GATE - Mechanical Engineering exam questions and answers 2024

Computer Aided Manufacturing CAM is defined as the use of computer system to plan, manage and control the operations of a manufacturing plant through either direct or indirect computer interface with the plants production resources. Numerical Control System Numerical control is a method of controlling the movement of machine component by directly inserting coded instructions, in the form of numbers and letters, into the system. Robotics Robotics means a science which enables to design and manufacture robot. Computer Integrated Manufacturing A computer system that not only helps to design products but also controls the machinery needed to produce the finished product. Computer Aided Process Planning Computer Aided Process Planning (CAPP) is a means to automatically develop the process plan from the geometrical image of the component. Crystal structure Crystal structure describes the regularity and type of atomic arrangement within a crystal. Atomic Packing Factor Atomic Packing Factor (APF) is defined as fraction of volume applied by spherical atoms as compared to the total available volume of the structure. Law of conservation of mass Mass can neither by created nor destroyed by any physical or chemical means. Stacking faults When grain boundaries on both the sides are parallel to each other with slight disturbance of bonds in a very region, such grain boundaries are called stacking faults. Alloys When two or more pure metals are melted together to form a new metal its properties are quite different from those of the original metals, it is called an alloy. Energy Energy is the capacity to do work. Infact energy is possessed by a body, whereas work is done by a force. Mechanical Energy The energy possessed by a body due to its position or motion is called mechanical energy. Curvilinear motion If the direction of resultant of body R varies to maintain its position through center of gravity, then body is resulting in a curved path and is called curvilinear motion. Newton's law The rate of change of momentum of a body equals the force impressed upon it. Euler's law The rate of change of anular momentum of a body about an origin O equals the moment impressed upon it about the origin. Law of conservation of energy The rate of change of internal energy and kinetic energy of any mechanical system equals the sum of the rates of work done by the external forces and the energy flux across the boundary as well as the energy developed within the system.