Q: Is a switch an electrical component that can "break" or "make" an electrical circuit? ¶
A: Yes, and interrupting the current or diverting it from one conductor to another.
Q: Is a switch flicked? ¶
A: Yes, and the resistance must pass through a state where a quarter of the load's rated power is briefly dropped in the switch.
Q: Are switches available in many different styles and sizes? ¶
A: Yes, and are used in numerous applications.
Q: Is a switch internally wired specifically for polarity reversal? ¶
Q: Were switches used as channel selectors on television receivers until the early 1970s? ¶
A: Yes, as range selectors on electrical metering equipment, as band selectors on multi-band radios and other similar purposes.
Q: Are switches classified according to the arrangement of their contacts? ¶
Q: Is a switch in the on state, its resistance is near zero and very little power is dropped in the contacts? ¶
A: Yes, when a switch is in the off state, its resistance is extremely high and even less power is dropped in the contacts.
Q: Is a switch used only where people cannot accidentally come in contact with the switch or where the voltage is so low as to not present a hazard? ¶
Q: Is a switch layered to allow the use of multiple poles? ¶
A: Yes, and each layer is equivalent to one pole.
Q: Are switches used for isolation of circuits in industrial power distribution? ¶
Q: Is a switch closed? ¶
A: Yes, and current flows through the hinged pivot and blade and through the fixed contact.
Q: Are switches used in circuits up to the highest voltages? ¶
Q: Is a switch a type of biased switch? ¶
Q: Are switches usually not enclosed? ¶
Q: Is a switch nonconducting? ¶
Q: Is a switch the slow opening speed and the proximity of the operator to exposed live parts? ¶
Q: Is a switch a rugged switch which is operated by foot pressure? ¶
Q: Are switches used to isolate electric power from a system? ¶
A: Yes, and providing a visible point of isolation that can be padlocked if necessary to prevent accidental operation of a machine during maintenance, or to prevent electric shock.
Q: Is a switch opened? ¶
A: Yes, and forming a gas plasma, also known as an electric arc.
Q: Is a switch to switch lights or other electrical equipment on or off? ¶
Q: Is a switch often used in circuit analysis as it greatly simplifies the system of equations to be solved? ¶
A: Yes, but this can lead to a less accurate solution.
Q: Is a switch designed to switch significant power? ¶
A: Yes, and the transitional state of the switch as well as the ability to withstand continuous operating currents must be considered.
Q: Is a switch closed and the contacts approach? ¶
Q: Are switches used for control of measuring instruments? ¶
A: Yes, and switchgear, or in control circuits.
Q: Is a switch a button used to release a door held closed by an electromagnet? ¶
Q: Are switches operated automatically by changes in some environmental condition or by motion of machinery? ¶
Q: Is a switch a manually operated electromechanical device with one or more sets of electrical contacts? ¶
A: Yes, and which are connected to external circuits.
Q: Is a switch a class of electrical switches that are manually actuated by a mechanical lever? ¶
A: Yes, and handle, or rocking mechanism.
Q: Are switches installed at convenient locations to control lighting and occasionally other circuits? ¶
Q: Are switches made in many sizes from miniature switches to large devices used to carry thousands of amperes? ¶
Q: Is a switch used? ¶
A: Yes, for example, in machine tools to interlock operation with the proper position of tools.
Q: Are switches used to prevent unauthorized use? ¶