all Flashcards
What are the five things that define a schematic?
- Is a line drawing 2. It’s made for a technical or scientific purpose 3. It shows how a system works 4. Symbols are used instead of pictures 5. Symbols are connected to form a system by lines
What are the two kinds of piping diagrams?
single line and double line
What are the four kinds of pneumatic and hydraulic schematics?
Cut away, pictorial, schematic, and combination
What is an isometric projection?
an angular view showing 3 dimentions
What contains a list of special information on a schematic about lines and symbols?
Legend
On a single line electrical diagram equipment is in the de-energized position? T/F
T
What are the 3 types of electrical diagrams?
one-line, schematic, and wiring
Electrical symbols and numbers are used to identify what?
Devices and components
A ________ illustrates an interconnection or route of power between two places
one-line diagram
A schematic diagram is designed to show the physical locations of different parts of an apparatus? T/F
False
Which device has the number 43?
Manual transfer or selector device (43T)
Which device has the number 52?
Ac circuit breaker
Which device has the number 20?
Electrically operated valve
If you have a device with 52A, what position is the device in when a circuit is closed? What position would 52B be in?
closed:open
Draw a flanged 90 degree elbow turned toward you.
Draw a soldered or brazed gate valve.
Draw a screwed globe valve.
Draw a flanged tapered plug valve.
Draw a welded ball valve.
Draw a gas charged Accumulator.
Draw a seperator with automatic drain.
Draw a 3-phase wye grounded motor
Draw a Air Circuit Breaker with thermal trip
Draw a disconnect with inter-locked ground switch
Draw a variable resistor
Draw a push-to-close button
Draw a push-to-open button
