What is negative feedback?

What is negative feedback?  Basically in this type, the feedback signal is subtracted from the input signal in the controller. And this is the most widely used type, because of its accuracy and control in the process. Also negative feedback, which tries to reduce error by bringing input and output closer together

What is positive feedback?

What is positive feedback?  Basically in this type, a feedback signal is added with the input signal in the controller. And it has less control over error.

What is feedback control system?

What is feedback control system? Basically a feedback control system consists of five components - input (set value), output (process variable), controlling process, sensing devices and actuating / control devices.

What is a ruptured disc?

What is a ruptured disc? Basically the rupture disc is a device used to prevent the vessel from breaking due to increased pressure. It consists of a thin metal diaphragm that explodes when the vessel's pressure rises. Rupture discs are usually designed to reduce to 1.5 times the vessel's maximum allowable working pressure. A disc assembly consists of a thin, circular membrane usually made of metal, plastic, or graphite that is firmly clamped into a disc holder. It works on the pressure relief principle. Rupture discs are actuated by inlet static pressure and are designed to function by bursting a pressure-loaded disc. The disc may be made of metal or carbon graphite and placed in a suitable holder..

What is Current Transformer?

What is Current Transformer? Basically a current transformer is a device which is directly surrounded by phase wire in three-phase system, to measure the current flowing through it. As the name suggests, this is a type of transformer. A current transformer comes under the working similarity of a step-down transformer. A current transformer (CT) converts a high voltage current flowing through its primary winding (phase wire) into a low voltage current flowing through its secondary winding (internal ammeter). The meter will then automatically scale or calibrate internally to reflect the original value.

What is Bus-Coupler?

What is Bus-Coupler? A bus-coupler is basically a component that connects several bus bars together. And it has two uses. The bus coupler can be used to supply from the first bus bar by default. If it fails, it will disconnect from the first one and take supply from the second one. Here, the load will remain disconnected for a while. In this case, two bus bars will be isolated from each other by a bus coupler. And the bus coupler will connect both bus bars simultaneously. In case of failure of the first bus bar, the load is connected through the second bus bar. It will not stop the current even for a second. Thus, in any case, you can see that a bus coupler is used to combine multiple bus bars. So, the concept of bus coupler is simple. It can either be used to connect multiple bus bars at once or to connect them only one at a time; It depends on the current usage and how long the load can withstand the power outage.

What is a bus bar?

What is a bus bar? Basically a bus bar can be known as a group of conductor plates (three phases of R, Y, and B) which receives the main incoming power and distributes it to various outgoing requirements. The main incoming three-phase supply is fed to three plates of conductors. From these plates, various other smaller plates are distributed to panels or feeders which require three phase supply. It happens that you get a uniform connection and avoid a large connection to the main generator. You have only one incoming supply and can have multiple outgoing connections to the various feeders you need the supply.

What is relative humidity?

What is relative humidity?  Relative basically means relating to something. It is the amount of water vapor in the atmosphere and how much water vapor the air can hold at that particular temperature. And this is the percentage of moisture in the air. But this relationship can be observed only in a certain range of temperature.

What is absolute humidity?

What is absolute humidity?  Basically absolute means real value. And it is the amount of water present in a given mass of air at a given temperature. Absolute humidity (AH) is obtained from the following simple formula.  AH = water vapor/air ratio.

What is hydrostatic pressure ?

What is hydrostatic pressure ? Essentially, hydrostatic pressure is the pressure due to the depth of the fluid, while absolute pressure is the hydrostatic pressure combined with the atmospheric pressure. Thus, hydrostatic pressure is not atmospheric pressure but absolute pressure.

What is a proportional valve?

What is a proportional valve? Basically defines a valve with a spool in a proportional body design. And it is a continuously variable, electrically modulated, directional control valve with more than 3% center overlap. The function of a proportional valve is to produce a smooth and continuous variation in flow or pressure proportional to the electrical input signal. Connecting the electronics to these valves must be done accurately. These valves allow infinite spool positions and result in infinitely adjustable flow volumes. Infinite spool positioning can be achieved using stroke-controlled actuators that use pneumatic cylinders with proportional valves and solenoids to control the direction and speed of motion. In the hydraulic industry, the term proportional valve refers to a specific type of valve that is very specific to a servo valve. Variable positioning of the valve allows spool design with metering notches for flow control, speed control as well as directional control in one va

What is a Servo Valve?

What is a Servo Valve? A servo valve essentially defines a valve design with a bushing spool assembly that has high-precision metering edges. And basically, the name servo valve is related to the word servomechanism, which means that the valve is constantly monitored to control its movement. The name proportional describes any action where only one parameter varies somewhat in relation to the other. It is a continuously variable, electrically modulated, directional control valve with less than 3% center overlap. Servo valves are used in conjunction with closed-loop systems and advanced electronics. Servo valves operate with greater accuracy, very high repeatability, minimal hysteresis and high-frequency response. But servo valves are more expensive. A servo valve or pressure control valve is generally used to control the pressure in a circuit through a directional valve in some cases. A load cell or pressure transducer detects the force or torque. A servo amplifier analyzes the feedbac

What is a rotary pump?

What is a rotary pump?  Essentially a circulating pump will continuously transfer hot water in the loop while it is running. It simply takes water and discharges it at high pressure to the required points, and returns it to the line system for proper circulation. A pump has inlet and outlet openings. Both of these are in the same line with each other.  

What are the types of submersible pumps?

What are the types of submersible pumps?  Types of submersible pumps is Deep well pump  Bottom suction pump  Stainless steel pump  Oil filled pump  Submersible utility pumps  Water cooler pump  Mixed and axial flow pumps

What is electric field?

What is electric field?  Basically in an atom protons are positively charged and electrons are negatively charged. And each conducting atom has an electric field around it. This is due to the presence of these two factors. It is positively charged while negative charge is withdrawn. So, it can also be defined as the force around an electrically charged particle.