TPC SCHEMATIC AND SYMBOLS

Wires labeled " L " on a schematic? carry power from the source One disadvantage of a welded joint is that it may form slag inside the pipe Which displayed symbol represents a flanged joint? Which type of projection gives a three-dimensional view of a piping system? Isometric The symbol shown below represents a _________ joint -----)------- bell-and-spigot Double-line drawings that show the internal details of a pneumatic system are called Cutaway drawings In a piping system, an alternate flow pattern is indicated by a Supplementary diagram A single-line drawing that uses simple outlines to represent components is a __________ diagram. pictorial What does the 2 represent when pipe and fitting sizes are indicated as follows? 3" x 4" x2" Size of branch line The symbol shown below represents a __________ valve Which kind of valve can be used to regulate the flow of fluid? Globe In the symbol displayed, the 2-in. dimension is indicated by the letter C Vent lines and drain lines are shown on a hydraulic schematic by Dashed lines The symbol displayed represents a Gauge The downward pointing arrow in the symbol shown below represents a relief valve that is normally closed Which type of diagram emphasizes connections between elements rather than flow? Wiring A wiring diagram shows how the parts of a circuit are connected Externally An electric circuit in which the current path goes from one load to the next is called a _________ circuit. Series If the part is to be welded in the field, the weld symbol includes a(n) Flag "Fusion" welding means joining two materials by __________ them together Melting How is chamfering indicated in a welding symbol? The symbol has the shape of the chamfer A thermistor's electrical resistance decreases as the temperature increases On a refrigeration schematic, the following symbol indicates a switch that opens on rising pressure The refrigeration accessory symbol shown below represents a(n) line filter In an A/C and R system, thermostatic expansion valves and ADR valves are used on _________ control. Direct If the fluid in a hydraulic or pneumatic system is used again and again it is called a(n) _________ system. Closed The symbol shown below represents a fixed-displacement compressor A schematic diagram may be broken into local areas to make circuits easier to understand On a hydraulic or pneumatic diagram, local areas are outlined by which of the following? --- - - --- - - ---- A composite symbol is created by combining __________ symbols into a single symbol basic