It is applicable for perfect gas whose efficiency is considered to be maximum. (c) Vapor absorption refrigeration Choose the letter of the best answer in each questions. Mechanical Engineering. Home. (Ans: c), In cascade refrigeration, condenser of low temperature refrigeration is coupled with Gonit Sora is an attempt to bridge the gap between classroom math teaching and real life practical and fun mathematics. How can CSS be cascaded to mix with user’s personal sheet? Multi-Stage Vapour Compression Refrigeration Systems; Multi-Evaporator And Cascade 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. (Ans: b), In Cascade refrigeration, cooling effect is produced by The evaporation-condensation temperatures of each cycle are sequentially lower … (b) Comfort air conditioning Free download in PDF Refrigeration and Air Conditioning Multiple Choice Questions and Answers for competitive exams. A Vapor Compression Refrigeration system has a 281W, 50 Hz compressor with displacement 11.1 cm3/rev. An example two-stage process is shown at right. c) It decreases monotonically (c) Condenser of high temperature 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. Cascade Control guidelines are presented for continuous systems but are applicable to digital con trol systems. (Ans:a), The COP of a single stage vapor compression refrigeration working between the same temperature limits is (d) None (b) Three stage Ans: d 5. (a) Greater than that for a cascade refrigeration ANSWER KEY-Correct answer is indicated by symbol (V) in options. Which of the following methods is easily applicable to control the speed of the squirrel cage induction motor? 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 […] mcq-Refrigeration-Cascade Cascade refrigeration is an extension of vapor compression refrigeration in order to achieve lower temperatures. C. Transistor. (d) None Vapor Compression refrigeration -2. MCQ-CASCADE REFRIGEARTION. 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. Part 5: List for questions and answers of Control Systems . (a) Latent heat Q1. Mcq Added by: Muhammad Bilal Khattak. It was proposed by 'Sadi Carnot' in 1824. (d) None Chemical Engineering. (a) Cold storage 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). (b) Evaporator of low temperature (Bottom on mobile) The cascade cycle is often employed for devices such as ULT freezers. 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. Page-1 section-5 Ans: d 5. which will improve your skill. This video is unavailable. View Answer: Answer: Option C. Solution: 202. Solution: 7. 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) Air refrigeration Watch Queue Queue Harikesh Yadav November 8, 2016 EE MCQ PDF, General. (a) Two stage Carnot Cycle Process: The Carnot cycle consists of Two Isothermal Processes and Two Adiabatic Processes. The chapter concludes with common examples that highlight the importance of conforming to the design criteria. (a) Mix with each other These short objective type questions with answers are very important for competitive exams. Ans: b 2. Menu. reciprocating air compressor is best suited for mcq. (Ans: a), For achieving -800C temperature, cascade refrigeration used is B [ ]) 30sin50πt. Q2. View Answer Discuss. Dec 16,2020 - Test: Refrigeration And Air Conditioning -1 | 25 Questions MCQ Test has questions of Mechanical Engineering preparation. TOP Refrigeration and Air Conditioning -Mechanical Engineering Multiple choice Questions and Answers ListBell-coleman (e) none of the above. Correct Answer. 2. Computer Engineering. What is Cascade refrigeration? Two-three-four stage systems are in use. (d) None Vapour Compression Refrigeration Systems:Performance Aspects And Cycle Modifications. 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. Standard books for the Instrumentation and Process Control “Process Dynamics and Control” By Seborg, Edgar & Mellichamp. Properties can be a set in recommended places and the document modified for … B. Biasing circuit. (c) Sensible heat Refrigeration And Air Conditioning MCQ question is the important chapter for a Mechanical Engineering and GATE students. 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 … Watch Queue Queue. Correct Answer. C Sublimation temperature . (b) Total heat C. type MI. Refrigeration And Air Conditioning MCQ question is the important chapter for a Mechanical Engineering and GATE students. D Triple point . A Saturation point of vapour . 0. 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. We strive for the popularization of mathematics teaching … (Ans: b), Cascading refrigeration is applicable for 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. Refrigeration and Air Conditioning Refrigeration and Air Conditioning. Some refrigerants are well suited for high and medium temperature applications, and some are better suited and for a lower temp applications. Pick up the wrong statement. 1) The equation for 25 cycles current sine wave having rms value of 30 amps, will be A [v]) 42.4sin50πt. Clapeyron equation is applicable for registration at_____? Subject: Control Systems 5. 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) Three stage (d) None (b) ≥ Two (d) None (c) Zero 50. A. saturation point of vapor B. saturation point of liquid C. sublimation temperature D. triple point E. critical point. A two stage cascade vapor compression refrigeration system uses ammonia in the low temperature loop and R-12 in the high-temperature loop. HINTS-In some questions options E-HINTS is indicating the hints of answer. In a cascade refrigeration system, two or more vapor-compression cycles with different refrigerants are used. (a) Evaporator of high temperature 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. Important MCQ of GST By CA Vivek Gaba (Expected in Exam) 1. 0. (c) Four stage Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. MCQ Refrigeration Edit Practice Test: Question Set - 01. b. cascade refrigeration system c. vapour absorption refrigeration system d. none of the above View Answer / Hide Answer. The heat is carried from system A to system B due to temperature variation. Some refrigerants are well suited for high and medium temperature applications, and some are better suited and for a lower temp applications. 50 Hz compressor has RPM 3000. a) It increases continuously. 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. Unlike other refrigerants, natural refrigerants are non-synthetic and can be found in nature. MCQ's Search Engine. It is preceded by @ followed by A-Z, a-z or 0-9. Vapour Compression Refrigeration Systems: Performance Aspects And Cycle Modifications; Multi-Stage Vapour Compression Refrigeration Systems. Multiple Choice Question (MCQ) – Process Control. 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. ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) A cascade refrigeration cycle is a multi-stage thermodynamic cycle. Which of the following conductors is applicable for underground service entrance conductors? These short solved questions or quizzes are provided by Gkseries. Automobile Engineering . (b) Vapor compression refrigeration 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. 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. Ans: a 6. Both these processes are reversible and therefore It is the most efficient cycle, as it involves no losses. 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. 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. Cascade refrigeration is applicable to In a cascade system the high/medium temp … RME Board Exam 1995 . If the high-loop temperature requires 10.12 kW compressor power and low loop 15.93 kW, determine the COP of the system. The condition not applicable to water cement ratio law, is ... I.C Engines Multiple Choice Questions with Answers - Set 02. 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. (c) Equal to that of a cascade refrigeration Correct Answer : … Refrigeration & Air-Conditioning MCQ Question with Answer ... Chaperon equation is applicable for registration at . 1. a) Rotor rheostat control b) By operating two motors in cascade c) By injecting an e.m.f. (c) Four stage (Ans: b), In cascade refrigeration, number of refrigerants used is A. LC tank circuit. A. saturation point of vapor B. saturation point of liquid C. sublimation temperature D. triple point E. critical point. 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. 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. NH 3: ODP=0, GWP=0; CO 2: ODP=0, GWP=1; Energy saving NH 3 is the refrigerant … Civil Engineering. b) it remains constant. 1. (d) None in the rotor circuit d) By changing the number of stator poles Electricalunits.com. What is the desirable characteristics of a refrigerant? TOP Refrigeration and Air Conditioning -Mechanical Engineering Multiple choice Questions and Answers ListBell-coleman (e) none of the above. 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. 2. In a refrigeration cycle, the flow of refrigerant is controlled by (A) Compressor (B) Condenser (C) Evaporator (D) Expansion valve. Electrical Engineering. D. type USE. 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. (Ans: c), The refrigerants used in cascade refrigeration Two-three-four stage systems are in use. (d) None Medical Science Engg. Environmental protection Both NH 3 and CO 2 are nature refrigerant. 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. A. type THWN. Electronic Engineering MCQ Question Papers: ENTC, IT Interview Placement. Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. Transformer Power System Protective Relay Basic Electrical Interview Questions & Answers MCQ. 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 (Ans: b), For achieving -1000C temperature, cascade refrigeration used is (b) Do not mix with each other B Saturation point of liquid . 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