The ratio of true power to apparent power in an alternating current or a ratio of resistance to impedance. A solderless friction type termination used in industrial controls to facilitate easy field wiring of electrical control systems. An electronic device which allows current to flow in only one direction. The time a controller takes to return to its initial parameters when input power is removed . The opposition to electric current flow.
All conductors offer some resistance and the basic unit of resistance is the ohm.
The degree of accuracy to which a controller can be set to or the degree of accuracy of an output function as in a digital readout of a specific output. A potentiometer can be connected as a rheostat by connecting the wiper to either one of its other terminals. RMS Root Mean Square, Effective DC valueof sinewave voltage or current. The effective value is ,707 times the peak voltage or peak current measured. Series Circuit Loads connected end to end across a voltage source.