(d) None Cascade refrigeration is applicable to (a) Air refrigeration (b) Vapor compression refrigeration (c) Vapor absorption refrigeration (d) None (Ans: b) A Vapor Compression Refrigeration system has a 281W, 50 Hz compressor with displacement 11.1 cm3/rev. Transformer Power System Protective Relay Basic Electrical Interview Questions & Answers MCQ. Home. Gonit Sora গণিত চ’ৰা is a multi lingual (English and Assamese) web magazine devoted to publishing well written and original articles related to science in general and mathematics in particular. Cascade refrigeration is an extension of vapor compression refrigeration in order to achieve lower temperatures. What is the desirable characteristics of a refrigerant? Multiple Choice Questions and Answers on Control Systems Multiple Choice Questions and Answers By Sasmita January 9, 2020 1) Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of … Mechanical Engineering Refrigeration and Air Conditioning Important MCQ 1. (a) Mix with each other The ammonia provides 15 tons of cooling. 2. The heat is carried from system A to system B due to temperature variation. (Ans:a), The COP of a single stage vapor compression refrigeration working between the same temperature limits is C. Transistor. Unlike other refrigerants, natural refrigerants are non-synthetic and can be found in nature. Go To Download Page Close. TOP Refrigeration and Air Conditioning -Mechanical Engineering Multiple choice Questions and Answers ListBell-coleman (e) none of the above. B [ ]) 30sin50πt. Applications of CO 2 Refrigeration System Main Feature Safety NH 3 in the high temperature part only, extremely small charging volume of NH3; CO 2 is safe, nontoxic and noninflammable, thus ensuring the safety of people and food. ELECTRICAL ENGINEERING IMPORTANT MCQ-BASIC ELECTRICAL PART THREE. B Saturation point of liquid . (b) Comfort air conditioning https://www.mesubjects.net/wp-admin/post.php?post=4188&action=edit         MCQ Vapor Absorption refrigeration-1, https://www.mesubjects.net/wp-admin/post.php?post=4105&action=edit       Q.A. Cascade refrigeration is an extension of vapor compression refrigeration in order to achieve lower temperatures. 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. Mechanical Engineering. Medical Science Engg. The colour of the flame of halide torch, in case of leakage of Freon refrigerant, will change to (A) Bright green (B) Yellow (C) Red (D) Orange. Subject: Control Systems 5. Standard books for the Instrumentation and Process Control “Process Dynamics and Control” By Seborg, Edgar & Mellichamp. The value of C.O.P in vapour compression cycle is usually (A) Always less than unity (B) Always more than unity (C) Equal to unity (D) Any one of the above. ANSWER: b. cascade refrigeration system . Two-three-four stage systems are in use. ANSWER KEY-Correct answer is indicated by symbol (V) in options. (Ans: c), The refrigerants used in cascade refrigeration c) It decreases monotonically (Ans: c), In cascade refrigeration, condenser of low temperature refrigeration is coupled with Page-2 section-4 Two-three-four stage systems are in use. NH 3: ODP=0, GWP=0; CO 2: ODP=0, GWP=1; Energy saving NH 3 is the refrigerant … In vapor compression cycle, the condition of refrigerant is very wet vapor_____? 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. reciprocating air compressor is best suited for mcq. Electrical Engineering. Vapor Compression Refrigeration-1, https://www.mesubjects.net/wp-admin/post.php?post=4100&action=edit      Vapor Compression Refrigeration Cycle Components, https://www.mesubjects.net/wp-admin/post.php?post=4095&action=edit       Q.A. Energy-efficient CO2 cascade refrigeration system Designed utilising the subcritical refrigeration cycle in a cascade arrangement to refrigerate the low temperature group of merchandisers and freezers through direct expansion of the CO2 refrigerant Cascade refrigeration is a term you will hear more and more over the coming years, and while some of the systems may be very complex, the concept is actually pretty simple. Correct Answer : … D. type USE. 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