Ans: b 2. 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. (1 ton = 211kJ/min of cooling effect). cooling effect can be achieved by using the same power input. Air 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. (Ans:c), In Pulse-tube refrigeration, cooling effect is produced by 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. Cooling capacity is the cooling produced per minute. (d) None [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) Core loss (b) Friction loss✔ (c) Eddy current loss ... Q.101. One of the main application of Magneto-resistor a.) (b) Total heat B. As shown in Fig. Q.1 The main function of a fuse is to  (a) Protect the line . Cooling duties useful to cool down a process stream below the ambient temperature are produced by means of vapor-compression refrigeration cycles. In steam-jet refrigeration, cooling effect is produced by A cascade vapor compression refrigeration system having a high stage and a low stage, each stage having a compressor, evpaorator, condenser and expansion device. (c) OoC (b) Total heat (c) Sensible heat Performance Improvement Techniques Cascade refrigeration system In cascade a.) This test is Rated positive by 88% students preparing for Mechanical Engineering.This MCQ test is related While designing air craft refrigeration system, the most important aspect is MCQ on non conventional refrigeration are very helpful. )Maximum c.)Zero✔ d.)Cannot... . 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 (b) Ship (a) Latent heat Refrigeration & Air-Conditioning MCQ Question with Answer Refrigeration & Air-Conditioning MCQ with detailed explanation for interview, entrance and competitive exams. The sub-cooling in a refrigeration cycle Does not alter C.O.P Increases C.O.P Decreases C.O.P 6. (b) Below OoC The refrigerant, commonly used in vapour absorption refrigeration system, is Sulphur dioxide Ammonia Freon Aqua-ammonia )—Standard rating of refrigeration machine. (a) Latent heat Refrigerants - MCQs with Answers Q1. 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 … In some high rating transformer, one winding in addition to its primary ... 121. The phase different between current  and voltage is 90° , the real power will be a. (c) Weight of refrigeration equipment per ton should be high This effect adds heat to the cabin, which needs to be taken out by the cooling system. (d) None cathode, the curve betw... Delectable Living . (c) Cooling beverages 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 … (c) Air-craft Thermoelectric Refrigeration: An Introduction Thermoelectric cooling uses the Peltier effect to create a heat flux between the junctions of two different types of materials. (d) Prevent exc... Q.51. 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 (a) Latent heat (b) Open the circuit . Jan 12,2021 - Test: RAC Practice (Level -I)- 1 | 25 Questions MCQ Test has questions of Mechanical Engineering preparation. (Ans:c) Also explore over 22 similar quizzes in this category. 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