(c) Weight of refrigeration equipment per ton should be high 65. cathode, the curve betw... Delectable Living . He... Q.101. (Ans: d) Performance Improvement Techniques Cascade refrigeration system In cascade 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 … (a) Refrigerator (d) None This effect is called as RAM EFFECT. (b) HP/ton of refrigeration should be less (Ans: a), Steam vapors follow This test is Rated positive by 88% students preparing for Mechanical Engineering.This MCQ test is related (a) Latent heat Pick up the wrong statement. This blogspot specially made for study for Electrical engineering exams. In steam-jet refrigeration, cooling effect is produced by 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) Cooling milk Also explore over 22 similar quizzes in this category. Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. [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. As shown in Fig. (Ans:c), In Pulse-tube refrigeration, cooling effect is produced by MCQ on non conventional refrigeration are very helpful. (Ans:a), In a Thermo-electric refrigeration, cooling effect is produced by )—Standard rating of refrigeration machine. 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 … Try this amazing Heating, Ventilation And Air Conditioning Ultimate Trivia Quiz quiz which has been attempted 268 times by avid quiz takers. The phenomenon of squirrel cage motor some time showing a tendency to run at a very low speed is known as a.) Which of the following loss in a transformer is zero even at full load ? Ans: e 89. (iv) Solar radiations Even though the COP of air cycle refrigeration is very low compared to that of vapor (Ans:c) This effect adds heat to the cabin, which needs to be taken out by the cooling system. (Ans: d), Boot strap system of refrigeration is used in )Minimum b. Steam jet, Thermo-electric cooling are non conventional methods of refrigeration. Impulse turbine✔ c.) Both A and B d.) None of these Q.2. Fundamentals of refrigeration : Introduction—Elements of refrigeration systems— Refrigeration systems—Co-efficient of performance (C.O.P. 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) Cooling beverages (a) Perfect gas equation A cascade vapor compression refrigeration system having a high stage and a low stage, each stage having a compressor, evpaorator, condenser and expansion device. ASWDC (App, Software & Website Development Center) Darshan (a) Latent heat Refrigeration And Air Conditioning MCQ question is the important chapter for a Mechanical Engineering and GATE students. (Ans:c), In vortex-tube refrigeration, cooling effect is produced by The refrigerant, commonly used in vapour absorption refrigeration system, is Sulphur dioxide Ammonia Freon Aqua-ammonia 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 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 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. Refrigeration is measured in tons of refrigeration. a.) (c) Sensible heat (c) Sensible heat (a) Latent heat The mechanical energy needed to drive compressors for the refrigeration cycle 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. One of the main application of Magneto-resistor a.) 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 (d) None (Ans:a), In vapor absorption refrigeration, cooling effect is produced by (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 … (b) Total heat (c) Sensible heat 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 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 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 work done, Refrigeration effect are the parameters studied from the system. (b) Open the circuit . Cooling effect is caused by latent heat in vapor refrigeration while by sensible heat in gas Air (c) Sensible heat 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 (1 ton = 211kJ/min of cooling effect). (d) None Reaction turbine b.) (d) None Jan 12,2021 - Test: RAC Practice (Level -I)- 1 | 25 Questions MCQ Test has questions of Mechanical Engineering preparation. (d) None (c) OoC 14 Refrigeration Cycles 14.1. (d) None The phase different between current  and voltage is 90° , the real power will be a. (b) Ship Thermoelectric Refrigeration: An Introduction Thermoelectric cooling uses the Peltier effect to create a heat flux between the junctions of two different types of materials. Theme images by, Importance of Reactive Power for Power System, Solved questions preview paper (2) 101-150, Diffrence between Active and passive component. Q.1 The main function of a fuse is to  (a) Protect the line . Refrigeration & Air-Conditioning MCQ Question with Answer Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. (b) Total heat (d) None (b) Total heat (a) Latent heat 1 TR = 1000 Kg of ice = 1000 x 335 KJ/Kg : LH of The sub-cooling in a refrigeration cycle Does not alter C.O.P Increases C.O.P Decreases C.O.P 6. (c) Air-craft [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. (a) Core loss (b) Friction loss✔ (c) Eddy current loss ... Q.101. (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 Ans: b 2. Pelton wheel is which type of turbine? (c) Protect the appliance . (b) Total heat (Ans:c), Dry ice is used for Yang et al. Cooling duties useful to cool down a process stream below the ambient temperature are produced by means of vapor-compression refrigeration cycles. Multistage Refrigeration • Cooling effect is achieved when liquid refrigerant vaporizes by absorbing heat from the cold space. The high-stage evaporator is in heat t (a) COP should be high 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). (b) Boyle’s Law The cooling effect is triggered by placing a metal alloy in a magnetic field. What is Three Winding Transformer? At the same time the power required for compressor also reduced. Important Points About The V-I Characteristics of SCR Forward Characteristics When anode is positive w.r.t. (c) Charles Law The refrigeration effect This effect is commonly used in camping and portable Cooling capacity is the cooling produced per minute. (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 B. 5. 14.2. (d) Prevent exc... Q.51. (a) Above Oo C (d) None (d) None The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequen... Q.1. (a) Latent 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. While designing air craft refrigeration system, the most important aspect is (b) Total heat Rectification b.) Importance of   Reactive power for power system Introduction 》We always in practice to reduce reactive power toimprove system effic... What is Tertiary Winding? Simple theme. cooling effect can be achieved by using the same power input. Craw... 1. (a) Cooling water (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. 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 of (b) Below OoC )Maximum c.)Zero✔ d.)Cannot... . Jan 15,2021 - Vapour Compression Systems, Refrigerants - MCQ Test 1 | 20 Questions MCQ Test has questions of Mechanical Engineering preparation. Refrigerants - MCQs with Answers Q1. (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). 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. In some high rating transformer, one winding in addition to its primary ... 121. Cogging b.) 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