However means of compression. This refrigeration system components consists of a compressor, cooler, expander, and refrigerator. objective questions refrigeration marinesite. What is the function of Compressor in an AC refrigeration cycle? d) Ammonia cooled. Correct Answer. Home; vapour, During Refrigeration and Air Conditioning - MCQ - Free download as PDF File (.pdf), Text File (.txt) or read online for free. of 4. If a heat pump is operated between same temperature range, then what would be its COP? A refrigerator based on reversed Carnot cycle works between two such temperatures that the ratio between the low and high temperature is 0.8. The result is a useful equation for calculating the COP R. These questions help in your NEET 2021 preparation. ... 35. This set of Thermodynamics Multiple Choice Questions & Answers (MCQs) focuses on “Absorption Refrigeration Cycle”. Vapour Compression Refrigeration Cycle - MCQs with Answers Q1. (7) Answer: Option C Air in an ideal Diesel cycle is compressed from 3 L to 0.15 L and then it expands during the constant pressure heat addition process to 0.3 L. The COP of the Carnot refrigerator is: The COP of a Carnot refrigeration cycle decreases on, Decreasing the difference in operating temperatures, Keeping the upper temperature constant and increasing the lower temperature, Increasing the upper temperature and keeping the lower temperature constant, Increasing the upper temperature and decreasing the lower temperature. The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is (a) same (b) more (c) less (d) more or less depending on ambient conditions (e) unpredictable. Explanation are given for understanding. Practice Test: Question Set - 10 1. refrigeration amp air conditioning mcq questions mechanical. Pick up the wrong statement. Refrigeration & Air Conditioning MCQ Questions Mechanical Engineering . If the cycle direction be reversed, what will be the value of COP of reversed Carnot cycle Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. Tags: Question 8 . Mechanical Engineering MCQ Question Papers: DRDO, ISRO, Interview. MCQs of Refrigeration Cycles. multiple choice questions and answers on refrigeration and. Compression. Explanation are … Reason (R): Vapour compression refrigeration cycles have high COP compared to air refrigeration cycles. When the evaporator pressure increases but saturated vapor still leaves the evaporator, the coefficient of performance Condenser pressure (MPa) 0.5 liquid vapor evaporator 01 2-phase 300 350 150 200 250 400 450 500 enthalpy (kJ/kg) Figure MCQ 14 A. increases B. decreases C. does not change D. is uncertain 37. 0.2 B. (8) Answer: Option D The required input is the work input, W ref. Q. answer choices . Absorbs heat from the room. A.Evaporator B.Condenser C.Expansion valve D.Compressor E.All of the above Related posts: A Rankine cycle working with saturated steam differs thermodynamically from a Carnot cycle only in the fact that If a discharge pressure of a refrigeration compressor is too high, it shows there is (are) A thermometer in the compressor discharge line The flow of […] In vapour compression cycle, the condition of refrigerant is very wet vapour . What is the minimum power (approximate) required driving the heat pump? B. red. horizontal and non-uniformly spaced lines on a psychrometric chart indicates, It The color of the flame of halide torch, in case of leakage of Freon refrigerant, will change to : A. yellow. accumulation of water in, It 30 seconds . Refrigeration Cycles - Mechanical Engineering (MCQ) questions and answers. A After passing through the condenser . RGPV !! In a refrigeration cycle, heat is rejected by the refrigerant in a (A) expansion valve (B) condenser (C) compressor (D) evaporator. Reason (R): The heat pump is far more economical in operation than electric heater. Air conditioning systems, concept of RSHF, GSHF and ESHF, Cooling load calculations. (10) Answer: Option B The ratio of maximum shear stress to average shear stress in a beam of rectangular section is (a) 1. In vapour compression cycle, the condition of refrigerant is very wet vapour . ... 16 Ammonia-absorption refrigeration cycle requires A very little work input. Refrigeration And Air Conditioning MCQ question is the important chapter for a Mechanical Engineering and GATE students. a. throttling valve b. capillary tube c. either throttling valve or capillary tube d. none of the above View Answer / Hide Answer. 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 & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. 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. To improve the COP of a refrigeration system, the sub-cooling in the condenser should be (a) High (b) Low (c) Zero (d) None (Ans:a) The cooling effect is higher in a (a) Boot strap air refrigeration cycle (b) Bell column cycle (c) Vapor compression cycle (d) None (Ans: c) The boiling point of a liquid increases with the (a) Decrease of pressure Jan 11,2021 - Heat Pump & Refrigeration Cycles And Systems - MCQ Test 2 | 30 Questions MCQ Test has questions of Mechanical Engineering preparation. Pick up the wrong statement. 1. In heat pump we are interested on heat addition to higher temperature side so it is heat extracted + work added. students definitely take this Heat Pump & Refrigeration Cycles And Systems - MCQ Test 1 exercise for a better result in the exam. Next we use the 1st Law to eliminate Wref from the equation. Pick up the wrong statement. In absorption refrigeration cycle, which of the following is used? It condenses the refrigerant vapor to … increased and T2 keeping const. Solution(By Examveda Team) The processes are used for scientific, industrial and commercial purposes. 89. If the building is to be kept at 27°C and heat requirement is at the rate of 30 kW, what is the minimum power required for heat pump? 1. 4. Compresses gas to ensure circulation. 11) Large sized industrial air-conditioning plant are. Refrigeration & Air-Conditioning MCQ Question with Answer Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. Practice Test: Question Set - 01 1. answer choices . 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. 95 TOP Refrigeration and Air Conditioning - Mechanical Engineering Multiple choice Questions and Answers List Latest Refrigeration and Air Conditioning Questions and Answers 1. D. orange. A After passing through the condenser . Absorbs heat from the room. 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Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. 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. 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. It is important to understand the differences between these two cycles. a) refrigerant b) absorbent c) both of the mentioned d) none of the mentioned View Answer In a refrigeration cycle, the desired output is Q C, because the goal is to remove heat from the cold reservoir. Is given as 80 % internal combustion engine increases, then its efficiency will... Chain Drives MCQ Test... Can not coefficient of performance of a refrigerator based on reversed Carnot cycle is 4 it a comprehensive database refrigeration. 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