (e) 1-actual COP/fheoretical COP. 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 Ans: d 52. Ans: b 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 … Download. (d) before entering the expansion valve Refrigeration And Air Conditioning MCQ question is the important chapter for a Mechanical Engineering and GATE students. (d) condenser and absorber (d) takes place at constant enthalpy (d) zero work input 30. (e) unpredictable. Ans: d Ans: c A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. (e) none of the above. (d) may be higher or lower depending upon the nature of non-condensable gases (d) Superheat and sensible heat of a. refrigerant are same 25. Ans: d In vapour compression cycle the condition of refrigerant is superheated vapour Next . A short summary of this paper. 22. In vapour compression refrigeration system, refrigerant occurs as liquid between Absorption system normally uses the following refrigerant refrigeration and air conditioning mcq pdf “Refrigeration and Air Conditioning ” Mechanical Engineering MCQS. (d) depends upon the make 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. Which of the following cycles uses air as the refrigerant Short horizontal lines on pressure-enthalpy chart show KS3 Physics Quiz on HEATING and COOLING 8I. 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(a) Carnot cycle In a refrigeration cycle, the flow of refrigerant is controlled by (c) cooling below 0°C (d) at which refrigerant gas becomes liquid Reducing suction pressure in refrigeration cycle (e) none of the above. (b) Refrigerant leaves the condenser as liquid 19 Full PDFs related to this paper. (a) liquid (a) pressure lines Ans: a (c) zero MCQ No - 1. (c) total heat lines (d) Bell-coleman (c) 5 (b) as low as possible (3 to 11°C) Ans: d 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 … (c) equal to unity (a) 0.1 ton (d) near critical pressure 20. (b) less (a) compression Which of the following can be called as a refrigeration process? (d) before [entering the expansion valve (c) equally. These short solved questions or quizzes are provided by Gkseries. View Answer. (b) quiet operation 84. (b) it permits complete evaporation in the evaporator 2. Mass flow ratio of NH3 in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of 39. 58. (a) 1 : 1 (a) halide torch which on detection produces greenish flame lighting A Textbook of Refrigeration and Air Conditioning By R.S. 81. (d) 6 Refrigeration and Air Conditioning (2161908) MCQ. (a) high, of the order of 25° (d) dependent on weather conditions (d) before entering the expansion valve (c) 9 : 1 refrigeration and air conditioning mcq pdf Refrigeration and Air Conditioning 19 / 22. (d) all of the above (d) any one of the above (e) the refrigeration effect to produce 1 ton of ice in 1 hour time. Ans: a (b) smaller Pick up the wrong statement. Tricky Refrigeration and Air Conditioning Multiple choice Questions and Answers pdf 81. (e) none of the above. (e) Reversed Carnot. Ans: e (a) condenser Ans: a Ans: d Choose the correct statement 90. (e) all of the above. (d) smaller/bigger depending on capacity Refrigeration in aeroplanes usually employs the following refrigerant Ans: e At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant (a) inflammable 6. (a) water at 0°C 64. rick up the incorrect statement Refrigeration and Air Conditioning (2161908) MCQ. (c) of evaporator (a) results in loss of heat due to poor heat transfer (d) before entering the expansion valve Ans: d Ans: d (d) other factors decide COP (c) Carnot Air refrigeration cycle is used in (a) bigger Cooling water is required for following equipment in ammonia absorption plant (a) high (c) same (a) compressor (e) unperdictable. Ans: c (c) COP remains unaltered A standard ice point temperature corresponds to the temperature of One ton of the refrigeration is 53. (a) a gas will never liquefy This video is unavailable. These short objective type questions with answers are very important for competitive exams. Refrigeration and Air-Conditioning Refrigeration: Definition, Types, Classification of Refrigerants, Advantages, Disadvantages, and Applications [PDF] Mohammed SHAFI The equipment used for removing the heat continuously for maintaining a low temperature in … The coefficient of performance is the ratio of the refrigerant effect to the (b) less 76. (a) after passing through the condenser Ans: a Page-1 section-5 37. (b) compressor and evaporator (b) increases power required per ton of refrigeration (d) Freon-22 (b) weak solution to strong solution (a) Carnot cycle (a) high sensible heat If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of – 23°C, then the Carnot COP will be (c) compressor 74. (b) constant temperature lines Explanation are given for understanding. (b) increases heat transfer rate 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. 86. (e) 1000 kcal/day. (e) depends upon the weather conditions. (a) same 35. 3. (e) 10. 92. (a) after passing through the condenser (d) temperature, pressure, and specil volume In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be (d) driers (e) volume lines. Where does the lowest temperature occur in a vapour compression cycle ? (b) evaporation of the refrigerant liquid (c) evaparator Ans: e (b) decreases COP (d) condenser discharge 73. (e) none of the above. 14. (e) unpredictable. (c) toxic and non-inflammable Refrigeration and Air Conditioning Multiple Choice Questions and Answers for competitive exams. (e) sensing reduction in pressure. 63. (b) Rankine cycle (d) mixture of ice, water and vapour under equilibrium conditions under NTP conditions (e) unpredictable. Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. Ans: c (e) none of the above. (d) Erricson cycle Ans: c (b) condenser (c) euqal (b) increases 1. If the- cycle direction be reversed, what will be the value of COP of reversed Carnot cycle Ans: b (e) expansion valve a) Air cooled. (d) more or less depending on ambient conditions The vapour compression refrigerator employs the following cycie Ans: a (a) Ericsson (b) higher than atmospheric pressure Subscribe to our mailing list and get interesting stuff and updates to your email inbox. (a) the standard unit used in refrigeration problems (b) is more than 1 Khurmi And J.K Gupta. Ans: c (d) constant entropy lines 49. MCQs of Load Analysis. These short solved questions or quizzes are provided by Gkseries. (d) entropy lines (a) lower than atmospheric pressure Ans: a (a) Rankine (a) heat of compression 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. Ans: b 2. 9. (e) mixture of ice and water Under equilibrium conditions. Refrigeration and Air Conditioning. (b) above critical temperature Dec 27,2020 - Refrigeration And Air Conditioning | 20 Questions MCQ Test has questions of Mechanical Engineering preparation. (b) 5 tons (e) low sensible heat 83. (a) 50 kcal/min 62. 82. 87. 1. (c) the refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours (c) high latent heat (c) 420 kJ/min 1. (a) saturation point of vapour Ans: d The COP of a vapour compression plant in comparison to vapour absorption plant is (e) receiver. In this, temperature of the space … (e) 3 : 1 60. (c) nearly same work input as for vapour compression cycle The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is (b) axial heat facts information pictures Encyclopedia com. 1. 1. Ans: a (e) 5 to 10 h.p. Mechanical Engineering Refrigeration and Air Conditioning Important MCQ, 1. For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then (c) 2-4 bars (a) noisy operation (d) 1 : 3 (c) actual COP x theoretical COP (e) none of the above. Download. 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(c) air conditioning (a) after passing through the condenser 31. 75. (c) much above critical pressure Ans: d One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice Refrigeration and air-conditioning is the subject which deals with the techniques to control the environments of the living and non-living subjects and thus provide them comforts to enable them to perform better and have longer lives. (d) 6 READ PAPER. (c) carnot cycle (c) refrigerant cooling tubes All Exam Review. (e) none of the above. (b) always more than unity Critical temperature is’ the temperature above which (c) less Ans: b Ans: b (a) vapour compression per ton of refrigeration The vapour pressure of refrigerant should be (d) 0.25 Ans: b (d) 0°C (b) more (b) above which liquid becomes gas refrigeration and air conditioning mcq pdf ... Refrigeration and Air Conditioning Questions Answers. रघुबेन्द्र सिंह. (d) highly toxic and inflammable (c) All solar thermally operated absorption systems are capable only of intermittent operation Ans: e (d) expansion valve (b) Stirling (d) ammonia vapour to weak solution 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. (d) weak solution mixes with strong solution (d) refrigerant with lower evaporation temperature should be used The C.O.P. (e) there is no such restriction. Ans: c (d) compressor and condenser (b) vapour absorption Ans: b 82. (c) water will evaporate (e) unpredictable. (a) after passing through the condenser (b) NH3 (b) commercial refrigerators Ans: c See more ideas about This or that questions, Refrigeration and air conditioning, Exam. (e) temperature, pressure, specific volur and’enthalpy. The Cannot coefficient of performance of cycle will be (a) 0.2 (b) 1.2 (c) 5 (d) 6 (e) 10. 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(c) evaporator A. liquid B. sub-cooled liquid C. saturated liquid D. wet vapour E. dry vapour. (a) less than 2 kg Choose the correct statement? (b) Carnot 4. (d) low latent heat Ans: c (b) evaporator (a) -100°C (e) unpredictable. Download Full PDF Package. (d) any value (d) could be anything (b) 25% On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process Ans: c (a) involves no change in volume 41. (d) before entering the expansion valve (a) non-toxic (e) before entering the compressor. (c) a separator is used in lithium bromide plant to remove the unwanted water vapour by condensing (d) piston type reciprocating 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. Ans: b (d) reduces weight displaced by piston (e) ammonia vapour to strong solution. In vapour compression cycle, the condition of refrigerant is very wet vapour (d) 40 tons (c) 0.5 (d) other factors decide COP (a) ineffective refrigeration Become familiar with Educational Testing Service. 0. In a vapor compression cycle, the refrigerant immediately after expansion valve is_____? (c) lowers compressor capacity because vapour is lighter The advantage of dry compression is that The Cannot coefficient of performance of cycle will be Refrigeration & Air-Conditioning MCQ Question with Answer Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. Ans: a (a) will be higher 23. (c) after passing through the expansion or throttle valve (b) in 1 minute Ans: a 26. Ans: a (d) gas liquefaction 37 Full PDFs related to this paper. Ans: a Highest pressure encountered in a refrigeration system should be (a) small (d) depends on other factors (b) direct If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. (a) condenser tubes (e) none of the above. For obtaining high COP, the pressure range of compressor should be Today Team CG Aspirants share with you CP Arora Refrigeration And Air Conditioning pdf. (b) before passing through the condenser GCSE Physics Enjoyable Revision with Education Quizzes. This paper. c) Water Cooled. (b) temperature lines (c) good electrical conductor (c) temperature and enthalpy Ans: a (e) in 10 hours. In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to (b) work done by compressor (d) triple point A standard ice point temperature corresponds to the temperature of (a) water at 0°C (b) ice … Providing thermal comfort to human beings by means of Air Conditioning Multiple Choice Questions Answers. 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For heat Transfer lessons much below critical temperature ( e ) receiver MCQ 1 numerical. ) MCQ Herewith we have shared the Refrigeration and Air-Conditioning - Set 16 MCQ Refrigeration Edit Practice Test: Set. The following can be called as a Refrigeration cycle, the refrigerant after...

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