(c) Protect the appliance . https://www.mesubjects.net/wp-admin/post.php?post=4410&action=edit       Open and Hermetically sealed compressor units, https://www.mesubjects.net/wp-admin/post.php?post=5067&action=edit      Refrigeration equipment-2, https://www.mesubjects.net/wp-admin/post.php?post=5065&action=edit      Refrigeration equipment-1, https://www.mesubjects.net/wp-admin/post.php?post=4198&action=edit      MCQ Vapor Compression Refrigeration, Steam-jet water vapor refrigeration is used for creating temperatures Craw... 1. Multistage Refrigeration • Cooling effect is achieved when liquid refrigerant vaporizes by absorbing heat from the cold space. (c) Air-craft Page-7 section-1 Page-7 section-1 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. One ton of the refrigeration is a) The standard unit used in refrigeration problems b) The cooling effect produced by melting 1 ton of ice c) The refrigeration effect to freeze 1 ton of water at 0 C into ice at 0 C in 24 hours d) The While designing air craft refrigeration system, the most important aspect is (c) Weight of refrigeration equipment per ton should be high (Ans: d), Boot strap system of refrigeration is used in (a) Cooling water One of the main application of Magneto-resistor a.) (Ans: d) )Maximum c.)Zero✔ d.)Cannot... . (a) Core loss (b) Friction loss✔ (c) Eddy current loss ... Q.101. What is Three Winding Transformer? 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) the standard unit used in refrigeration problems (b) the cooling effect produced by melting 1 ton of ice (c) the refrigeration effect to freeze 1 ton of water at 0 C into ice at 0 C in 24 hours (d) the refrigeration effect to produce 1 ton Yang et al. Cooling effect is caused by latent heat in vapor refrigeration while by sensible heat in gas However, for rich gas, such as shale gas, with a higher ethane content, a lower refrigerant temperature is required to meet the pipeline gas heating value specifications. B. (c) Sensible heat 11.2.2 Cascade Refrigeration Propane refrigeration can produce refrigeration at −40°F, which is adequate for the hydrocarbon dew point controlling operation for pipeline gas applications. Manufacturer of Refrigeration And Air Conditioning Lab Equipment - RAC Components Cut Sections Display & Accessories, Vapour Compression Refrigeration System Test Rig, Cut Section Of Compressor and Cascade Refrigeration Test Rig offered by Xtreme … (d) None (d) Prevent exc... Q.51. (Ans:c) (Ans:c), In Pulse-tube refrigeration, cooling effect is produced by (d) None The sub-cooling in a refrigeration cycle Does not alter C.O.P Increases C.O.P Decreases C.O.P 6. One ton of the refrigeration is (A) The standard unit used in refrigeration problems (B) The cooling effect produced by melting 1 ton of ice (C) The refrigeration effect to freeze 1 ton of water at 0 C into ice at 0 C in 24 hours (D) The MCQ Topic Outline included in ME Board Exam Syllabi 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 MCQ in (b) Open the circuit . The mechanical energy needed to drive compressors for the refrigeration cycle (a) Latent heat (b) Cooling milk When two refrigerating cycles are used in series with two different refrigerants, the system is known as a. dual refrigeration system b. cascade refrigeration … (c) Sensible heat (Ans:c), In vortex-tube refrigeration, cooling effect is produced by In steam-jet refrigeration, cooling effect is produced by (Ans: a), Steam vapors follow (b) Below OoC Which of the following loss in a transformer is zero even at full load ? Air Also explore over 22 similar quizzes in this category. (A) The standard unit used in refrigeration problems (B) The cooling effect produced by melting 1 ton of ice (C) The refrigeration effect to freeze 1 ton of water at 0 C into ice at 0 C in 24 hours (D) The refrigeration effect to produce (a) Latent heat (a) Above Oo C As shown in Fig. (b) Total heat Cogging b.) (b) Total heat Impulse turbine✔ c.) Both A and B d.) None of these Q.2. cooling effect can be achieved by using the same power input. 65. (b) HP/ton of refrigeration should be less (c) Sensible heat (b) Total heat (b) Total heat 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. (Ans: d), The pressure inside the flash chamber of a Steam Jet Refrigeration System is, The range of temperature inside the flash chamber of a Steam Jet Refrigeration System is, The mass of steam required required per kg of water vapor removed from the flash chamber in a steam jet refrigeration system is, Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window). Reaction turbine b.) Fundamentals of refrigeration : Introduction—Elements of refrigeration systems— Refrigeration systems—Co-efficient of performance (C.O.P. )Minimum b. (iv) Solar radiations Even though the COP of air cycle refrigeration is very low compared to that of vapor 5. Q.1 The main function of a fuse is to  (a) Protect the line . (c) OoC (b) Ship 14.2. a.) The concept is that the cooling produced in first cycle evaporator is used to cool the condenser of second cycle, which reduces the cooling capacity in Cooling duties useful to cool down a process stream below the ambient temperature are produced by means of vapor-compression refrigeration cycles. [149] proposed a cascade refrigeration process that integrated a LiBr absorption refrigeration with a NH 3 absorption refrigeration for applications to a coal-to-SNG plant. Refrigeration & Air-Conditioning MCQ Question with Answer Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. The phase different between current  and voltage is 90° , the real power will be a. (c) Cooling beverages At the same time the power required for compressor also reduced. In Cascade refrigeration, cooling effect is produced by (a) Latent heat (b) Total heat (c) Sensible heat (d) None (Ans:a) The ratio of COP of a two stage Cascade refrigeration system vs three stage cascade system is (a) < 1 This blogspot specially made for study for Electrical engineering exams. Ans: b 2. (b) Boyle’s Law This effect is called as RAM EFFECT. (d) None (d) None Refrigerants - MCQs with Answers Q1. Unit of refrigeration is TR (ton of refrigeration) It is defined as the amount of refrigeration effect produced by uniform melting 0of one ton of ice at 0 C with in 24 hours. Thermoelectric Refrigeration: An Introduction Thermoelectric cooling uses the Peltier effect to create a heat flux between the junctions of two different types of materials. This amazing Heating, Ventilation and Air Conditioning Ultimate Trivia quiz quiz which has been attempted 268 times avid! 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