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Thermodynamics
The branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy), and, by extension, the relationships between all forms of energy. Thermodynamics is a branch of physics that deals with heat, work, and temperature, and their relation to energy, radiation, and properties of matter. The behavior of these quantities is governed by the four laws of thermodynamics which convey a quantitative description using measurable macroscopic physical quantities, but may be explained in terms of microscopic constituents by statistical mechanics. Thermodynamics applies to a wide variety of topics in science and engineerin...
General Questions of Machine Design
Machine design is the single most important activity in the mechanical industries. Success or failure of a company has it roots in product design, whether it is done in-house or contracted out. It is here that manufacturing costs and profits are determined.
Heating Ventilation Air Conditioning and Refrigeration
It has its expertise in designing HVAC systems for residential buildings, offices, medical facilities. During our posting in HVAC systems, we have learned a lot about the HVAC system, from the main reason for employing HVAC to goals HVAC should be accomplished, we have learned about components found in every HVAC system along with types of air conditioning systems for better understanding of working of each component. Not just the study of systems but also the study of their governing refrigeration cycle gave us an insight into the purpose of each component. Special attention was given to the study of pumps because it has its application not only in HVAC but also in Waste Water Treatment, Fuel transportation, Industrial purposes. Therefore, we have studied all pump types and areas of their application.
General Questions of Theory of Machines
"The subject Theory of Machines may be defined as that branch of Engineering-science, which deals with the study of relative motion between the various parts of a machine, and forces which act on them. The knowledge of this subject is very essential for an engineer in designing the various parts of a machine."
Concepts of HVAC
Inside an air conditioning system is a chemical refrigerant which is a chemical compound that easily changes states from liquid to vapor and back again. A common trade name for refrigerant which you may be familiar with is Freon.In addition to refrigerant, an air conditioning system requires a minimum of four components, the compressor, condenser, metering device, and evaporator.1) The CompressorThe compressor is the heart of the system. Just like your heart pumps blood through your body at a specific flow rate and pressure, the compressor pumps the refrigerant through the air conditioning system at a designed flow rate and pressure.When the refrigerant enters the compressor it is in a vapor...
General Questions of I.C. Engines
An internal combustion engine (ICE) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit. In an internal combustion engine, the expansion of the high-temperature and high-pressure gases produced by combustion applies direct force to some component of the engine. The force is applied typically to pistons, turbine blades, a rotor, or a nozzle. This force moves the component over a distance, transforming chemical energy into useful work. This replaced the external combustion engine for applications where weight or size of the engine is important.
General Questions of Thermodynamics
Thermodynamics is the branch of physics that deals with the relationships between heat and other forms of energy. In particular, it describes how thermal energy is converted to and from other forms of energy and how it affects matter.
General Questions of Strength of Materials
Strength of materials, also called mechanics of materials, deals with the behavior of solid objects subject to stresses and strains. The theory began with the consideration of the behavior of one and two dimensional members of structures, whose states of stress can be approximated as two dimensional, and was then generalized to three dimensions to develop a more complete theory of the elastic and plastic behavior of materials.
General Questions of Fluid Mechanics & Machines
Latest Fluid Mechanics objective questions(MCQs) & answers for competitive exams & interviews. Useful for freshers, students preparing for semester exams. Fluid mechanics is the branch of physics concerned with the mechanics of fluids and the forces on them. It has applications in a wide range of disciplines, including mechanical, civil, chemical and biomedical engineering, geophysics, oceanography, meteorology, astrophysics, and biology.
