Some refrigerants are well suited for high and medium temperature applications, and some are better suited and for a lower temp applications. 50. Clapeyron equation is applicable for registration at_____? What is the desirable characteristics of a refrigerant? Which of the following conductors is applicable for underground service entrance conductors? View Answer: Answer: Option D . (Bottom on mobile) The cascade cycle is often employed for devices such as ULT freezers. (Ans:a), The ratio of  COP of a two stage Cascade refrigeration system vs three stage cascade system is, In a 2 stage cascade refrigeration system, cooling effect occurs in the. Ans: d 5. (a) Two stage 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) Low temperature applications (d) None (Ans: b), In cascade refrigeration, number of refrigerants used is Pick up the wrong statement. Go To Download Page Close. Chemical Engineering. Properties can be a set in recommended places and the document modified for … If the high-loop temperature requires 10.12 kW compressor power and low loop 15.93 kW, determine the COP of the system. Environmental protection Both NH 3 and CO 2 are nature refrigerant. Mcq Added by: Muhammad Bilal Khattak. 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. Home دسته‌بندی نشده reciprocating air compressor is best suited for mcq. C Sublimation temperature . Watch Queue Queue. India – https://amzn.to/3kLzZ5g / USA – https://amzn.to/3qivm5J “Process Systems Analysis and Control” by Coughanowr & Donald R. India – https://amzn.to/3mVBIqD / USA –https://amzn.to/3nuGOZW. B Saturation point of liquid . Correct Answer. (d) None C. Transistor. Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. Electronics Engineering. Vapour Compression Refrigeration Systems: Performance Aspects And Cycle Modifications; Multi-Stage Vapour Compression Refrigeration Systems. Two-three-four stage systems are in use. 2. (b) ≥ Two 0. It was proposed by 'Sadi Carnot' in 1824. An example two-stage process is shown at right. How can CSS be cascaded to mix with user’s personal sheet? (c) Four stage Electronic Engineering MCQ Question Papers: ENTC, IT Interview Placement. (Ans: b), Cascading refrigeration is applicable for 2. Q1. 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. Energy-efficient CO2 cascade refrigeration system Designed utilising the subcritical refrigeration cycle in a cascade arrangement to refrigerate the low temperature group of merchandisers and freezers through direct expansion of the CO2 refrigerant c) It decreases monotonically which will improve your skill. Important MCQ of GST By CA Vivek Gaba (Expected in Exam) 1. (b) Three stage In a cascade refrigeration system, two or more vapor-compression cycles with different refrigerants are used. (a) Cold storage (c) Sensible heat Cascade Control guidelines are presented for continuous systems but are applicable to digital con trol systems. Gonit Sora is an attempt to bridge the gap between classroom math teaching and real life practical and fun mathematics. A cascade refrigeration cycle is a multi-stage thermodynamic cycle. 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. 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. Refrigeration and Air Conditioning Refrigeration and Air Conditioning. 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. Watch Queue Queue In a refrigeration cycle, the flow of refrigerant is controlled by (A) Compressor (B) Condenser (C) Evaporator (D) Expansion valve. Menu. Medical Science Engg. ELECTRICAL ENGINEERING IMPORTANT MCQ-BASIC ELECTRICAL PART THREE. 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. (a) Two stage If a type 0 system is subjected to step input, what is its effect on steady state error? ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) (b) Evaporator of low temperature Part 5: List for questions and answers of Control Systems . (Ans: c), The refrigerants used in cascade refrigeration (c) Vapor absorption refrigeration 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 […] What is the device in a transistor oscillator? TOP Refrigeration and Air Conditioning -Mechanical Engineering Multiple choice Questions and Answers ListBell-coleman (e) none of the above. This video is unavailable. A. LC tank circuit. Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. 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. Multiple Choice Question (MCQ) – Process Control. RME Board Exam 1995 . 50 Hz compressor has RPM 3000. A Saturation point of vapour . This test comprises of 50 questions on Thermodynamics. Transformer Power System Protective Relay Basic Electrical Interview Questions & Answers MCQ. Dec 16,2020 - Test: Refrigeration And Air Conditioning -1 | 25 Questions MCQ Test has questions of Mechanical Engineering preparation. Mechanical Engineering. (d) None ANSWER: b. cascade refrigeration system . B. Biasing circuit. 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. (d) None Natural refrigerants are substances that serve as refrigerants in refrigeration systems (including refrigerators, HVAC, and air conditioning).They are alternatives to synthetic refrigerants such as chlorofluorocarbon (CFC), hydrochlorofluorocarbon (HCFC), and hydrofluorocarbon (HFC) based refrigerants. The condition not applicable to water cement ratio law, is ... I.C Engines Multiple Choice Questions with Answers - Set 02. (d) None TOP Refrigeration and Air Conditioning -Mechanical Engineering Multiple choice Questions and Answers ListBell-coleman (e) none of the above. (c) Equal to that of a cascade refrigeration (c) Condenser of high temperature B [ ]) 30sin50πt. Ans: a 6. (a) Greater than that for a cascade refrigeration 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. Questions on Thermodynamic Relations, Equilibrium and Stability, Vapour Power Cycles, Gas Power Cycles, Refrigeration Cycles, Psychrometrics, Steam Generators etc.1 mark is awarded for each correct answer and 0.25 mark will … 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. Unlike other refrigerants, natural refrigerants are non-synthetic and can be found in nature. 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. Choose the letter of the best answer in each questions. What is Cascade refrigeration? (a) Evaporator of high temperature View Answer: Answer: Option C. Solution: 202. (a) Mix with each other A two stage cascade vapor compression refrigeration system uses ammonia in the low temperature loop and R-12 in the high-temperature loop. b. cascade refrigeration system c. vapour absorption refrigeration system d. none of the above View Answer / Hide Answer. Computer Engineering. Civil Engineering. It is applicable for perfect gas whose efficiency is considered to be maximum. MCQ Refrigeration Edit Practice Test: Question Set - 01. Clapeyron equation is applicable for registration at_____? ANSWER KEY-Correct answer is indicated by symbol (V) in options. (Ans: c), In cascade refrigeration, condenser of low temperature refrigeration is coupled with A Vapor Compression Refrigeration system has a 281W, 50 Hz compressor with displacement 11.1 cm3/rev. 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. The evaporation-condensation temperatures of each cycle are sequentially lower … (b) Less than that for a cascade refrigeration (b) Three stage Vapour Compression Refrigeration Systems:Performance Aspects And Cycle Modifications. 1. In vapor compression cycle, the condition of refrigerant is very wet vapor_____? (a) Two stage (b) Three stage Multi-Stage Vapour Compression Refrigeration Systems; Multi-Evaporator And Cascade Systems. D. Feedback circuit. Subject: Control Systems 5. 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). Refrigeration & Air-Conditioning MCQ Question with Answer ... Chaperon equation is applicable for registration at . Correct Answer : … (b) Total heat The chapter concludes with common examples that highlight the importance of conforming to the design criteria. Two-three-four stage systems are in use. D. type USE. a) It increases continuously. reciprocating air compressor is best suited for mcq. (c) Four stage 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. 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. 2. (ANs: b), For achieving -500C temperature, cascade refrigeration used is 3. (a) Air refrigeration in the rotor circuit d) By changing the number of stator poles Electricalunits.com. 0. a) Rotor rheostat control b) By operating two motors in cascade c) By injecting an e.m.f. 201. Explanation are given for understanding. Applications of CO 2 Refrigeration System Main Feature Safety NH 3 in the high temperature part only, extremely small charging volume of NH3; CO 2 is safe, nontoxic and noninflammable, thus ensuring the safety of people and food. These short solved questions or quizzes are provided by Gkseries. Solution: 7. Electrical Engineering. A. type THWN. D Triple 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. Free download in PDF Refrigeration and Air Conditioning Multiple Choice Questions and Answers for competitive exams. 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