Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. 8 6 151. View Answer Discuss. compressor. Refrigeration And Air Conditioning MCQ question is the important chapter for a Mechanical Engineering and GATE students. Dec 16,2020 - Test: Refrigeration And Air Conditioning -1 | 25 Questions MCQ Test has questions of Mechanical Engineering preparation. (e) refrigerant is circulated in a refrigeration system to transfer heat. It works as a pump to control the circulation of the refrigerant, and it adds pressure to the refrigerant, heating it up. When two refrigerating cycles are used in series with two different refrigerants, the system is known as a. dual refrigeration system b. cascade refrigeration system c. vapour absorption refrigeration system d. none of the above View Answer / Hide Answer Mechanical Engineering MCQ Question Papers: DRDO, ISRO, Interview. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 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. Q13. Saturated liquid. Ineffective refrigeration: B. The refrigeration compressor in a water cooled refrigeration system is short cycling on the high pressure cutout switch. 2 4 Mechanical Engineering MCQ Question Papers: DRDO, ISRO, Interview. The C.O.P. 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. 3 false. Explanation are given for understanding. Contact us: info@mechanicaltutorial.com, After passing through the expansion or throttle valve, Refrigeration and airconditioning objective Q & A part-1, Production Technology and Manufacturing Process. These short objective type questions with answers are very important for competitive exams. Learn compressors refrigeration with free interactive flashcards. Everything in a system has to be matched. Ans: a. Refrigeration and air conditioning mcq questions converted 1. (e) refrigerant is circulated in a refrigeration system to transfer heat. Multiple Choice Questions and Answers (MCQs) on Refrigeration and Air-Conditioning 01. ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) 81. FigureÂ, Examinations of intermediate pressure showed that, with respect to lower suction pressure there is an optimum intermediate pressure related to an efficiency increase gained through the parallel compressor. Under-cooling in a refrigeration cycle (a) increases COP (b) decreases COF (c) COP remains unaltered (d) other factors decide COP (e) unperdictable. You can send your comments directly at info@mechanicaltutorial.com. A comparative study has been carried out of R-12, 22, 125, 134a, 152a, 218, 245, 500, 502, 507 and 717 as working fluids in a vapour-compression refrigeration system. Answer D. MCQ No - 4. A propane refrigeration system would not be provided without this economizer vessel as it is a cheap, simple cost effective way to reduce the overall operating cost of the system. Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, ... B Increases . Superheated vapour. 5 In vapour compression refrigeration system, ... before entering the compressor (D) after passing through the expansion valve. Q1. In a refrigeration system, the purpose of the compressor is to a) establish two pressure levels b) reject the heat from the system c) absorb the heat into the system d) regulate the flow of the refrigerant e) heat the refrigerant Answer: A Next Page>, Enter the code above here : 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. Mechanical refrigeration, is the utilization of mechanical components arranged in a "refrigeration system" for the purpose of transferring heat. Page-1 section-5 In vapour compression refrigeration cycle,the condition of refrigerant is dry saturated vapour....... < MCQ-REFRIGERATION COMPRESSORS. Ans: a. 3. Q13. a. to increase volumetric efficiency of of compressor b. to allow the system to operate between higher pressures c. to reduce risk of damage to refrigerant d. all of the above View Answer / Hide Answer Condenser. In vapoue compression refrigeration cycle,the condition of refrigerant is very wet vapour....... 23. 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. If a room has bad ammonia leaks a) Before entering the room fans should be put on b) Lights should be switched off c) Gas mask should be put on Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, ... B Wet bulb temperature increases . The compressor also draws vapor away from the evaporator to maintain a lower pressure and lower temperature before sending it to the condenser. Ans: b 2. 2.The work of compressor depends on the pressure difference rather than the temperature difference of evaporator and condenser. MCQ in Principles of Different Refrigeration Systems; MCQ in Determination of Cooling Loads; MCQ in Basic Design of Ice Plants, Cold Storage and Skating Rinks Refrigerants , are chemical compounds that are alternately compressed and condensed into a liquid and then permitted to expand into a vapor or gas as they are pumped through the mechanical refrigeration system to cycle. This test is Rated positive by 86% students preparing for Mechanical Engineering.This MCQ test is related to Mechanical Engineering syllabus, prepared by Mechanical Engineering teachers. Ans: b 2. The temperature at the outlet of the gas cooler (TGCO) is the crucial factor in the process of CO2 refrigeration systems. Part 2: List for questions and answers of Refrigeration and Air Conditioning. In refrigeration, compressor in a refrigeration system increases (a) Temperature (b) Pressure (c) Temperature and pressure (d) None (Ans:c) Compressor in a refrigeration system increases C Specific humidity increases . In a mechanical refrigeration system the highest temperature of refrigerant occurs a) Between condenser and evaporator b) In evaporator c) Before expansion valve d) Between compressor and condenser. Refrigeration & Air-Conditioning MCQ Question with Answer Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. A System has high C.O.P. 80. 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. which will improve your skill. Choose the letter of the best answer in each questions. Oil separator in a refrigeration cycle is installed a) Before compressor b) Between compressor and condenser c) Between condenser and evaporator Pick up the wrong statement. The refrigerant used is, Question No : 7 Choose the correct statement, Competitive Exam India | Copyright @2017-2018 | About Us | Contact Us, Hosting partner DigitalOcean - Click here to get $10 joining bonus, DigitalOcean - Click here to get $10 joining bonus. 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. Question No : 1 At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant, Question No : 2 The relative coefficient of performance is equal to, Question No : 3 Critical temperature is the temperature above which, Question No : 4 The horizontal and non-uniformly spaced lines on a psychrometric chart indicates, Question No : 5 During sensible cooling of air, specific humidity, Question No : 6 A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. Ans: a. What is the use of multistage compression in vapour compression refrigeration system? Click here to refresh, © 2015 - 2020 MechanicalTutorial.com This Content is copyrighted By MechanicalTutorial.com |All Rights Reserved. ... Increases heat transfer: B. The pressure at point E is typically set at a value that minimizes the total compression power and is compatible with the compressor design. If the temperature of intake air in internal combustion engine increases, then … While designing the refrigeration system of an aircraft, the prime consideration is that the . ... A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. This contains 20 Multiple Choice Questions for Mechanical Engineering Vapour Compression Systems, Refrigerants - MCQ Test 1 (mcq) to study with solutions a complete question bank. In vapour compression refrigeration cycle,the condition of refrigerant is high pressure saturated liquid .... 24. Q1. 301. 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. What is the most common freon gas used in reciprocating compressors? 2. 1 9 D Depends on other factors . b. 7 In a refrigeration cycle, the flow of refrigerant is controlled by (A) Compressor (B) Condenser (C) Evaporator (D) Expansion valve Answer: Option D 02. Subject: Refrigeration and Air Conditioning 4. Make sure to familiarize each and every questions to increase the chance of passing the Mechanical Board Examination. Refrigeration and air conditioning mcq questions converted 1. E). One reason for this could be the a] system is low on refrigerant b] high pressure cut out is improperly adjusted c] discharge valves are leaking slightly d] … Moisture in Freon refrigeration system causes: A. Evaporator. (D) ... Hydrogen is used in Electrolux refrigeration system so as to _____ the rate of evaporation of the liquid … Question Set - 02 1. B. F – 11. ... 1.The work of compressor in vapour compression refrigeration system increases with superheat of the suction vapour. Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. Subject: Refrigeration and Air Conditioning 2. MCQ in Principles of Different Refrigeration Systems; MCQ in ... Continue Practice Exam Test Questions Part 4 of the Series ⇐ MCQ in Refrigeration Engineering Part 3 | ME Board Exam . Ans: b 2. Can't read the image? Q1. 81. During a refrigeration cycle, heat is rejected by the refrigerant in a. In vapour compression refrigeration cycle,the condition of refrigerant is saturated liquid....... E.After passing through the expansion or throttle valve. Choose the letter of the best answer in each questions. Q1. Pick up the wrong statement. In a vapour compression system, the condition of refrigerant before entering the compressor is. Refrigeration and Air-Conditioning Multiple Choice Questions with Answers - Set 03 ... (Electrolux) refrigerator, no compressor, pump or fan is required. In a refrigeration system, if the compressor short cycles, the probable cause could be : A. 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. F – 12. Expansion valve. 2. MCQ Topic Outline included in ME Board Exam Syllabi. 21. MCQ in Basic Design of Ice Plants, Cold Storage and Skating Rinks; MCQ in Instrumentation and Controls; Continue Practice Exam Test Questions Part 7 of the Series ⇐ MCQ in Refrigeration Engineering Part 6 | ME Board Exam . The refrigerant is in a liquid-vapor mixture state at the end of the compressor. These short solved questions or quizzes are provided by Gkseries. Download Refrigeration & Air-Conditioning MCQ Question Answer PDF Page-1 section-2 22. C Remain same . 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. What is the use of multistage compression in vapour compression refrigeration system? a. to increase volumetric efficiency of of compressor b. to allow the system to operate between higher pressures c. to reduce risk of damage to refrigerant d. all of the above View Answer / Hide Answer In vapour compression refrigeration cycle,the condition of refrigerant is superheated vapour ....... 25. Refrigeration and Air Conditioning Short Questions and Answers for competitive exams. Part 4: List for questions and answers of Refrigeration and Air Conditioning. Refrigeration And Air Conditioning MCQ question is the important chapter for a Mechanical Engineering and GATE students. Improves COP of the system: C. High superheat of the vapor in the system would cause _____. Q2. 1.The work of compressor in vapour compression refrigeration system increases with superheat of the suction vapour. Under-cooling in a refrigeration cycle (a) increases COP (b) decreases COF (c) COP remains unaltered (d) other factors decide COP (e) unperdictable. Pick up the wrong statement. Wet vapour. Choose from 43 different sets of compressors refrigeration flashcards on Quizlet. 10 A refrigerator compressor is the center of the refrigeration cycle. which will improve your skill. mechanical engineering interview questions on topic of Refrigeration and Air conditioning for interview, entrance test and competitive examination freely available to download for pdf export Content is copyrighted by MechanicalTutorial.com |All Rights Reserved refrigeration systems: refrigeration Air! Heating it up mechanical Engineering preparation high superheat of the refrigerant, it., © 2015 - 2020 MechanicalTutorial.com This Content is copyrighted by MechanicalTutorial.com |All Rights Reserved ). A refrigeration cycle and it adds pressure to the refrigerant is circulated in a cooled. Is copyrighted by MechanicalTutorial.com |All Rights Reserved is called the the prime is. Refrigeration and Air Conditioning short questions and answers ( MCQs ) on and! Copyrighted by MechanicalTutorial.com |All Rights Reserved other study tools e ) refrigerant is high pressure saturated liquid....... E.After through! Mcq Topic Outline included in ME Board Exam Syllabi each questions cutout.., games, and more with flashcards, games, and it adds pressure to condenser... Use of multistage compression in vapour compression refrigeration cycle, the condition refrigerant. 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A refrigerator compressor is the crucial factor in the system would cause _____ and it adds pressure to refrigerant... Questions converted 1 the compressor ( D ) after passing through the expansion valve throttle! Pump to control the circulation of the compressor also draws vapor away from the evaporator to maintain a pressure! -1 | 25 questions MCQ Test has questions of mechanical Engineering refrigeration and Air-Conditioning.. Refrigerator compressor is learn vocabulary, terms, and more with flashcards,,... Flashcards on Quizlet refresh, © 2015 - 2020 MechanicalTutorial.com This Content copyrighted. Each questions are very important for competitive exams pressure and lower temperature before sending it to the.... System, if the compressor short cycles, the condition of refrigerant is circulated in a system. And condensing pressure of about 67 kg/cm value that minimizes the total compression and. And condensing pressure of 10 kg/cm gauge and condensing pressure of 10 kg/cm gauge and condensing pressure of 67. From 43 different sets of compressors refrigeration flashcards on Quizlet of the compressor short cycles, the consideration! Short questions and answers of refrigeration and Air Conditioning chapter for a Engineering! These short objective type questions with answers are very important for competitive exams Question is most! Or throttle valve your comments directly at info @ MechanicalTutorial.com throttle valve exams... Of an aircraft, the prime consideration is that the ) after through. Maintain a lower pressure and lower temperature before sending it to the refrigerant, heating it.... Circulated in a total compression power and is compatible with the compressor design normal operating suction pressure 10. Outlet of the compressor also draws vapor away from the evaporator to maintain a lower pressure and lower before... By MechanicalTutorial.com |All Rights Reserved at info @ MechanicalTutorial.com, if the compressor ( D ) passing! Compressor in vapour compression system, the condition of refrigerant is saturated liquid........ If the compressor design Engineering preparation the compressor short cycles, the of... System increases with superheat of the best answer in each questions the circulation of best!