Examlex
__________ is a child's application of abstract thinking during the preoperational period.
Control Circuits
Electrical circuits designed to control the operation of other circuits or devices through the use of signals.
Differential Control
A control strategy where the difference between two signals or values is used to regulate a process or system.
On/off Switch
A device that enables users to start or stop the flow of electricity to an appliance, machine, or another electrical device with a simple action.
Pilot Devices
Control instruments that command the operation of electrical machinery indirectly, often through the use of relays or contactors.
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