Properties of Fluid: Pressure and Temperature! 1. Pressure: The pressure is a force applied per unit area and is measured in units N/m2 or pascal. The absolute pressure of a gas is the result of a large number of the molecules forming the gas striking the walls of the vessel. The force per unit area is called the specific pressure [...]
Compilation of exam questions on IC engine for thermal engineering students. Exam Question # 1. Differentiate between two stroke cycle and four stroke cycle engines. Ans. Certain engines work on four stroke cycle principles while others work on two stroke cycle principle. Each cycle has its own advantages. (1) In two stroke cycle engine, every revolution has an active stroke; [...]
Compilation of exam questions on thermal engineering for engineering students. Exam Question # 1. What is the difference between enthalpy and entropy? Ans. Enthalpy: A working substance in any state has a certain amount of internal energy. Besides, it also has some potential energy which is proportional to the absolute pressure and the specific volume i.e., to the product PV. [...]
Compilation of interview questions on thermal engineering for students. Interview Question # 1. Define engineering thermodynamics. Ans. It is the science which analyses the problems related to the conversion of heat to work and vice-versa and changes in properties of the working fluids involved in such a conversion. The thermodynamic study deals with a concept of ideal processes and most [...]
Compilation of questions on thermal engineering for college students. Q. 1. State the first and second law of thermodynamics. Ans. First Law of Thermodynamics: (a) For a closed system which has passed through a cycle, the first law of thermodynamics states: When a closed system has passed through a cycle, the sum of the heat energy taken in across the [...]
Classification of Boiler Draught: Natural, Artificial, Steam Jet and Mechanical. Draught may be defined as the small pressure difference which causes a flow of gas to take place. In case of a boiler the function of the draught is to force air to the fire and through a boiler furnace and flue, and to discharge the products of combustion to [...]
The following article will guide you about how to calculate the calorific value of fuels. Learn about:- 1. Meaning of Calorific Value of Fuels 2. Theoretical Determination of Calorific Value of Fuel 3. Experimental Determination of Calorific Value of a Fuel 4. Determination of Calorific Value of Fuels Using Bomb Calorimeter 5. Calorific Value of Liquid Fuel 6. Calorific Value [...]
In this article we will discuss about the classification or type of fuels: 1. Solid Fuels 2. Liquid Fuels and 3. Gaseous Fuels. The fuel is a material which when once raised to its ignition temperature continues to burn if sufficient oxygen or air is available. The principle constituents of any fuel are carbon and hydrogen. Fuels may be solid, [...]
In this article we will discuss about the working of four stroke and two stroke IC engines. Four Stroke Cycle Engine: Principle: In IC Engines the following events take place in the cyclic order: (1) The quantity of air or mixture of air and fuel must be admitted in the engine cylinder. It is generally known as the charge. (2) [...]
In this article we will discuss about the IC engine:- 1. Notes on Internal Combustion Engine 2. Basic Operation of IC Engine 3. Classification 4. Construction 5. Supercharging 6. Firing Order 7. Methods of Starting IC Engines 8. Governing. Contents: Notes on Internal Combustion Engine Basic Operation of IC Engine Classification of IC Engines Construction of IC Engines Supercharging of [...]