Practice final Flashcards
In areas where there is not enough vertical space to use a screwdriver with a straight shank, an offset screwdriver can be used.
True
Teflon V-ring packing does not require a valve seal lubricant.
True
Most files are made from carbon steel, which is heat-treated after stamping.
True
Tang - that part of a file to which the handle is attached.
True
When filing a speed of 30 to 40 cutting strokes per minute is recommended.
True
A filing method that produces a smooth finish with a high degree of flatness is called draw filing.
True
Wrenches for an Allen head set screw are hexagonal.
true
When using a chisel the cutting force should always be directed toward the moveable jaw of the vise.
False
When striking a chisel, watch the chisel head and not the cutting edge.
True
Copper expands 1.4 times more than steel, when heated.
True
Copper is an extremely poor conductor of heat.
False
Copper tubing is specified by its OD (outside diameter.)
True
Material that is to be soldered should be cleaned first to remove oxide deposits.
True
The ratchet stop, which is provided on most micrometers, is there to stop damage to the micrometer.
True
NC Bolts and NF Bolts can be the same diameter.
True
When control air pressure is applied to the diaphragm of a flow control valve, the pressure at which the valve stem begins to move can be changed by varying the tension on the spring.
True
In an emergency a micrometer may be used as a clamp.
False
Valve stem packing: Teflon requires an extremely smooth valve stem finish.
True
Of the common packing materials Teflon V-ring packing presents the least friction.
True
Top quality tools are made of alloy steel and are carefully heat treated.
True
Fine cut files are best for soft metals.
FALSE
Coarse cut files are best for steels.
False
Dies are used to cut NC (National Coarse) threads only.
False
Taper, plug, bottoming and pipe all refer to thread dies.
False
Taps and dies are very brittle.
True
A hacksaw, with an 18 tooth blade, would be used to cut thin metal.
False
Slip joint pliers are used to turn nuts, bolts or tubing fittings.
False
Open-end wrench grasps the nut only on two (2) flats.
True
Carbon steel twist drills lose their temper if severely overheated.
true
When using a gasket cutter to cut a circular gasket, the inside cut is made first?
False
Schedule 80 pipe has a smaller ID than schedule 40 pipe.
True
Schedule 80 pipe has a larger OD than schedule 40 pipe.
False
You can still continue to work when your permit has expired as long as it’s the same day.
False
Flux residue can cause corrosion problems?
True
Galvanic corrosion occurs when two dissimilar materials are coupled in a corrosive electrolyte.
True
When you tighten a joint, the number of turns by hand should be more than the number of turns using a wrench.
True
Pressure instrument installations work the best in Tees, Elbows, and Bends facing the flow.
False
Packing has to be replaced periodically because: A) it deteriorates B) it has been compressed and dried C) it may no longer provide a tight seal D) all the above
D) all the above
Valve packing: A) is used only in hazardous process B) is always a rope type C) cannot be made of Teflon D) reduces leakage around the valve stem
D) reduces leakage around the valve stem
The part of the file that actually does the cutting is called:
Face
The name of the file cuts from most coarse to finer are:
Rough, coarse, bastard
What are the three purposes of WHMIS?
Labels
MSDS Sheets
Worker Education
When taping a hole (blind) that does not go through the metal, the proper steps to tap it are?
Tapered, plug, bottom
Capillary action is designed to do what when soldering?
Draw the solder into the joints
What type of solder is used in electronic soldering?
Rosin
What power of soldering iron is used for electronic soldering?
20-50 Watts
Halon is:
A fire extuisher type
Why does the Nozzle on a C02 fire extinguisher get cold after use?
A gas cools upon expansion. This is known as the Joules Thomson effect.
What is the cutting speed?
the speed at the margin of the drill bit
What is the spindle speed?
the speed you set the drill press
What is the feed rate of a drill?
the rate the drill is fed into the work
What is the biggest gap a work rest on a grinder should ever have?
3mm?? says 1.5mm in another quiz
When doing a U Bend in long tubing lines to allow for expansion and contraction on horizontal lines
The U should face upward for gas service and downward for liquid service
A Robertson screwdriver has colored handles indicating size. List the four colors ranging from smallest to’ largest
Black
red
Green
yellow
Is tubing sizes OD or ID”
OD
If you don’t have a proper tubing cutter, and you are “forced” to cut tubing with a hacksaw, and you had all 4 blades described below, which would be your best choice?
32
What is tinning?
Adding solder to the tip of a piece of wire or the soldering tip
In a workplace accident, who other than the injured person, is impacted?
A) The injured workers family
B) Other workers at the work site
Who is responsible for workplace safety
A) The employer
B) The company safety representative
C) You
What is the BEST way to mitigate hazards on a job site
Engineering Controls
