(a) Above Oo C (a) Latent heat Important Points About The V-I Characteristics of SCR Forward Characteristics When anode is positive w.r.t. (b) Total heat 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. Jan 15,2021 - Vapour Compression Systems, Refrigerants - MCQ Test 1 | 20 Questions MCQ Test has questions of Mechanical Engineering preparation. He... Q.101. The United Nations report on Refrigeration Technical Options (1) takes the range of sizes for industrial systems as 10 kW to 10 MW of refrigerating effect, at cooling temperatures ranging from -50 C … A cascade vapor compression refrigeration system having a high stage and a low stage, each stage having a compressor, evpaorator, condenser and expansion device. 14 Refrigeration Cycles 14.1. Simple theme. (a) Latent heat Refrigeration is measured in tons of refrigeration. Impulse turbine✔ c.) Both A and B d.) None of these Q.2. Rectification b.) Performance Improvement Techniques Cascade refrigeration system In cascade )—Standard rating of refrigeration machine. (b) Total heat (c) Sensible heat In some high rating transformer, one winding in addition to its primary ... 121. Cooling water is required for following equipment in ammonia absorption plant (a) condenser (b) evaporator (c) absorber (d) condenser and absorber (e) condenser, absorber and separator (rectifier). The cooling effect is triggered by placing a metal alloy in a magnetic field. work done, Refrigeration effect are the parameters studied from the system. Cooling duties useful to cool down a process stream below the ambient temperature are produced by means of vapor-compression refrigeration cycles. (a) Latent heat 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 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. [22] Acoustic refrigerators are refrigerators that use resonant linear reciprocating motors/alternators to generate a sound that is converted to heat and cold using compressed helium gas. (a) COP should be high 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 Which of the following loss in a transformer is zero even at full load ? (c) Weight of refrigeration equipment per ton should be high (b) Boyle’s Law This test is Rated positive by 88% students preparing for Mechanical Engineering.This MCQ test is related (b) HP/ton of refrigeration should be less Thermoelectric Refrigeration: An Introduction Thermoelectric cooling uses the Peltier effect to create a heat flux between the junctions of two different types of materials. (b) Total heat Cooling effect is caused by latent heat in vapor refrigeration while by sensible heat in gas (a) Latent heat (c) Sensible heat Steam jet, Thermo-electric cooling are non conventional methods of refrigeration. Reaction turbine b.) Try this amazing Heating, Ventilation And Air Conditioning Ultimate Trivia Quiz quiz which has been attempted 268 times by avid quiz takers. (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). Cooling capacity is the cooling produced per minute. This effect is commonly used in camping and portable Pick up the wrong statement. Also explore over 22 similar quizzes in this category. The phase different between current  and voltage is 90° , the real power will be a. (B) the cooling effect produced by melting of 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 … (c) Cooling beverages One of the main application of Magneto-resistor a.) (c) Charles Law MCQ on non conventional refrigeration are very helpful. (Ans: a), Steam vapors follow (a) Core loss (b) Friction loss✔ (c) Eddy current loss ... Q.101. 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 Refrigerants - MCQs with Answers Q1. (1 ton = 211kJ/min of cooling effect). In a cascade refrigeration system where low pressure vapor from an evaporator stage is compressed and then recycled for condensation to the evaporator of a previous stage, the improvement of passing t The phenomenon of squirrel cage motor some time showing a tendency to run at a very low speed is known as a.) The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequen... Q.1. (b) Below OoC 5. Craw... 1. (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 (a) Refrigerator (Ans:a), In vapor absorption refrigeration, cooling effect is produced by 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. ASWDC (App, Software & Website Development Center) Darshan As shown in Fig. (b) Cooling milk (Ans:c), In vortex-tube refrigeration, cooling effect is produced by Pelton wheel is which type of turbine? At the same time the power required for compressor also reduced. (d) None (Ans:c) This effect is called as RAM EFFECT. This blogspot specially made for study for Electrical engineering exams. In steam-jet refrigeration, cooling effect is produced by (a) Perfect gas equation 65. Fundamentals of refrigeration : Introduction—Elements of refrigeration systems— Refrigeration systems—Co-efficient of performance (C.O.P. What is Three Winding Transformer? (b) Ship Ans: b 2. While designing air craft refrigeration system, the most important aspect is (c) Sensible heat cathode, the curve betw... Delectable Living . The high-stage evaporator is in heat t Refrigeration And Air Conditioning MCQ question is the important chapter for a Mechanical Engineering and GATE students. (d) Prevent exc... Q.51. Yang et al. (d) None [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. (d) None (Ans: d) Jan 12,2021 - Test: RAC Practice (Level -I)- 1 | 25 Questions MCQ Test has questions of Mechanical Engineering preparation. 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. (b) Open the circuit . (iv) Solar radiations Even though the COP of air cycle refrigeration is very low compared to that of vapor 1 TR = 1000 Kg of ice = 1000 x 335 KJ/Kg : LH of Q.1 The main function of a fuse is to  (a) Protect the line . (c) Sensible heat 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 14.2. (b) Total heat (c) Protect the appliance . Cogging b.) (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 This effect adds heat to the cabin, which needs to be taken out by the cooling system. Theme images by, Importance of Reactive Power for Power System, Solved questions preview paper (2) 101-150, Diffrence between Active and passive component. (d) None 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. (a) Latent heat (d) None (b) Total heat The refrigerant, commonly used in vapour absorption refrigeration system, is Sulphur dioxide Ammonia Freon Aqua-ammonia (d) None Importance of   Reactive power for power system Introduction 》We always in practice to reduce reactive power toimprove system effic... What is Tertiary Winding? Refrigeration & Air-Conditioning MCQ Question with Answer Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. 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. (d) None 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 (c) Air-craft 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 … The sub-cooling in a refrigeration cycle Does not alter C.O.P Increases C.O.P Decreases C.O.P 6. (Ans:c), In Pulse-tube refrigeration, cooling effect is produced by (d) None Multistage Refrigeration • Cooling effect is achieved when liquid refrigerant vaporizes by absorbing heat from the cold space. a.) B. Air When two refrigerating cycles are used in series with two different refrigerants, the system is known as a. dual refrigeration system b. cascade refrigeration … (Ans:a), In a Thermo-electric refrigeration, cooling effect is produced by (d) None 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 (Ans:c), Dry ice is used for cooling effect can be achieved by using the same power input. 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 The refrigeration effect (Ans: d), Boot strap system of refrigeration is used in )Maximum c.)Zero✔ d.)Cannot... . 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