Quizes Flashcards
Which describes the thread of a bolt extractor?
Spiral anti-clockwise
For which tool used in the shop, and covered under power tools in this course, must a full face shield be worn?
Grinder
Which heating equipment keeps the temperature the lowest while joining materials?
electronic soldering iron
Which safety rule does not apply when working with a drill press?
Always use oil
What does the number 22 mean on the jaws of a wire stripper?
The gauge of the wire to be stripped
When a mushroom head forms on a cold chisel, why must you grind it off?
It prevents small pieces of the struck end from flying through the air
What are the correct number of contact points between the jaws of a pipe wrench and a pipe?
2
What is the correct gap between the grinding wheel and the tool rest?
1.5 mm
Which screw driver would you select if the screw you want turn has a square depression in the head?
Robertson
A metal file should never be used without which part?
Handle
Ball Peen and Soft Metal are types of:
Hammers
A length of tube needs to be reamed. Which tool was used just prior to this?
Roll cutter
When filing, what is the most likely the cause of scratches on the work piece?
Clogged teeth
ASME B16.5 covers flange fittings made of cast or forged materials?
True
Flanges with a rating class of 300 are covered by ASME B16.5?
True
ASME B16.5 includes recommendations regarding flange bolting?
True
ASME B16.5 relates to instrumentation technicians because the instruments may have flanged fittings which allow them to fit into process piping and it is essential that the entire piping system remains safe?
True
A turbine meter installed with a threaded connection is easier to replace than a meter with a flanged connection in a piping system?
False
What type of flange has holes drilled in the flange rims?
Lap Joint
What type of flange is used where welding is not practical?
Screwed
What type of flange is easy to tell if the process has been blanked off?
Spectacle
What type of flange is a solid plate?
Blind
What type of flange is the pipe inserted until it shoulders out for welding?
Weld Neck
What type of flange does not touch the process?
Lap Joint
What type of flange allows for easy positioning for welding?
Socket Weld
What type of gasket design has v grooves machined into the face?
Serrated
_____ has a liberal tolerance for wall thickness.
Pipe
_____ has a tighter tolerance for wall thickness.
Tube
The outside diameter of _____ is the actual OD
Tube
Tubing provides a simplified free flow system?
True
Tubing has more potential leak points than piping?
False
Tubing requires fewer fittings and is easier to install than piping?
True
Drain Waste Vent is used for high pressure applications?
False
Cooper tube Type M is printed in?
Red
Cooper tube Type L is printed in?
Blue
Cooper tube Type K is printed in?
Green
A maintenance worker is replacing some copper pipe. They notice green lettering on the old pipe. What is the wall thickness of the pipe they should be using?
0.049”
A maintenance worker is replacing some copper pipe. They need to buy some new fittings. They grab a tape measure and it looks like the OD is just less than an inch. What size of fittings should they order?
0.750”
Annealing makes the copper tube difficult to bend?
False
The tubing being used in the SAIT shop is likely following which standard?
ASTM A269
Plastic tubing is great for high temperature and pressure applications because it has such a low cost?
false
Plastic tubing fails to meet the material specifications for use in instrument air lines.
False
If you a bend 0.25” tube 90 degrees what is the approximate amount of gain you can expect?
0.25”
Find the time it takes for a molecule to travel the length of a 20 m tube when the liquid flow rate is 800 cm3 / min. The tubing has an OD of 12.7 mm and a wall thickness of 1.25 mm
2.0 min
The actuator provides the power to position the valve plug correctly within the body to control the flow of energy as required by the process conditions?
True
Fail Open Describes a condition where the valve plug moves to the
open position
Fail closed Describes a condition where the valve plug moves to the
closed position
If an actuator is Direct-acting and the valve is Direct-acting what is the final result?
Air-to-Open
Fail open
If an actuator is Reverse-acting and the valve is Direct-acting what is the final result?
Air-to-Open
Fail Closed
If an actuator is Direct-acting and the valve is Reverse-acting what is the final result?
Air-to-Open
Fail Closed
A direct acting valve with a direct acting actuator fails open.
True
Using a positioner increases the response time of a valve?
True
A positioner can be used to change the action of your valve without changing your actuator or valve trim?
True
