A snake coming out of its hole in a dream represents a son. A snake leaving one's house in a dream means its destruction or demolition. Killing a snake in a dream means marriage. Tapeworms or other intestinal worms in a dream represent one's relatives and their children.
Single-phasing is a special type of open circuit fault in which only one phase of a three-phase system is disconnected, causing the remaining two phases to form a single-phase system [1]. Single-phasing may happen for a variety of reasons.
Single-Break: Mechanism that transfers one contact. Single Throw Switch: A single throw switch is a switch by means of which the circuit can be opened or closed by moving the switch blade into or out of one set of contacts only. Snap Action: The abrupt transfer of contacts from one position to another.