A substances that flows is called as fluid. All liquid and gaseous substances are considered to be fluids. Water, oil, and others are very important in our day-to-day life as they are used for various applications. For instance water is used for generation of electricity in hydroelectric power plants and thermal power plants, water is also used as the coolant in nuclear power plants, oil is used for the lubrication of automobiles etc. Fluid Mechanics is the branch of science that studies the behaviour of fluids when they are in state of motion or rest. Whether the fluid is at rest or motion, it is subjected to different forces and different climatic conditions and it behaves in these conditions as per its physical properties. Fluid mechanics deals with three aspects of the fluid: static, kinematics, and dynamics aspects. This test is a subset of mechanical engineering. We have several other tests under "Mechanical Engineering" and they are: "Compressors", "Compressors, Gas Turbines and Jet Propulsion", "Thermodynamics", "Engineering Mechanics", "Gas Turbines" and "Properties of Fluids".
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