A standard ice point temperature corresponds to the temperature of (a) water … Ans: d (e) none of the above. (a) vapour compression (c) it results in high volumetirc and mechanical efficiency (b) takes place at constant temperature unit, one ton of refrigeration is equal to (d) metering of the refrigerant liquid In vapour compression cycle the condition of refrigerant is superheated vapour Ans: b 2. (c) strong solution to ammonia vapour 72. 2. 85. 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 … Ans: b (e) under some conditions small and under some conditions high. Ans: d (e) condenser, absorber and separator (rectifier). 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 Ans: d (a) Freon-12 (b) Rankine cycle (d) before entering the expansion valve 11) Large sized industrial air-conditioning plant are. Herewith we have shared the Refrigeration and Air-conditioning - Mechanical Engineering Multiple choice Questions and Answers pdf. (a) lowers evaporation temperature (d) more/less depending on size of plant Ans: d Ans: e REFRIGERATION AND AIR CONDITIONING THIRD EDITION. 67. Ans: d View Answer. 23. READ PAPER. (b) higher than atmospheric pressure (c) 2-4 bars (b) NH3 In a vapour compression cycle, the refrigerant immediately after expansion valve is (a) condenser (c) may increase or decrease depending on the type of refrigerant used 0. (b) Refrigerant leaves the condenser as liquid (e) none of the above. 92. One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice (c) after passing through the expansion or throttle valve (a) above which liquid will remain liquid (d) temperature, pressure, and specil volume 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. (a) condenser (a) same (e) unpredictable. 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. 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. A short summary of this paper. Which of the following can be called as a refrigeration process? (b) slightly above atmospheric pressure (d) 5-6 bars 56. 59. (c) optimum Most of the domestic refrigerators work on the following refrigeration system Ans: a This paper. 18. (c) COP remains unaltered (e) throttling device. 22. (d) 6 (e) none of the above. Ans: c (e) lithium bromide is driven out of solution. (b) 5 tons 12. (b) sub-cooled liquid (c) remains same of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will In a vapor compression cycle, the refrigerant immediately after expansion valve is_____? (b) saturation point of liquid Pick up the wrong statement. A short summary of this paper. 51. heat facts information pictures Encyclopedia com. The advantage of dry compression is that If the- cycle direction be reversed, what will be the value of COP of reversed Carnot cycle (d) all of the above (a) 1.25 (c) euqal The COP of a vapour compression plant in comparison to vapour absorption plant is (b) 50 kcal/kr (c) the refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours (b) condenser (c) COP remains unaltered (c) 5 (a) domestic refrigerators (d) before [entering the expansion valve (e) 100 tons. Clapeyron equation is applicable for registration at In vapour compression cycle, the conditii of refrigerant is saturated liquid (a) same A standard ice point temperature corresponds to the temperature of (a) water at 0°C (b) ice … refrigeration and air conditioning mcq pdf ... Refrigeration and Air Conditioning Questions Answers. (a) lithium bromide used in vapour absorption cycle is nonvolatile (c) zero Johana C Siliwire. 24. (b) manually operated valve (e) none of the above. (d) weak solution mixes with strong solution Download. 61. (e) breakdown of refrigerant. Refrigeration and Air Conditioning (2161908) MCQ. (d) gas liquefaction 10. (c) 10 tons (d) triple point (b) 1 : 9 (c) – 33.3°C Refrigeration systems are also used extensively for providing thermal comfort to human beings by means of air conditioning. 5. Ans: c (c) total heat lines These short solved questions or quizzes are provided by Gkseries. (a) in 1 hour The C.O.P. The vapour pressure of refrigerant should be (c) takes place at constant entropy 1. (a) compression Ans: e (b) safety relief valve (a) 0.1 ton The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy-diagram represents (e) before entering the compressor. (b) before passing through the condenser The value of COP in vapour compression cycle is usually (d) Erricson cycle (d) expansion valve. ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) ... Refrigeration and Air Conditioning (2161908) MCQ. (b) increases MCQ No - 1. Ammonia-absorption refrigeration cycle requires (e) non-toxic and non-inflammable. (b) above critical temperature Critical temperature is’ the temperature above which (c) good electrical conductor Explanation are given for understanding. Download Refrigeration & Air-Conditioning MCQ Question Answer PDF Ans: a (b) high power consumption 55. 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 Below Drive links for MCQs. The vapour … Ans: a (d) 840 kJ/min Download Full PDF Package. (c) dehumidifier (e) 10. (b) expansion valve Next . Orko Kaabir. (e) anywhere in the cycle. The vapour compression refrigerator employs the following cycie Download Refrigeration & Air-Conditioning MCQ Question Answer PDF « One of the purposes of sub-cooling the liquid refrigerant is to (d) before entering the expansion valve (b) ice at – 4°C c) Water Cooled. At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant (e) 10. (d) depends upon the make It is very useful for all kind of GATE, SSC, ESE and other competitive examinations Thermal conductivity of a material may be defined as the heat conducted in unit time across unit area … (c) 1 to 2 h.p. Ans: b 82. Ans: b (b) weak solution to strong solution (b) Carnot Refrigeration Literal meaning of refrigeration is the production of cold confinement relative to its surroundings. Watch Queue Queue 79. An important characteristic of absorption system of refrigeration is Ans: a 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. (d) smaller/bigger depending on capacity (e) none of the above. (c) 80 kcal/min 47. 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. (d) expansion valve (e) all of the above. (d) 0°C (e) compressor discharge. (e) none of the above. (d) before entering the expansion valve (e) pone of the above. 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(a) noisy operation (c) equal to unity Pick up the wrong statement. Online Practice Test on Refrigeration and Air-Conditioning - Set 06 MCQ Refrigeration Edit Practice Test: Question Set - 06. (c) expansion valve and evaporator (e) none of the above. (a) Ericsson 95. 58. (a) after passing through the condenser Refrigeration in aeroplanes usually employs the following refrigerant Option – c) ... SAIL Bokaro Syllabus 2021 Download PDF ACT OCT Exam Pattern; रघुबेन्द्र सिंह. (b) will be lower (e) none of the above. Choose the correct statement Ans: b Next . READ PAPER. (d) low pressure side near receiver (e) low sensible heat Ans: c (d) Air (b) specific volume and enthalpy Short horizontal lines on pressure-enthalpy chart show (a) after passing through the condenser Khurmi And J.K Gupta. (c) carnot cycle (e) dry vapour. 77. (c) high pressure side close to receiver The higher temperature in vapour compression cycle occurs at (e) expansion valve. (a) increase MCQ No - 1. (d) 80 kcal/hr (e) 3 : 1 (c) toxic and non-inflammable A Textbook of Refrigeration and Air Conditioning By R.S. Refrigeration & Air-Conditioning MCQ Question with Answer Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. (a) condenser tubes (e) such a cycle does not exist. (a) of cooling medium A standard ice point temperature corresponds to the temperature of Ans: b 54. (b) evaporation of the refrigerant liquid Ans: b (a) 1 : 1 The Cannot coefficient of performance of cycle will be (a) 0.2 (b) 1.2 (c) 5 (d) 6 (e) 10. (a) a gas will never liquefy (e) Hydrocarbon refrigerant. (b) Stirling 78. 7.The relative coefficient of performance is 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. Ans: e (c) perfectly tight vapour seal should be used (c) actual COP x theoretical COP (d) zero work input One ton refrigeratiqn corresponds to 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. REFRIGERATION AND AIR CONDITIONING THIRD EDITION . (e) unpredictable. 91. Reducing suction pressure in refrigeration cycle Ans: e (c) same (b) condenser Vertical lines on pressure-enthalpy chart show constant (d) higher critical temperature (e) unpredictable. A. liquid B. sub-cooled liquid C. saturated liquid D. wet vapour E. dry vapour. 15. (d) wet vapour 32. The C.O.P of a refrigeration cycle with increase in evaporator temperature, keeping condenser temperature constant, will c) Water Cooled. (d) highly toxic and inflammable 49. Ans: c (a) -100°C Ans: a 42. Ans: a The general rule for rating refrigeration systems (excepting for C02 system) is to approximate following h.p. Ans: d For better COP of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be 39. Allowable pressure on high-pressure side or ammonia absorption system is of the order of Ans: d A one tonne refrigerating machine means that (A) One tonne is the total ... I.C Engines Multiple Choice Questions with Answers - Set 02. Highest pressure encountered in a refrigeration system should be of compressor required will be One ton of the refrigeration is 37. (e) in 10 hours. Refrigeration And Air Conditioning MCQ question is the important chapter for a Mechanical Engineering and GATE students. (e) constant volume lines. (a) after passing through the condenser (c) Reversed Rankine Absorption system normally uses the following refrigerant It is very useful for all kind of GATE, SSC, ESE and other competitive examinations The coefficient of performance is the ratio of the refrigerant effect to the (a) heat of compression (b) work done by compressor (c) enthalpy … MCQs of Introduction. Ans: a (a) Tow specific heat of liquid Where does the lowest temperature occur in a vapour compression cycle ? (e) the refrigeration effect to produce 1 ton of ice in 1 hour time. (d) before entering the expansion valve (e) Refrigerant is inside the lubes in case of a direct-expansion chiller. (d) 1-actual COP x theoretical COP Ans: b (b) ammonia vapour is driven out of solution (d) all of the above 87. (d) condenser and absorber Freon group of refrigerants are (A) Inflammable (B) … Ans: d (a) it permits higher speeds to be used The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases, 41. (a) ineffective refrigeration Refrigeration & Air Conditioning (AC) MCQ Questions Answers – Mechanical Engineering 1) COP of a carnot heat pump operating between -30C and 270C is a) 10 b) 9 c) 0.111 d) 0.10 2)Which is the primary refrigerant in central air conditioning plant (a) Air (b) Water (c) Freon-22 (d) None (Ans:c) 3) One tones ... Read more Refrigeration & Air Conditioning MCQ Questions … On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process Which of the following cycles uses air as the refrigerant (d) 2 to 5 h.p. Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07 MCQ Refrigeration Edit Practice Test: Question Set - 07. (d) non-toxic and inflammable Refrigeration and air conditioning objective type questions and answers - Set 16 MCQ Refrigeration Edit Practice Test: Question Set - 16. A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of- 23°C. Ans: b 2. रघुबेन्द्र सिंह. (b) detect liquid in vapour Ans: d d) Ammonia cooled. (a) increases COP (b) decrease (b) is more than 1 (d) ammonia vapour to weak solution (d) Brayton (c) cooling below 0°C 36. (b) work done by compressor Ans: a MCQ on Heat Transfer Refrigeration and Air Conditioning. Ans: e (d) toxic (a) Rankine Ans: e 70. (a) actual COP/fheoretical COP (a) 0.2 Air refrigeration cycle is used in (d) there is no such consideration Ans: c (e) before entering the compressor. (d) large latent heat (b) always more than unity (d) concentration of solution coming out of lithium bromide generator is more in comparison to that entering the generator The moisture in a refrigerant is removed by Ans: d In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to (b) Freon-22 (e) unperdictable. (e) none of the above. Ans: d (d) any one of the above (d) compressor and condenser refrigeration and air conditioning mcq pdf “Refrigeration and Air Conditioning ” Mechanical Engineering MCQS. (e) there is no such restriction. (e) none of the above. (c) Freon 1. (d) collect vapours (c) indirect (d) refrigerant with lower evaporation temperature should be used (b) axial View Answer. (c) All solar thermally operated absorption systems are capable only of intermittent operation 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, (a) small (b) 0.5 to 0.8 h.p. (c) 420 kJ/min (c) refrigerant cooling tubes 11) Large sized industrial air-conditioning plant are. (e) 33.3°C. a) Air cooled. (b) smaller Rating of a domestic refrigerator is of the order of A. If operating temperature of system is low, then refrigerant with low boiling point should be used … (c) Precooling and subcooling bf refrigerant are same (b) less (b) decrease 13. (a) heat of compression (e) receiver. Ans: c (c) constant total heat lines (c) miniature sealed unit (c) less (e) condensing temperature of ice. (c) compression of the refrigerant vapour (a) Ammonia (b) it permits complete evaporation in the evaporator Today Team CG Aspirants share with you CP Arora Refrigeration And Air Conditioning pdf. (c) using reagents The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is (a) saturation point of vapour (c) equally. (e) low specific volume of vapour. (e) unpredictable. (d) capillary tube 44. (e) non-inflammable. Pick up the wrong statement. The refrigerant used is b) Ground cooled. Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07 Practice Test: Question Set - 07 1. (c) 0.5 8. (e) Reversed Carnot. Refrigeration and Air-conditioning – Mechanical MCQs PDF Herewith we have shared the Refrigeration and Air-conditioning – Mechanical Engineering Multiple choice Questions and Answers pdf. A refrigerant should have low latent heat B. Ans: a (d) expansion valve Ans: b; A standard ice point temperature corresponds to the … (c) solid and dry ice The evolution of heat of solution takes place in ammonia absorption plant when Clapeyron equation is a relation between (a) near critical temperature of refrigerant (b) high boiling point 34. 35. (c) saturated liquid 100 TOP Refrigeration and Air Conditioning Multiple choice Questions and Answers pdf 71. (d) Brine For obtaining high COP, the pressure range of compressor should be (a) bigger cabinet should be used (e) dual cycle. (a) electrically operated throttling valve (a) critical pressure of refrigerant (c) sublimation temperature (e) none of the above. (d) driers (b) maximum work input All Exam Review. Ans: b Ans: c Science Teachers – 10 ideas for heat transfer lessons. (c) after passing through the expansion or throttle valve Refrigeration & Air-Conditioning MCQ Question with Answer Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. (a) water at 0°C 86. (e) volume lines. of a domestic refrigerator in comparison to domestic air conditioner will be 26. The COP of a domestic refrigerator (a) A refrigerant should have low latent heat (b) 25% (a) 210 kJ/min (a) receiver (e) none of the above. Practice Test: Question Set - 02 1. (e) temperature, pressure, specific volur and’enthalpy. (d) other factors decide COP 38. (a) non-toxic (b) before passing through the condenser Heat Transfer, Refrigeration and Air Conditioning Online Test – Multiple Choice Questions and Answers . (e) before entering the compressor.. (a) evaporator (d) condenser discharge 0. Ans: a (e) none of the above. In vapour compression cycle the condition of refrigerant is superheated vapour _____? (c) Freon-22 (a) increases COP (b) more than or equal to 3.65 kg (b) of freezing zone Cooling water is required for following equipment in ammonia absorption plant The Cannot coefficient of performance of cycle will be (d) water will never evaporate Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. Superheating in a refrigeration cycle Aqua ammonia is used as refrigerant in the following type of refrigeration system Air refrigeration operates on 43. (b) more (d) at which refrigerant gas becomes liquid (b) delivery of compressor In a refrigeration system, heat absorbed in comparison to heat rejected is (function() {var script=document.createElement("script");script.type="text/javascript";script.async =true;script.src="//telegram.im/widget-button/index.php?id=@allexamreview";document.getElementsByTagName("head")[0].appendChild(script);})(); Ans: d (b) less In vapour compression cycle using NH3 as refrigerant, initial charge is filled at One ton of refrigeration is equal to the refrigeration … 37 Full PDFs related to this paper. If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. Ans: d (c) high latent heat (e) 7-10 bars. 94. Which of the following refrigerants has lowest freezing point MCQs of Load Analysis. 1. (c) increase cooling effect (A) Cooling of a hot ingot from 1000°C to room temperature (B) Cooling of a pot of water by mixing it with a large block of ice (C) Cooling of a hot cup of coffee by leaving it on a table (D) Cooling of hot water by mixing it with … (d) S02 (d) unpredictable (e) 1-actual COP/fheoretical COP. (d) capillary tubes Ans: a 48. (c) evaparator Vapour compression refrigeration is some what like Ans: b 20. 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. (b) low boiling point 25. 21. 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) very little power consumption (d) 75% Ans: a (d) reversed Rankine cycle (a) more Ans: e (e) sensing reduction in pressure. (e) none of the above. Ans: a Ans: c Refrigeration and Air Conditioning. (b) above which liquid becomes gas temperature (e) could be anywhere. (b) 21 kJ/min (c) freezing automatic regulating valve (b) more 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. (e) 1000 kcal/day. Watch Queue Queue. In a refrigeration cycle, the flow of refrigerant is controlled by 64. rick up the incorrect statement (b) as low as possible (3 to 11°C) The bank of tubes at the back of domestic refrigerator are 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. 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