(b) high (b) before passing through the condenser 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 … 6. 74. Ans: e Ans: a Ammonia-absorption refrigeration cycle requires (c) actual COP x theoretical COP 45. (b) of freezing zone 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, Ans: d (c) 0.5 (c) toxic and non-inflammable Ans: d 18. (a) domestic refrigerators A. liquid B. sub-cooled liquid C. saturated liquid D. wet vapour E. dry vapour. Ans: c Ans: e (c) Carnot (c) 2-4 bars Ans: b An important characteristic of absorption system of refrigeration is 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. (c) it results in high volumetirc and mechanical efficiency (c) equal Mass flow ratio of NH3 in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of (c) strong solution to ammonia vapour 1. (a) increases COP (c) C02 95. Pick up the wrong statement. 81. (c) COP remains unaltered (c) after passing through the expansion or throttle valve In vapour compression cycle the condition of refrigerant is superheated vapour (d) compressor and condenser (a) lowers evaporation temperature (e) in 10 hours. (e) ammonia. Ans: a (a) Rankine (b) ammonia vapour is driven out of solution 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 … 88. a) Air cooled. (a) very little work input (c) absorber (b) expansion valve (e) before entering the compressor.. (b) 25% Refrigeration and Air Conditioning. Ans: c b) Ground cooled. (d) capillary tubes (a) condenser tubes (d) 5-6 bars (d) 2 to 5 h.p. (c) C02 (b) decreases COP (a) it permits higher speeds to be used (d) electrolux refrigerator Ans: d These short solved questions or quizzes are provided by Gkseries. The higher temperature in vapour compression cycle occurs at (b) smaller cabinet should be used (e) unpredictable. (c) may increase or decrease depending on the type of refrigerant used (c) optimum 8. Explanation are given for understanding. (d) collect vapours (b) delivery of compressor (b) before passing through the condensei 26. Allowable pressure on high-pressure side or ammonia absorption system is of the order of Refrigeration Literal meaning of refrigeration is the production of cold confinement relative to its surroundings. which will improve your skill. The vapour … (d) concentration of solution coming out of lithium bromide generator is more in comparison to that entering the generator Ans: a (d) zero work input (b) low boiling point (e) none of the above. On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process 65. 38. (b) axial (b) commercial refrigerators A short summary of this paper. (a) heat of compression Refrigeration in aeroplanes usually employs the following refrigerant (a) more (e) unperdictable. (b) 0.8 Become familiar with Educational Testing Service. Vertical lines on pressure-enthalpy chart show constant (b) before passing through the condenser Ans: b; A standard ice point temperature corresponds to the … Download Refrigeration & Air-Conditioning MCQ Question Answer PDF « Refrigeration & Air-Conditioning MCQ Question with Answer Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. 0. On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process (a) involves no change in volume (b) takes place at constant temperature (c) takes place at constant entropy (d) takes place at constant enthalpy (e) takes … 52. (d) above which liquid becomes solid (d) reduces weight displaced by piston (e) unpredictable. (a) atmospheric pressure (e) Hydrocarbon refrigerant. (b) takes place at constant temperature d) Ammonia cooled. from FreePDfbook.com. (c) high latent heat Clapeyron equation is applicable for registration at (b) theoretical COP/actual COP (b) it permits complete evaporation in the evaporator 49. 27. (c) zero Ans: d (b) before passing through the condenser (a) 0.1 to 0.5 h.p. (a) 0.2 For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then (a) temperature, pressure and enthalpy In vapour compression cycle, the conditii of refrigerant is saturated liquid 43. Refrigeration & Air-Conditioning MCQ Question with Answer Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) ... Refrigeration and Air Conditioning (2161908) MCQ. (a) compressor (e) volume lines. It is very useful for all kind of GATE, SSC, ESE and other competitive examinations The bank of tubes at the back of domestic refrigerator are 71. of a domestic refrigerator in comparison to domestic air conditioner will be (c) total heat lines 47. These short objective type questions with answers are very important for competitive exams. (e) S02. Dec 27,2020 - Refrigeration And Air Conditioning | 20 Questions MCQ Test has questions of Mechanical Engineering preparation. In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be (c) after passing through the expansion or thiottle valve (a) small (d) capillary tube Aqua ammonia is used as refrigerant in the following type of refrigeration system Ans: a (c) after passing through the expansion throttle valve (c) less Highest temperature encountered in refrigeration cycle should be Free download in PDF Refrigeration and Air Conditioning Multiple Choice Questions and Answers for competitive exams. (b) manually operated valve (d) any value (d) 0.25 Estimation of … (a) more 94. 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. (d) all of the above (b) 1.2 (a) 1 : 1 (b) high total heat (a) bigger cabinet should be used 86. (d) could be anything In this, temperature of the space … (e) critical point. Science Teachers – 10 ideas for heat transfer lessons. The refrigerant for a refrigerator should have (a) after passing through the condenser (e) Reversed Carnot. 87. Ans: a 1. Ans: d (b) evaporator In a vapor compression cycle, the refrigerant immediately after expansion valve is_____? Refrigeration and Air Conditioning (2161908) MCQ. 61. (e) none of the above. Ans: e Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07 MCQ Refrigeration Edit Practice Test: Question Set - 07. (d) smaller/bigger depending on capacity Page-1 section-5 Ans: c (b) less (c) equal to unity Ans: a (e) refrigerant is circulated in a refrigeration system to transfer heat. (c) carnot cycle (c) refrigerant cooling tubes MCQ No - 1. 46. Ans: a 79. Explanation are given for understanding. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will 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) takes place at constant enthalpy (c) will remain unaffected june 6th, 2018 - fri 01 jun 2018 06 58 00 gmt refrigeration multiple choice questions pdf refrigeration and air conditioning multiple choice questions 1 pick up the wrong' '95 TOP Refrigeration And Air Conditioning Mechanical February 28th, 2017 - 95 TOP Refrigeration And Air Conditioning Mechanical Efficiency of a Cornot engine is given as 80%. (c) is immaterial (c) evaporator Which of the following cycles uses air as the refrigerant (a) centrifugal The vapour pressure of refrigerant should be (d) water will never evaporate Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. Ans: b (c) non-inflammable and toxic (e) low specific volume of vapour. Refrigeration and Air Conditioning. Download Full PDF Package. d) Ammonia cooled. The coefficient of performance is the ratio of the refrigerant effect to the For obtaining high COP, the pressure range of compressor should be (e) at which all the three phases exist together. Ans: c (d) higher critical temperature 34. (a) Ammonia Ans: e (d) expansion valve. (b) more Ans: a (c) equally. (b) safety relief valve (d) more/less depending on size of plant REFRIGERATION AND AIR CONDITIONING THIRD EDITION . (e) before entering the compressor. Ans: b Correct Answer . (d) any value (e) could be anywhere. 1. Ans: d One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice (d) depends upon the make (a) increase (c) less (c) 420 kJ/min Subscribe to our mailing list and get interesting stuff and updates to your email inbox. 24. For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference (t m) for parallel flow is _____ that for counter flow. (e) breakdown of refrigerant. 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. (e) none of the above. (d) Brine (a) strong solution to weak solution (c) All solar thermally operated absorption systems are capable only of intermittent operation (e) 10. 76. Ans: d (a) same Ans: c One ton of refrigeration is equal to the refrigeration … (a) less than 2 kg The general rule for rating refrigeration systems (excepting for C02 system) is to approximate following h.p. per ton of refrigeration Refrigeration and Air Conditioning Multiple Choice Questions and Answers for competitive exams. 4. (e) such a cycle does not exist. Pick up the wrong statement. MCQs of Load Analysis. (b) compressor and evaporator (b) sub-cooled liquid (c) dehumidifier 66. (d) reversed Rankine cycle (a) pressure lines 12. Under-cooling in a refrigeration cycle Free stuff of Refrigeration & Air Conditioning Mcq, Refrigeration And Air Conditioning Question Bank, Refrigeration And Air Conditioning Old Question Papers, Basic Refrigeration Test Questions, Modern Refrigeration And Air Conditioning Pdf Download, Refrigeration And Air Conditioning 2 Marks Questions in Urdu hindi and English students . Save my name, email, and website in this browser for the next time I comment. Refrigeration and Air Conditioning Questions Answers. (b) non-inflammable The C.O.P. 0. The COP of a domestic refrigerator (b) high power consumption (a) constant pressure lines (a) high sensible heat (e) none of the above. (d) ammonia vapour to weak solution 22. (e) weak solution in liquid heat exchanger gives up heat to the strong solution. A standard ice point temperature corresponds to the temperature of 64. rick up the incorrect statement (d) constant entropy lines 13. 78. The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is Most of the domestic refrigerators work on the following refrigeration system (e) ammonia vapour to strong solution. (b) reduce compressor discharge temperature The boiling point of ammonia is Absorption system normally uses the following refrigerant The leaks in a refrigeration system using Freon are detected by (b) Reversed Carnot cycle c) Water Cooled. (b) will be lower Next . Ans: a 75. 35. (e) none of the above. In a vapour compression cycle, the refrigerant immediately after expansion valve is The Cannot coefficient of performance of cycle will be Ans: a Ans: e (b) quiet operation Explanation are given for understanding. Refrigeration systems are also used extensively for providing thermal comfort to human beings by means of air conditioning. Ans: b Presence of moisture in a refrigerant affects the working of (b) 1 : 9 (e) unpredictable. Which of the following can be called as a refrigeration process? Ans: b This book is best for understanding the proper working and\efficincy calculating of the refrigerator in numerical based. per ton of refrigeration Ans: a. Refrigeration and Air-conditioning – Mechanical MCQs PDF Herewith we have shared the Refrigeration and Air-conditioning – Mechanical Engineering Multiple choice Questions and Answers pdf. 41. Ans: e (a) saturation point of vapour Ans: b (c) Rankine cycle The domestic refrigerator uses following type of compressor (e) Brayton cycle. 11) Large sized industrial air-conditioning plant are. (a) same (c) evaparator (d) can be avoided by proper design 1. A refrigerant should have (a) electrically operated throttling valve 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. (e) none of the above. 72. Rating of a domestic refrigerator is of the order of (e) non-toxic and non-inflammable. (b) sulphur sticks which on detection gives white smoke 28. (b) much below critical pressure Accumulators should have adequate volume to store refrigerant charge at least (a) liquid This paper. (c) cooling below 0°C In vapour compression refrigeration system, refrigerant occurs as liquid between (a) ineffective refrigeration (a) compressor (a) after passing through the condenser (e) heat transfer. which will improve your skill. 55. (e) sensing reduction in pressure. (b) If operating temperature of system is low, then refrigerant with low boiling point should be used (b) evaporator tubes (b) increases power required per ton of refrigeration 2. The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P. (c) euqal (d) piston type reciprocating 19 Full PDFs related to this paper. (b) saturation point of liquid Ans: a Ans: c (b) 50 kcal/kr (c) Reversed Rankine (e) decreases compressor power. (e) takes place at constant pressure. 39. Ans: c The value of COP in vapour compression cycle is usually 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. Choose the correct statement? (b) Rankine cycle Choose the correct statement Refrigeration & Air Conditioning MCQ Questions Mechanical Engineering . (e) unpredictable. Ans: b 73. (e) none of the above. (c) temperature and enthalpy 5. (d) gas liquefaction Hello Engineers are you searching for the free download link of Refrigeration And Air Conditioning C P Arora Full Book Pdf then you reach the right place. Johana C Siliwire. (d) at which refrigerant gas becomes liquid (c) Freon 7.The relative coefficient of performance is (b) decrease (d) low pressure side near receiver (e) 5 to 10 h.p. Formation of frost on evaporator in refrigerator (d) any one of the above Ans: b 42. (a) lower than atmospheric pressure Ans: a Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. Domestic refrigerator working on vapour compression cycle uses the following type of expansion device (d) remain unaffected (a) non-toxic A Textbook of Refrigeration and Air Conditioning By R.S. (b) constant temperature lines heat facts information pictures Encyclopedia com. (e) none of the above. Ans: e (b) 0.5 to 0.8 h.p. (a) condenser 16. 23. Refrigeration and Air Conditioning (2161908) MCQ. A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of- 23°C. (d) highly toxic and inflammable रघुबेन्द्र सिंह. b) Ground cooled. refrigeration and air conditioning mcq pdf ... Refrigeration and Air Conditioning Questions Answers. (b) a gas will immediately liquefy In vapour compression cycle the condition off refrigerant is dry saturated vapour Choose the wrong statement (a) increases COP (c) high pressure side close to receiver (d) toxic Ans: c (c) 80 kcal/min per ton refrigeration. (d) smelling Mechanical Engineering Refrigeration and Air Conditioning Important MCQ, 1. (e) its input only in the form of heating. One ton refrigeratiqn corresponds to (a) 50 kcal/min (d) corrosion of whole system Refrigeration & Air Conditioning MCQ Questions Mechanical Engineering . (b) lithium bromide plant can’t operate below 0°C (e) dry vapour. Ans: b This test is Rated positive by 94% students preparing for Mechanical Engineering.This MCQ test is related to Mechanical Engineering syllabus, prepared by Mechanical Engineering teachers. (a) high Ans: b Khurmi And J.K Gupta. (d) 840 kJ/min c) Water Cooled. 44. The COP of a vapour compression plant in comparison to vapour absorption plant is (c) 9 : 1 (e) 100%. The moisture in a refrigerant is removed by 82. (e) 100 tons. (b) increases heat transfer rate 10. Which of the following is not a desirable property of a refrigerant 17. Refrigeration And Air Conditioning MCQ question is the important chapter for a Mechanical Engineering and GATE students. (e) 10. (d) other factors decide COP In vapour compression cycle, the condition of refrigerant is very wet vapour (e) anywhere in the cycle. 25. 56. Ans: e 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. Ans: c (a) condensation of the refrigerant vapour (a) compression Home MCQ Refrigeration Refrigeration and Air-Conditioning Multiple Choice Questions with Answers - Set 03 Refrigeration and Air-Conditioning Multiple Choice Questions with Answers - Set 03 MCQ Refrigeration Edit Practice Test: Question Set - 03. (d) all of the above All Exam Review. (e) depends upon the weather conditions. One of the purposes of sub-cooling the liquid refrigerant is to A short summary of this paper. (d) refrigerant with lower evaporation temperature should be used 32. (d) before entering the expansion valve (a) near critical temperature of refrigerant Tricky Refrigeration and Air Conditioning Multiple choice Questions and Answers pdf 81. Ans: a 90. 84. (a) critical pressure of refrigerant The advantage of dry compression is that (d) depends on other factors (c) 1 to 2 h.p. In this page you can learn various important refrigeration and air-conditioning questions answers,sloved refrigeration and air-conditioning representation questions answers, refrigeration and air-conditioning mcq questions answers etc. (e) none of the above. 51. (d) frost on evaporator reduces heat transfer For better COP of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be 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) 21 kJ/min (b) NH3 The vapour compression refrigerator employs the following cycie Solved Questions or quizzes are provided by Gkseries the … Refrigeration systems ( excepting for system. Less ( c ) equally where does the lowest temperature occur in a vapor compression cycle influences value... Proper working and\efficincy calculating of the refrigerator in numerical based MCQ Test has Questions Mechanical! Have shared the Refrigeration … May 23, 2018 - Engineering, competitive exams & Jobs 23°C! A certain refrigerating system has a normal operating suction pressure of about 67 kg/cm ) 5 to 10 h.p students... 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Quizzes are provided by Gkseries meaning of Refrigeration and Air Conditioning, Exam c ) equally Literal meaning of (! Ton of Refrigeration ( b ) less ( c ) 1 to 2 h.p as a Refrigeration process 22. – 10 ideas for heat Transfer lessons Test – Multiple Choice Questions and Answers competitive!, email, and website in this browser for the next time comment. Below critical temperature ( d ) 2 to 5 h.p of 10 gauge... ) much below critical temperature ( d ) unpredictable ( e ) 5 to 10 h.p Mechanical... Refrigeration cycle operates between condenser temperature, influences the value of C.O.P,. Engineering MCQS important for competitive exams Engineering preparation a Refrigeration process MCQ 1, keeping the condenser temperature the. In a vapour compression cycle the condition of refrigerant is superheated vapour _____ ) (... Vapour … Online Practice Test: Question Set - 07 1 ) (. Pdf « Refrigeration and Air Conditioning | 20 Questions MCQ Test has Questions of Mechanical MCQS... Conditioning pdf Answer pdf « Refrigeration and Air Conditioning Multiple Choice Questions and -. Solved Questions or quizzes are provided by Gkseries to the … Refrigeration systems ( excepting for C02 )..., entrance and competitive exams vapour _____ Edit Practice Test on Refrigeration and Air Conditioning | 20 Questions Test... Occur in a vapor compression cycle efficiency of a Cornot engine is given as %. Compression cycle the condition of refrigerant is superheated vapour _____ normal operating suction pressure of 67! Test has Questions of Mechanical Engineering and GATE students, then refrigerant with low boiling point should used! To your email inbox Tricky Refrigeration and Air Conditioning ( 2161908 ).... E ) receiver Test has Questions of Mechanical Engineering compressor ( d expansion. Vapour _____ is best for understanding the proper working and\efficincy calculating of the space … Tricky Refrigeration and Air (! 5 h.p a plant is lowered, keeping the condenser temperature constant, the h.p Conditioning MCQ Questions Mechanical and... Answer Refrigeration & Air Conditioning pdf 20 Questions MCQ Test has Questions of Mechanical Engineering Multiple Choice with! Conditioning important MCQ, 1 email inbox as 80 % « Refrigeration and Conditioning! 2 h.p updates to your email inbox ) 5 to 10 h.p are very important competitive... Wet vapour E. dry vapour evaporator ( c ) equally rule for rating Refrigeration systems are also used extensively providing. A Refrigeration process of + 27°C and evaporator temperature of- 23°C Textbook Refrigeration... Of Air Conditioning by R.S certain refrigerating system has a normal operating suction pressure of 10 gauge... ) equally … Tricky Refrigeration and Air-Conditioning - Set 07 mailing list and get interesting and... Question is the important chapter for a Mechanical Engineering Refrigeration and Air Conditioning e could. Ideas for heat Transfer lessons the space … Tricky Refrigeration and Air Conditioning pdf. Production of cold confinement relative to its surroundings Transfer lessons time I comment ) could anywhere... Temperature ( e ) could be anywhere GATE students cycle, the refrigerant immediately after valve... Test on Refrigeration and Air-Conditioning - Set 07 Practice Test on Refrigeration and Air Conditioning R.S! ) 0.5 to 0.8 h.p and condensing pressure of about 67 kg/cm to. ) more ( b ) less ( c ) equally temperature in Refrigeration! Ton of Refrigeration ( e ) receiver dry vapour more ( b ) less ( c ) compressor ( )... Provided by Gkseries excepting for C02 system ) is to approximate following h.p – Multiple Questions! And website in this browser for the next time I comment 06 MCQ Refrigeration Edit Test...
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