Test Review Flashcards
How many types of hydraulic pipe diagrams are there and what are they?
4
Cut-away diagram
Pictorial diagram
Schematic diagram
Combination diagram
What are the two general types of piping diagrams?
Single line and double line
What is an isometric projection?
An angular view showing three dimensions
What is a legend?
A list of lines and symbols on blueprints
What are the three types of electrical circuit diagrams?
one-line diagrams
schematic diagrams
wiring diagrams
What does a one-line electrical diagram show?
An interconnection or route of power flow without regard to the actual number of wires or phases
What does an electrical schematic diagram show?
It show more detail than a one-line diagram and no attempt is made to arrange the symbols to show their actual physical relationship to the different parts of the apparatus
What does a wiring diagram show?
It is a wiring instruction
In general, which type of electrical diagram show the most detail?
Schematic
What is Ohm’s Law?
V=IxR
What makes it possible to condense great detail into drawings?
Device numbers and symbols
What state are electrical drawings shown in?
De-energized state
What is device number 43?
Manual transfer or selector device
What is device number 20?
Electrically operated valve
What is device number 42?
Running circuit breaker (motor starter)
