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GATE Past Year Questions: Internal Combustion Engine | Thermodynamics - Mechanical Engineering PDF Download

Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself: In air standard Ottocycle the terminal pressures at the end of compression, heat release and expansion are respectively P2, P3 and P4. If the corresponding values are P2, P3, and P4, taking into account the effect of variable specific heat and dissociation of the working fluid, then

'[1989 : 2 Marks]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:An air standard diesel cycle consists of

[1990]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:With increasing temperature of intake air, CI engine efficiency

[1998]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:An IC engine has a bore and stroke of 2 units each. The area to calculate heat loss can be taken as

[1998]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:An air breathing air craft is flying at an altitude where the air density is half the value at ground level. With reference to the ground level, the air- fuel ratio at this altitude will be
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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:In a spark ignition engine working on the ideal Otto cycle, the compression ratio is 5.5. The work output per cycle (i.e., area of the P – V diagram) is equal to 23.625 × 105 × VcJ, where VC is the clearance volume in m3. The indicated mean effective pressure is

[2001]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:An ideal air standard Otto cycle has a compression ratio of 8.5. If the ratio of the specific heats of air (g) is 1.4, what is the thermal efficiency (in percentage) of the Otto cycle?

[2002]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:For an engine operating on air standard Otto cycle, the clearance volume is 10% of the swept volume. The specific heat ratio of air is 1.4.The air standard cycle efficiency is

[2003]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:An engine working on air standard Otto cycle has a cylinder diameter of 10 cm and stroke length of 15 cm. The ratio of specific heats for air is 1.4. If the clearance volume is 196.3 cc and the heat supplied per kg of air per cycle is 1800 kJ/kg, the work output per cycle per kg of air is

[2004]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:The stroke and bore of a four stroke spark ignition engine are 250 mm and 200 mm respectively. The clearance volume is 0.001 m3.If the specific heat ratio g = 1.4, the air-standard cycle efficiency of the engine is

[2007]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:Which one of the following is NOT a necessary assumption for the air-standard Otto cycle?

[2008]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:In an air-standard Otto cycle, the compression ratio is 10. The condition at the beginning of the compression process is 100 kPa and 27°C.Heat added at constant volume is 1500 kJ/kg, while 700 kJ/kg of heat is rejected during the other constant volume process in the cycle.Specific gas constant for air = 0.287 kJ/kgK.The mean effective pressure (in kPa) of the cycle is

[2009]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:The crank radius of a single-cylinder IC engine is 60 mm and the diameter of the cylinder is 80 mm. The swept volume of the cylinder in cm3 is

[2011]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:For the same values of peak pressure, peak temperature and heat rejection, the correct order of efficiencies for Otto, Duel and Diesel cycles is

[2015]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:The power output from a spark ignition engine is varied by

[1990]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:For determining the ignition quality of compression ignition engine fuels, the reference fuels used are

[1991]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:If air fuel ratio of the mixture in petrol engine is more than 15:1

[1991]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:Alcohols are unsuitable at diesel engine fuels because

[1992]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:Knocking tendency in a Sl engine reduces with increasing

[1993]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:In order to burn 1 kilogram of CH4 completely, the minimum number of kilograms of oxygen needed is (take atomic weights of H, C and O as 1, 12 and 16 respectively)

[1995]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:The silencer of an internal combustion engine

[1999]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:A diesel engine is usually more efficient than a spark ignition engine because

​[2003]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:At the time of starting, idling and low speed operation, the carburettor supplies a mixture which can be termed as

[2004]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:BHP of a diesel engine can be increased by

[1991]

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Question for GATE Past Year Questions: Internal Combustion Engine
Try yourself:Brake thermal efficiency of the three basic types of reciprocating engines commonly used in road vehicles are given in the increasing order as

[1992]

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FAQs on GATE Past Year Questions: Internal Combustion Engine - Thermodynamics - Mechanical Engineering

1. What is an internal combustion engine?
Ans. An internal combustion engine is a type of heat engine that generates power by burning fuel within a combustion chamber. It is commonly used in vehicles and other machinery to convert the chemical energy of fuel into mechanical energy.
2. How does an internal combustion engine work?
Ans. An internal combustion engine works by sucking in a mixture of fuel and air into a combustion chamber, compressing it, igniting it with a spark plug, and allowing the rapid expansion of gases to drive a piston. This linear motion is then converted into rotary motion, which powers the vehicle or machinery.
3. What are the different types of internal combustion engines?
Ans. There are several types of internal combustion engines, including gasoline engines, diesel engines, rotary engines, and two-stroke engines. Each type has its own unique design and operating principles, but they all function based on the same concept of combustion within a chamber.
4. What are the advantages of internal combustion engines?
Ans. Internal combustion engines offer several advantages, such as high power-to-weight ratio, high energy efficiency, and the ability to quickly start and stop. They also provide a wide range of power outputs and can be used in various applications, including transportation and power generation.
5. What are the environmental concerns associated with internal combustion engines?
Ans. Internal combustion engines produce emissions, such as carbon dioxide (CO2), nitrogen oxides (NOx), and particulate matter, which contribute to air pollution and global warming. They are also dependent on fossil fuels, which are non-renewable resources. Efforts are being made to develop cleaner and more sustainable alternatives to internal combustion engines, such as electric vehicles and hydrogen fuel cells.
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Document Description: GATE Past Year Questions: Internal Combustion Engine for Mechanical Engineering 2024 is part of Thermodynamics preparation. The notes and questions for GATE Past Year Questions: Internal Combustion Engine have been prepared according to the Mechanical Engineering exam syllabus. Information about GATE Past Year Questions: Internal Combustion Engine covers topics like and GATE Past Year Questions: Internal Combustion Engine Example, for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for GATE Past Year Questions: Internal Combustion Engine.
Introduction of GATE Past Year Questions: Internal Combustion Engine in English is available as part of our Thermodynamics for Mechanical Engineering & GATE Past Year Questions: Internal Combustion Engine in Hindi for Thermodynamics course. Download more important topics related with notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free. Mechanical Engineering: GATE Past Year Questions: Internal Combustion Engine | Thermodynamics - Mechanical Engineering
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