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Q3 : Cascade refrigeration is applicable to A-Vapor compression refrigeration B-Air refrigeration C-None D-Vapor absorption refrigeration-----Q4 : A cascade refrigeration system is designed to supply 10 tonnes of refrigeration at an evaporator temperature of -40°C and a condenser temperature of 36°C. (b) Three stage Two-three-four stage systems are in use. (b) Do not mix with each other MCQ's Search Engine. ANSWER KEY-Correct answer is indicated by symbol (V) in options. Ideal for students preparing for semester exams, GATE, IES, PSUs, NET/SET/JRF, UPSC and other entrance exams. C. Transistor. Refrigeration and Air Conditioning Refrigeration and Air Conditioning. Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. a) It increases continuously. Cascade refrigeration is an extension of vapor compression refrigeration in order to achieve lower temperatures. Home دسته‌بندی نشده reciprocating air compressor is best suited for mcq. MCQ Refrigeration Edit Practice Test: Question Set - 01. (c) Four stage (a) Cold storage A. saturation point of vapor B. saturation point of liquid C. sublimation temperature D. triple point E. critical point. (Ans: b), In Cascade refrigeration, cooling effect is produced by MCQ in Voltage Regulation; Continue Practice Exam Test Questions Part 5 of the Series. (b) Less than that for a cascade refrigeration B [ ]) 30sin50πt. A. LC tank circuit. Vapor Compression Refrigeration-1, https://www.mesubjects.net/wp-admin/post.php?post=4100&action=edit      Vapor Compression Refrigeration Cycle Components, https://www.mesubjects.net/wp-admin/post.php?post=4095&action=edit       Q.A. 2. (d) None Compensation to states under GST (Compensation to States) Act , 2017 is paid by a) Central Government from consolidated fund of India b) Central Government from GST compensation fund of India c) Central Government directly from the collection of compensation cess d) GST Council under Constitution of India. Ammonia-absorption refrigeration cycle requires (a) very little work input (b) maximum work input (c) nearly same work input as for vapour compression cycle (d) zero work input (e) none of the above. In a cascade refrigeration system, two or more vapor-compression cycles with different refrigerants are used. Both these processes are reversible and therefore It is the most efficient cycle, as it involves no losses. 50 Hz compressor has RPM 3000. 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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Q25.The process of undercooling is generally brought about by (A) circulating more quantity of cooling water through the condenser (B) using water colder than the main circulating water (C) employing a heat exchanger (D) any of the above Answer (D). a. it should not be toxic b. it should not be non-corrosive c. it should have minimum enthalpy of vaporization d. all of the above View Answer / Hide Answer. 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. (d) None ANSWER: b. cascade refrigeration system . Cascade refrigeration is a term you will hear more and more over the coming years, and while some of the systems may be very complex, the concept is actually pretty simple. Correct Answer. (a) Two stage Unlike other refrigerants, natural refrigerants are non-synthetic and can be found in nature. 3. 50. Correct Answer. 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Cascade refrigeration is applicable to (a) Air refrigeration (b) Vapor compression refrigeration (c) Vapor absorption refrigeration (d) None (Ans: b) In cascade refrigeration, number of refrigerants used is (a) ≤ One (b) ≥ Two […] The ammonia provides 15 tons of cooling. 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. Question No : 64 A bootstrap air cooling system has, Question No : 65 Rick up the incorrect statement, Question No : 66 In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be, Question No : 67 The bank of tubes at the back of domestic refrigerator is, Question No : 68 Chaperon equation is applicable for registration at, Question No : 69 The COP of a vapour compression plant in comparison to vapour absorption plant is, Question No : 70 The freezing point of R-12 is, 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. Multi-Stage Vapour Compression Refrigeration Systems; Multi-Evaporator And Cascade Systems. Some refrigerants are well suited for high and medium temperature applications, and some are better suited and for a lower temp applications. 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The value of C.O.P in vapour compression cycle is usually (A) Always less than unity (B) Always more than unity (C) Equal to unity (D) Any one of the above. Refrigeration & Air-Conditioning MCQ Question with Answer ... Chaperon equation is applicable for registration at . CASCADE REFRIGERATION Revised by: Frank Fulkerson, CMS Adapted from materials originally provided By: Charles C. E. Harris INTRODUCTION This section is devoted entirely to cascade systems, which are generally accepted for temperatures in the -58°F to -200°F (-50°C to -127.7°C) range. Mechanical Engineering. Watch Queue Queue. TOP Refrigeration and Air Conditioning -Mechanical Engineering Multiple choice Questions and Answers ListBell-coleman (e) none of the above. Mcq Added by: Muhammad Bilal Khattak. Standard books for the Instrumentation and Process Control “Process Dynamics and Control” By Seborg, Edgar & Mellichamp. View Answer Discuss. In a cascade system the high/medium temp … Refrigeration And Air Conditioning MCQ question is the important chapter for a Mechanical Engineering and GATE students. reciprocating air compressor is best suited for mcq. c) It decreases monotonically View Answer: Answer: Option D . Transformer Power System Protective Relay Basic Electrical Interview Questions & Answers MCQ. (a) Evaporator of high temperature View Answer: Answer: Option C. Solution: 202. (d) None mcq-Refrigeration-Cascade Cascade refrigeration is an extension of vapor compression refrigeration in order to achieve lower temperatures. Cascade refrigeration is a term you will hear more and more over the coming years, and while some of the systems may be very complex, the concept is actually pretty simple. B. Biasing circuit. Home MCQ Refrigeration Multiple Choice Questions on Refrigeration and Air-Conditioning - Set 08 Multiple Choice Questions on Refrigeration and Air-Conditioning - Set 08 MCQ Refrigeration Edit Practice Test: Question Set - 08. (c) Mix when in the vapor state Analysis of Cascade Refrigeration System based on thermodynamic perspective The cascade vapour refrigeration system with high side and low side vapour refrigeration systems is given as namely A and B and is attached to one another via a heat exchanger. (c) Condenser of high temperature (b) Three stage (d) None Home. Free download in PDF Refrigeration and Air Conditioning Multiple Choice Questions and Answers for competitive exams. The cascade refrigeration cycles are modelled using Aspen HYSYS v8.2 (Aspen Technology Inc., ... (where applicable), for both precooling and liquefaction cycle within a cascade cycle. (c) Vapor absorption refrigeration Multiple Choice Questions and Answers on Control Systems Multiple Choice Questions and Answers By Sasmita January 9, 2020 1) Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of … Pick up the wrong statement. (Ans: a), For achieving -800C temperature, cascade refrigeration used is Civil Engineering. This test comprises of 50 questions on Thermodynamics. Ans: d 5. 2. (a) Air refrigeration (Ans: b), In cascade refrigeration, number of refrigerants used is TOP Refrigeration and Air Conditioning -Mechanical Engineering Multiple choice Questions and Answers ListBell-coleman (e) none of the above. B Saturation point of liquid . (Ans: c), The refrigerants used in cascade refrigeration Vapour Compression Refrigeration Systems:Performance Aspects And Cycle Modifications. Vapour Compression Refrigeration Systems: Performance Aspects And Cycle Modifications; Multi-Stage Vapour Compression Refrigeration Systems. Gonit Sora গণিত চ’ৰা is a multi lingual (English and Assamese) web magazine devoted to publishing well written and original articles related to science in general and mathematics in particular. (a) Greater than that for a cascade refrigeration It is applicable for perfect gas whose efficiency is considered to be maximum. (Ans: b), For achieving -1000C temperature, cascade refrigeration used is https://www.mesubjects.net/wp-admin/post.php?post=4188&action=edit         MCQ Vapor Absorption refrigeration-1, https://www.mesubjects.net/wp-admin/post.php?post=4105&action=edit       Q.A. Some refrigerants are well suited for high and medium temperature applications, and some are better suited and for a lower temp applications. (b) Vapor compression refrigeration NH 3: ODP=0, GWP=0; CO 2: ODP=0, GWP=1; Energy saving NH 3 is the refrigerant … Q1. The condition not applicable to water cement ratio law, is ... I.C Engines Multiple Choice Questions with Answers - Set 02. Explanation are given for understanding. Page-1 section-5 Two-three-four stage systems are in use. (Ans: c), In cascade refrigeration, condenser of low temperature refrigeration is coupled with Page-2 section-4 Ans: d 5. Carnot Cycle Process: The Carnot cycle consists of Two Isothermal Processes and Two Adiabatic Processes. D. type USE. Cascade refrigeration is applicable to (a) Air refrigeration (b) Vapor compression refrigeration (c) Vapor absorption refrigeration (d) None (Ans: b) Rule, which is applicable in the entire sheet and not partly, is known as at-rule. (d) None How can CSS be cascaded to mix with user’s personal sheet? Cascade refrigeration is applicable to Q2. (c) Sensible heat We strive for the popularization of mathematics teaching … (Bottom on mobile) The cascade cycle is often employed for devices such as ULT freezers. 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