Education 28.6 Metering pumps adminFeb 3, 2020 A very common method for directly controlling low flow rates of fluids is to use a device known as a metering...
Education 28.5 Use of line reactors adminFeb 3, 2020 Regulating the electric power sent to an electric motor is a task performed by high-speed switching transistors inside...
Education 28.4 Motor drive features adminFeb 3, 2020 Modern DC and AC motor drives provide features useful when using electric motors as final control elements. Some...
Education 28.3 AC motor braking adminFeb 3, 2020 There are several different methods useful for causing an AC induction motor to brake, or slow down: DC...
Education 28.2 AC motor speed control adminFeb 3, 2020 AC induction motors are based on the principle of a rotating magnetic field produced by a set of stationary...
Education 28.1 DC motor speed control adminFeb 3, 2020 DC electric motors generate torque by a reaction between two magnetic fields: one field established by stationary...
Education Chapter 28 Variable-speed Motor Controls and Drives adminFeb 3, 2020 An alternative to control valves for adjusting fluid flow is to regulate the speed of the machine(s) motivating fluid...