It is necessary for a gas to give off heat to liquefy (condense). As we have already mentioned that air conditioning system inside a cabin is required to provide a relaxed and fatigue free atmosphere to the humans which in turn provides comfort which is essential for the health of a human being. This air conditioning system takes power from the engine’s crankshaft and is operated by the passengers from the cockpit by pressing the button assigned to this system. Find Local Help for Your AC & Air Conditioning Questions on HVAC.com 2.) The most efficient air conditioners on the market have SEER ratings of around 22. Next . We’ll get the cold air blowing and show you the nice difference in auto repair. Air conditioning does not only condition the environment inside a passenger’s cabin but also provides filtered air which is very essential in cities like Delhi due to the very hazardous air pollution condition that can cause health issues to the passengers. Relative humidity refers to: A: The amount of moisture in the air B. This compressor works off 400 volts, directs refrigerant through to an independent chilling unit and then cools the air for dispersal through the vents and into the cabin. MCQ of RAC (Refrigeration and air conditioning… Refrigeration and Air Conditioning Multiple Choice Questions :-1. Pankaj Mishra is a blogger by passion and Mechanical Engineer by profession. It is the heat sensitive fluid with very low boiling point that is used in AC as a medium of heat exchanging. 2. The car Air Conditioning system circulates the refrigerant under pressure through these five major components in a closed circuit. Compressor: The compressor is a pump driven by a belt attached to the engine's crankshaft. Subscribe to our mailing list and get interesting stuff and updates to your email inbox. All automotive air conditioning systems are (nearly) closed loops with a high-pressure side and low-pressure side. Next . The life of an air conditioner is somewhere between 10 and 20 years. Pick up the wrong statement. 1. At these points in the system, the refrigerant undergoes preset pressure and temperature changes. Everyday Science Mcqs Everyday Science Mcqs. IF YOU THINK THAT ABOVE POSTED MCQ IS WRONG. 1. We'll start with the high-pressure side as it leads from the engine to the passenger compartment:. MCQ No - 1. 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. 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. Your email address will not be published. Receiver dryer also provide filtering of the system by absorbing the contaminated foreign materials inside the AC system. The refrigeration system cool down the air which include many other parts like compressor,condenser etc. 1) Windows Air-conditioning System Window air conditioners are one of the most commonly used and cheapest type of air conditioners. Car Air Conditioning History . 3. In this video I explained the MCQ, true false type MCQ with solution and description of answer for a chapter Air conditioning System. Air conditioning now comes as standard in almost all newly produced cars and is a feature that most car owners have come to … 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. 4. 1.) The compressor at the heart of your air conditioning system requires energy in order to circulate cold air around the vehicle. It is a device that looks like another heat exchanger and is place just behind the AC vent over a dash board of a car, an evaporator takes heat from the passenger’s compartment and convert the liquid refrigerant sent by the expansion valve into vapor, which in turn provides cooling through the fan inside a passenger’s cabin. C. Temperature In a lithium bromide absorption refrigeration system (A) Lithium bromide … D. All of The Above. The higher the SEER rating, the more efficient the air conditioner. An HVAC system accounts for approximately what percentage of most Americans' total annual energy bill? In this page you can learn various important refrigeration and air-conditioning questions answers,sloved refrigeration and air-conditioning representation questions answers, refrigeration and air-conditioning mcq questions answers etc. Factors to Consider When Buying Your Child Their First Car. 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. When a vehicle is running through cities like Delhi in India, passengers have to face lots of traffic that causes slow motion of vehicle due to which it is essential for a vehicle to be equipped with a system that can provide a comfort zone for the passengers. Refrigeration And Air Conditioning MCQ question is the important chapter for a Mechanical Engineering and GATE students. B. Humidity Now you just need to listen for any unusual noises coming from the air conditioning system. – Best Explanation Ever, How Wind Power Plant Works?- Complete Explanation, A Detailed Guide on Ceramic Coating for Your Car, Top 5 Cheapest Cars in The World With Price And Mileage, A Simplified Guideline to Shopping for the Ideal 4WD Accessories. 2. 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? Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. W ith the mercury expected to hit the mid-30s Centigrade once again in many parts, drivers will be taking full advantage of their car’s air-conditioning system. Now the refrigerant is in high pressure and high temperature liquid state. The minimum SEER allowed by law for newly manufactured air conditioner is 13 or 14, depending on where in the country you live. It is also known as the heart of the AC system, A compressor provide pressure rise to the refrigerant to convert the vapour refrigerant into liquid refrigerant which in turn enables the further flow of the refrigerant through condenser. Circulation of the Air Easiest Explanation Ever, Valve Timing Diagram of Two Stroke and Four Stroke Engine. 2. This refrigerant is then again sent to the evaporator for the further cycle. It is the device looks like a small radiator and is used after the compressor as it provides condensing i.e. 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 Comment document.getElementById("comment").setAttribute( "id", "a3543d7862935c82d7c2596e6a6e9dda" );document.getElementById("ebd2282172").setAttribute( "id", "comment" ); Save my name, email, and website in this browser for the next time I comment. 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. Condenser – It is the device looks like a small radiator and is used after the compressor as it provides condensing i.e. 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. Who will provide power to the air conditioner in a car? Feeling curious? 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. Mcq Added by: Muhammad Ullah. MCQs of Air-Conditioning Systems. 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. which will improve your skill. Car air conditioning is a system within your car that allows you to cool the interior air of the vehicle in hot weather, providing for a cooler environment for the occupants. The evaporator which is the another heat exchanger used in AC takes heat from the passenger’s cabin which in turn converts the liquid refrigerant flowing through the evaporator into vapors which in turn provide cooling with the help of the blower fan. If you think your car’s air conditioning isn’t up to scratch, come visit your local auto repair experts at Christian Brothers Automotive in Buda, Texas, near Kyle. Your email address will not be published. Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07 MCQ Refrigeration Edit Practice Test: Question Set - 07. Is the air … A. Home » Refrigeration and Air Conditioning Objective type Questions and Answers » 95 TOP Refrigeration and Air Conditioning - Mechanical Engineering Multiple choice Questions and Answers List Sunday, 31 August 2014 With the air conditioning on full, now you need to feel the air coming out of your vents. Refrigeration and Air-Conditioning Multiple Choice Questions with Answers - Set 03 MCQ Refrigeration Edit Practice Test: Question Set - 03. Air Conditioning And Refrigeration is the electronic device where the temperature is maintained accordingly as per the need and relieves from the scorching heat. 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. Compressor. He loves to share his knowledge and help others. The first step, as with many diagnostic steps with cars, is to start the car and turn the air con to full. It serves one very fundamental purpose, as well, and that is to cool you down. 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. The reduced ambient air cooling system has (A) One cooling turbine and one heat exchanger (B) One cooling turbine and two heat exchangers Required fields are marked *. How To Find The Best Sheet Metal Products On The Market? 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. Your email address will not be published. Ans: b. Now the refrigerant is having low temperature but the pressure of the liquid is almost the same. Rising energy bills. When should I replace my air conditioner? 1. Replacing your air conditioner is an investment. The compressor of the car air conditioning system is driven by the crankshaft of the engine through the belt drive. Are you preparing for Air Conditioning And Refrigeration interview? 3.) we respect your privacy and take protecting it seriously, What is Steam Condenser - Complete Explanation, What is Heat Exchanger? 2. 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. It gets the energy from the engine so when the air conditioning system is turned on you will also be using more fuel. It concerns automotive air-conditioning in particular because there, the freon hose operates in the engine compartment, tightly packed and bent, in high ambient temperature conditions, exposed to vibrations and in contact with car fluids. What Companies In The Oil Industry Can Do To Enhance Worker Safety? Multiple Choice Questions on Refrigeration and Air-Conditioning - Set 08 MCQ Refrigeration Edit Practice Test: Question Set - 08 . Otherwise component damage will occur. Circulation of the Air B. Humidity C. Temperature D. All of The Above. 7 Skills Engineering Students Should Develop Today To Remain Relevant Tomorrow, How to Fix an Ignition Key That Doesn’t Turn. 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. He has completed his B.Tech degree in mechanical engineering in the year 2015. That said, using the air con comes at a price too. When a car is driven or parked in the sun, heat enters the vehicle from many sources. If you find this article informative and useful than don,t forget to share it. Here are some things to consider: The age of your air conditioner. The vapour compression refrigerator employs the following cycle (A) Rankine (B) Brayton ... Duct Design and Air Distribution; 11. - Complete Explanation, How Jet Engine Works? HVAC stands for heating, ventilation and air conditioning: A: True B: False. Blast Furnace: Introduction, Definition,…, What is Stirling Engine - Types, Main Parts, Working…. But in a car it is required due to the following reasons. 1. So, if your air conditioner is more than 10 years old, it may be time for a replacement. 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. Number of repair centers are available in the market, where the technician comes to our home and gets it repaired. 1.2 Air-Conditioning Systems Depending on applications, there are several options / combinations of air conditioning, which are available for use: § Air conditioning (for space or machines) § Split air conditioners § Fan coil units in a larger system § Air handling units in a larger system 1.3 Refrigeration Systems (for processes) 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. Here you will find the General Science Multiple Choice Questions Mcqs are from Biology, Chemistry, Physics and Atmospheric Studies. Why Choose CNC Aluminum Over Other Metals For Prototyping? To install one of these units, you need the space to make a slot in the wall, and there should also be some open space behind the wall. Practice Test: Question Set - 07 1. There is lots of climate change in countries like India during a long run of a vehicle which can cause health issues to the passengers, so a vehicle should be equipped with a system that can maintain a human comfort zone in passenger’s cabin throughout the journey. Car air conditioning repair is an essential service that all car owners should consider every few years. Hey, In this animation I explain the basics of how a vehicles AC system works. (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. In 1954, the Nash Ambassador was the first American automobile to have a front-end, fully integrated heating, ventilating, and air-conditioning system. MCQs of Vapour Compression System. lowers the temperature, of the high pressure and high temperature liquid refrigerant sent by compressor through forced convection provided either by radiator fan or by separated fan used with condenser. Anti-lock Braking System (ABS) – Working Principle, Main Components with Advantages and Disadvantages, How Automatic Transmission Works? Why do We Need an Automobile or Car Air Conditioning System? Required fields are marked *. The components used in automobile AC are-. In an air conditioning system freezing must be avoided. Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. MCQ No - 1. 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. Basically, the Car Air Conditioner has two different circuits. 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. 5. Air conditioning system used for (A) cooling (B) heating (C) dehumidifying (D) all of these Answer D. MCQ No - 2. Air Conditioning Controls:_____? Air-Conditioning Systems A: 10 to 15 percent B: 20 to 25 percent C: 30 to 35 percent D: 40 to 55 percent. What to Know If You’re Planning to Buy a Car in 2021? PLEASE COMMENT BELOW WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION. Submitted by: Muhammad Ullah. 1. The compressor of the car air conditioning system is driven by the crankshaft of the engine through the belt drive. 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. Refrigeration and Air Conditioning (2161908) MCQ. Your email address will not be published. A. In India during summers there is lots of hot and humid air in the atmosphere which causes difficulty for a driver to drive and also for the passengers to travel, so during summer, an effective air conditioning system is required in a car which can provide a cool and humid free environment inside a passenger’s compartment. The most essential component of any air conditioning system is the compressor. 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. An automotive air conditioning system works a lot like the AC system that you have at home or the office. When the refrigerant is drawn into the compressor, it is in a low-pressure gaseous form. This was the year Chrysler made big advances in their air-temp trunk mounted cooling system. Although air-conditioning was available in the 40s on a few Packard and Cadillac models, it wasn't until 1953 when new technology took the system to the next level. “Human comfort zone” how will you define it? The working of an automobile AC system is also almost same as the normal AC but little difference is there-. , Working… side and low-pressure side two Stroke and Four Stroke engine Refrigeration system cool down the air which many... Refers to: a: True B: False ( B ) Brayton... Design! Necessary for a replacement home and gets it repaired very fundamental purpose, as well, and is! The normal AC but little difference is there- to 35 percent D: 40 to 55 percent to you... Between 10 and 20 years conditioner has two different circuits the life of automobile... Furnace: Introduction, Definition, …, what is Steam condenser - Complete Explanation, what is Stirling -. Must be avoided on you will also be using more fuel to listen for any unusual noises from. Refrigerator employs the following cycle ( a ) Rankine ( B ) Brayton... Duct Design air... Liquid state and relieves from the air which include many other parts like,... And help others again sent to the evaporator for the further cycle you live may! ) Windows Air-Conditioning system Window air conditioners on the market turned on you find. Due to the engine 's crankshaft hvac stands for heating, ventilation and air on... Is used after the compressor Metals for Prototyping the Best Sheet Metal Products on the market have SEER ratings around... Our home and gets it repaired ABS ) – working Principle, Main Components with Advantages and Disadvantages how. Have SEER ratings of around 22 re Planning to Buy a car in 2021 students should Develop Today Remain. Cheapest type of air conditioners are one of the system, the refrigerant is in high pressure and changes! His B.Tech degree in Mechanical Engineering in the country you live annual energy?... Refrigerant undergoes preset pressure and temperature changes your air conditioner in a car is driven or parked in air... B. Humidity C. temperature D. All of the air B. Humidity C. temperature D. All the. We need an automobile or car air conditioning: a: 10 to percent. Low boiling point that is to mcq on car air conditioning system the car and turn the air conditioning full... I explain the basics of how a vehicles AC system is turned on you also! Temperature changes so, if your air conditioning on full, now you need to listen for unusual... B ) Brayton... Duct Design and air conditioning and Refrigeration interview to 15 B... Driven by the crankshaft of the liquid is almost the same Industry Can do to Worker... And turn the air conditioning mcq on car air conditioning system is also almost same as the normal AC but difference! Inside the AC system is driven or parked in the system by the! ) Rankine ( B ) Brayton... Duct Design and air conditioning and mcq on car air conditioning system interview efficient the air con at... Advantages and Disadvantages, how Automatic Transmission works AC system works condenser - Complete Explanation, what is Exchanger! Science multiple Choice Questions Mcqs are from Biology, Chemistry, Physics and Atmospheric.. Requires energy in order to circulate cold air blowing and show you nice... Edit Practice Test: Question Set - 07 respect your privacy and take protecting it seriously, what Steam... Car it is necessary for a Mechanical Engineering in the Oil Industry Can do to Enhance Safety.: 20 to 25 percent C: 30 to 35 percent D: 40 to 55 percent Oil Industry do. Informative and useful than don, t forget to share his knowledge and help others a... Is an essential service that All car owners should consider every few years now you just to. Their air-temp trunk mounted cooling system the year 2015 are you preparing for conditioning... Country you live it provides condensing i.e the same ( ABS ) – Principle. Refers to: a: 10 to 15 percent B: 20 to 25 percent C: to. Is used in AC as a medium of heat exchanging more than 10 years old, it is high. Freezing must be avoided turned on you will find the Best Sheet Metal Products on market. The nice difference in auto repair and air conditioning system requires energy order! ’ ll get the cold air blowing and show you the nice difference auto. Car air conditioning system freezing must be avoided CORRECT answer and ITS DETAIL Explanation solution and description answer! In auto repair one very fundamental purpose, as with many diagnostic steps with cars, is to the... Fix an Ignition Key that Doesn ’ t turn ; 11 it serves very... Full, now you just need to feel the air conditioning system the normal AC but little difference is.. Boiling point that is to start the car air conditioning system system ( ABS ) working! Compressor as it provides condensing i.e Humidity C. temperature D. All of the liquid is the... Don, t forget to share his knowledge and help others Key that ’. Of the engine through the belt drive is in high pressure and temperature changes is also almost as... With CORRECT answer and ITS DETAIL Explanation conditioners on the market, where the comes!, t forget to share his knowledge and help others energy bill refrigerant! In their air-temp trunk mounted cooling system MCQ with solution and description of answer for a air... Our mailing list and get interesting stuff and updates to your email inbox is Exchanger. Gets it repaired factors to consider: the compressor as it provides condensing.. The market to Fix an Ignition Key that Doesn ’ t turn off heat to liquefy ( )... Do we need an automobile or car air conditioning MCQ Question is the important chapter a! To consider when Buying your Child their first car different circuits of most Americans total... Passion and Mechanical Engineer by profession Window air conditioners the life of an automobile or car conditioner! Of any air conditioning and Refrigeration is the important chapter for a replacement …, what Stirling... By law for newly manufactured air conditioner Ignition Key that Doesn ’ turn! His B.Tech degree in Mechanical Engineering and GATE students Stirling engine - Types, Main Components with Advantages Disadvantages... A blogger by passion and Mechanical Engineer by profession and 20 years conditioning systems are ( nearly ) closed with. Conditioners on the market Ever, Valve Timing Diagram of two Stroke and Stroke. That All car owners should consider every few years vapour compression refrigerator employs the reasons. Required due to the evaporator for the further cycle Diagram of two Stroke and Four engine. How to Fix an Ignition Key that Doesn ’ t turn pressure of the liquid is almost the same was... Ll get the cold air around the vehicle ; 11 here you will find the Best Metal... “ Human comfort zone ” how will you define it degree in Mechanical Engineering and GATE students Braking (! Gaseous form their air-temp trunk mounted cooling system have SEER ratings of around 22 will provide power the. The Best Sheet Metal Products on the market have SEER ratings of around 22 driven by crankshaft! Essential service that All car owners should consider every few years 25 percent C: 30 to 35 percent:... Refrigeration is the compressor as it provides condensing i.e con comes at price! Show you the nice difference in auto repair how will you define it scorching heat that said, the. Low-Pressure gaseous form the minimum SEER allowed by law for newly manufactured air conditioner is more 10! Some things to consider when Buying your Child their first car - Set.... Filtering of the car air conditioning and Refrigeration is the device looks like a small radiator and used... Answer for a replacement protecting it seriously, what is Steam condenser - Explanation! Completed his B.Tech degree in Mechanical Engineering and GATE students that said, using the air con to full that! - Set 07 MCQ Refrigeration Edit Practice Test: Question Set - 07 Air-Conditioning system Window air conditioners on market. Step, as well, and that is to start the car and turn the air B. Humidity C. D.! By absorbing the contaminated foreign materials inside the AC system works price too Mcqs from. Which include many other parts like compressor, it is the device looks like a small radiator and is after! Amount of moisture in the air B. Humidity C. temperature D. All of the car air system... Electronic device where the technician comes to our mailing list and get interesting stuff and updates to your email.! Oil Industry Can do to Enhance Worker Safety using the air B. Humidity C. temperature D. All of the B.... The liquid is almost the same so, if your air conditioner is more than 10 years,... Mechanical Engineer by profession leads from the air coming out of your conditioner. Total annual energy bill Chrysler made big advances in their air-temp trunk cooling. Set 07 the scorching heat 20 to 25 percent C: 30 to percent... This was the year 2015 get the cold air blowing and show you the nice difference in repair... Get the cold air around the vehicle Main parts, Working…, that. Share it you THINK that Above POSTED MCQ is WRONG conditioners are of... Vapour compression refrigerator employs the following reasons you ’ re Planning to a! It provides condensing i.e define it points in the system by absorbing the contaminated foreign inside. Annual energy bill that Doesn ’ t turn Stirling engine - Types, Main with! Of any air conditioning repair is an essential service that All car should... The basics of how a vehicles AC system is turned on you will also be using more.... Belt attached to the passenger compartment: Explanation Ever, Valve Timing Diagram of two and...
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