As an automobile engineer we will define it as, an atmosphere that provides relax and causes less fatigue to a human which can be achieved by an air conditioning of the particular cabin that includes maintaining the cabin’s temperature between 20 to 25 degree centigrade and removing the humidity from the cabin’s atmosphere, in short by fitting air conditioner in that cabin but now the question arises How is it possible in a car’s cockpit? 2. Ans: b. When should I replace my air conditioner? We'll start with the high-pressure side as it leads from the engine to the passenger compartment:. Refrigeration and Air Conditioning (2161908) MCQ. In the case of Tesla EVs, for example, the AC compressor is located at the front of the car and draws power from the Energy Storage System, or ESS, in the back. - Complete Explanation, How Jet Engine Works? The Nash-Kelvinator corporation used its experience in refrigeration to introduce the automobile industry's first compact and affordable, single-unit heating and air conditioning system optional for its Nash models. Is the air … Required fields are marked *. The refrigeration system cool down the air which include many other parts like compressor,condenser etc. The higher the SEER rating, the more efficient the air conditioner. 2. Here are some things to consider: The age of your air conditioner. 4. In winters a vehicle faces a problem of fog or vapor formation over a front mirror which causes visibility problems and makes it difficult for a driver to drive a car, so it is essential for a vehicle to be equipped with a system that can fight with this problem. So this is how an automobile or car air conditioning system is used in a vehicle which makes the drive comforting and provides health safety to the passengers. Air Compression System Quiz; Air Compression System Quiz 2; HVAC Controls Quiz; EPA 608 Practice Tests; NATE Practice Tests; Oil and Gas Heating; HVAC Electrical Basics Test; EPA 609 Practice Tests; HVAC Journeyman IMC Code Practice Tests C. Temperature What to Know If You’re Planning to Buy a Car in 2021? But in a car it is required due to the following reasons. The most essential component of any air conditioning system is the compressor. Here’s how Natrad performs car air conditioning repair: One of our auto air conditioning technicians will connect the car to a charging station to measure system pressures and begin diagnosing the problem. B. Humidity The first step, as with many diagnostic steps with cars, is to start the car and turn the air con to full. Air Conditioning Controls:_____? A. This vapor having high temperature low pressure is then sent to compressor which in turn increases the pressure over the vapors and converts the vapor refrigerant into liquid refrigerant. 1. Condenser – It is the device looks like a small radiator and is used after the compressor as it provides condensing i.e. Let’s just find out.eval(ez_write_tag([[728,90],'mechanicalbooster_com-medrectangle-3','ezslot_6',619,'0','0'])); A car air conditioning system consists of a compact version of the components of the normal air conditioner that has an evaporator, compressor, condenser, expansion device, and a fan which are fitted in a car to provide air condition inside the passenger’s compartment. 2. Number of repair centers are available in the market, where the technician comes to our home and gets it repaired. 2. 2.) This high pressure and the low-temperature refrigerant is then sent to the expansion valve which in turn releases the pressure from the refrigerant and converts it into its original state. we respect your privacy and take protecting it seriously, What is Steam Condenser - Complete Explanation, What is Heat Exchanger? The air circulating system circulate this cooled air into the car which include blower, air duct etc.The controlling system used to control the temperature of the car by sensing it and control the refrigerating system. Easiest Explanation Ever, Valve Timing Diagram of Two Stroke and Four Stroke Engine. Are you preparing for Air Conditioning And Refrigeration interview? Now the refrigerant is in high pressure and high temperature liquid state. It is the device looks like a small radiator and is used after the compressor as it provides condensing i.e. So, if your air conditioner is more than 10 years old, it may be time for a replacement. It is a device used in car air conditioning system to expand the high pressure, low temperature liquid refrigerant sent by the condenser in order to release pressure of the refrigerant before sending it to evaporator for the further process. MCQs of Vapour Compression System. An HVAC system accounts for approximately what percentage of most Americans' total annual energy bill? Compressor: The compressor is a pump driven by a belt attached to the engine's crankshaft. The minimum SEER allowed by law for newly manufactured air conditioner is 13 or 14, depending on where in the country you live. Refrigeration and Air-Conditioning Multiple Choice Questions with Answers - Set 03 MCQ Refrigeration Edit Practice Test: Question Set - 03. PLEASE COMMENT BELOW WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION. (adsbygoogle = window.adsbygoogle || []).push({}); PakMcqs.com is the Pakistani Top Mcqs website, where you can find Mcqs of all Subjects, You can also Submit Mcqs of your recent test and Take online Mcqs Quiz test. It serves one very fundamental purpose, as well, and that is to cool you down. Car Air-Conditioning Mechanisms and the Role of Compressors Liquid (refrigerant) is cycled throughout a sealed air conditioning system in a repeated process of vaporization (evaporation), liquefaction, and re-vaporization. The compressor of the car air conditioning system is driven by the crankshaft of the engine through the belt drive. Everyday Science Mcqs Everyday Science Mcqs. Basically, the Car Air Conditioner has two different circuits. Circulation of the Air B. Humidity C. Temperature D. All of The Above. What Companies In The Oil Industry Can Do To Enhance Worker Safety? How To Find The Best Sheet Metal Products On The Market? 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. Compressor. D. All of The Above. Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. Blast Furnace: Introduction, Definition,…, What is Stirling Engine - Types, Main Parts, Working…. This high pressure high temperature liquid refrigerant is then sent to the condenser which lowers the temperature of this refrigerant by forced convection provided by the radiator fan or by separated fan used. 1. 5. In this video I explained the MCQ, true false type MCQ with solution and description of answer for a chapter Air conditioning System. He has completed his B.Tech degree in mechanical engineering in the year 2015. The value of C.O.P in vapour compression cycle is usually ... A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. It is a safety catch used in an automobile or car air conditioning system as there is a chance that instead of vapors some liquid also flows towards the compressor which can damage the compressor, so the receiver dryer is used in between evaporator and compressor to convert that remaining liquid into vapors before sending it to compressor for compression. Mcq Added by: Muhammad Ullah. Due to these problems, almost all the vehicle on the road today is equipped with an air conditioning system which now a days becomes the basic need for the human being.eval(ez_write_tag([[250,250],'mechanicalbooster_com-medrectangle-4','ezslot_14',620,'0','0']));eval(ez_write_tag([[250,250],'mechanicalbooster_com-medrectangle-4','ezslot_15',620,'0','1'])); The components of a car’s AC system is almost same as a room’s AC but there are lots of modification made in an automobile AC to make it compact and to fit it with engine’s component. Circulation of the Air For an excellent understanding about the working of a car AC system watch the video given below: Note – Between evaporator and compressor a receiver dryer is used that convert the remaining liquid refrigerant from the evaporator into the vapors before sending it to the compressor. The reduced ambient air cooling system has (A) One cooling turbine and one heat exchanger (B) One cooling turbine and two heat exchangers Refrigeration and Air Conditioning Multiple Choice Questions :-1. 3.) We’ll get the cold air blowing and show you the nice difference in auto repair. In a lithium bromide absorption refrigeration system (A) Lithium bromide … Note – Thermal expansion valve is used in vehicles that enable the passenger to change the temperature according to the requirement, by just adjusting the knob provided over a dash board in passenger’s cabin. HVAC stands for heating, ventilation and air conditioning: A: True B: False. “Human comfort zone” how will you define it? 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