Progressive Die These progressive die are designed to perform two or more operations at different stages every time when the ram descends. The stock strip is advanced through a series of stations that perform one or more distinct die operations on the workpiece. The strip must move from the first through each succeeding station to
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Tap Changing Transformer All power Tap changing transformer on transmission lines are provided with taps for control of secondary voltage. The tap changing transformers do not control voltage by regulating the flow of reactive VARs but by changing transformation ratio. There are two types of tap changing transformers. (a) Off-load tap changing transformers. (b) On-load
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A cam and follower is a rotating or oscillating machine clement having a curved outline Or a curved groove. It gives a predetermined specified motion to another element called the follower which is in contact. A general example is the camshaft of an automobile which takes the rotary motion of the engine and translates it
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Series Capacitor It is connected in series capacitor to compensate the inductive reactance of line. This reduces the transfer reactance between the buses to which the line is connected. It increases maximum power that can be transmitted and reduces reactive power loss. The reactive power produced by the series capacitor increases with increase in power
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Primary function of the pressure control valves is to match the flow of fluid through the regulator to the demand for fluid placed upon the system. If the load flow decreases, then the regulator flow must decrease also. If the load flow increases, then the regulator flow must increase in order to keep the controlled
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A load cell is an electromechanical transducer that converts load acting on it into an analog electrical signal. Strain Gauge Load cell provide accurate measurement of compressive and tensile loads. Load cells commonly function by utilizing an internal strain gauge that measure deflection. Because the modulus of elasticity of a load cell is constant the
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Intro – Computer Control of Power System Operation in plants with automated computer control of power system work mainly in a central control room. In olden plants, the controls for the equipment are not centralized and the switchboard operators control the flow of electricity from a central point, whereas, auxiliary equipment operation work throughout the
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Functions of SCADA (Supervisory Control and Data Acquisition) The supervisory control and data acquisition systems allow a few operators to monitor the generator. The following are the functions of SCADA. 1. Data Acquisition : It provides telemetered measurements and status information to operator. 2. Information display (limit violations, unplanned events). 3. Supervisory control (CBs (Circuit
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Laser Beam Welding Characteristics The laser beam welding characteristics of the laser and electron beam are similar. The concentration of energy by both beams is similar with the laser having a power density in the order of 10°W/cm². The power density of the electron beam is only slightly greater. It is compared to a current
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Friction Stir Welding (FSW) Friction Stir Welding (FSW) is a solid state welding process in which a rotating tool is fed along the joint line between two workpieces. It is used to join two facing surfaces. During welding, heat is generated due to friction and the metal is mechanically stirring to from the weld seam.
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