Definition of aspect for Students. 1  1 : the appearance of something : look The old house took on a dark and lonely aspect at night. 2  2 : a certain way in which something appears or may be thought of We considered every aspect of the question. 3  3 : a position facing a certain direction The house has a southern aspect.
Knob and tube wiring is the original wiring method used from the late 1800s until approximately 1945. It is a system that involved stringing individual conductor insulated wire across porcelain insulators called âknobs,â and through other porcelain insulators called âtubes.â.
Definition of Switch. Switch is a device used for making and breaking electric current through the circuit. A switch is a device used for operating electrical appliance. In a switch on position the current passes through the appliance and it starts functioning.In a switch off position the current will not pass through the appliance and it will not work. switch is a device used for operating electrical appliance. In a switch on position the current passes through the appliance and it starts functioning. In a switch off position the current will not pass through the appliance and it will not work.