TPC Troubleshooting skills
The diagram that shows both the external shape and the internal working parts of a system or a component is a(n)
Cutaway diagram
Parts lists do NOT
Include a great deal of written technical information
Which sense is not used to tell if a machine is operating normally?
Tasting
Wear to machine parts caused by contact with chemically active materials is an example
Corrosion
Which of the following represents the best way of presenting a message to get a person's cooperation?
"If it is done this way, you will be more productive."
The sag in a drive chain should be about 1/4 in. for every __________ in. of distance between the sprocket centers.
12
How long does it generally take to get a PM system up and running smoothly?
About a year
When should you remove your lock from the machine controls?
After you have replaced the machine guards and covers
The basic unit for measuring electric current is the
Ampere
When giving instructions, what is the best way to make sure your message was understood?
Ask the listener questions about what you said
Drive chains that run at speeds of over 500 feet per minute require
Constant lubrication
Before you can diagnose problems, you must
Be able to recognize normal operations
Which of the following is a nonverbal communication method?
Body language
What is the major cause of problems in a hydraulic system?
Dirt
A panelboard is a small assembly that contains
Either fuses or circuit breakers
In a large plant, the building-maintenance group is most likely to be made up of
Electricians, mechanics, plumbers, carpenters, and painters
Electrical switchgear consists of
Equipment that controls, protects, and regulates machinery
Which component(s) in an HVAC system typically need the most attention?
Filters
When you give a person a chance to express himself, you may
Find him easier to work with
Synthetic coatings greatly improve the strength and resistance of a
Floor
All communication is essentially a cycle of __________ step(s
Four
Modern precision-built bearings
Help support power-transmission shafts
Writing down an order
Helps prevent misunderstandings
What is the most important part of a planned maintenance program?
Inspection
A piping system is shown in three dimensions in a(n)
Isometric diagram
In a normal work-order procedure, which of the following jobs is done by the scheduler?
Issues the work order
The work order form is used for
Issuing instructions and obtaining feedback
The purpose of good maintenance is to
Keep machines and equipment working
Which of the following is used to trace the wiring in the ceilings and walls of a building?
Lighting diagram
How does a continuity tester show that a circuit is complete?
Lights a lamp
Where should you look when you need to find out if a machine has been modified?
Machine history record
What is the most useful part of a service manual for a troubleshooter
Maintenance and adjustment section
NOT all centrifugal compressors have
More than one air supply
Which of the following instruments measures potential differences
Multimeter
The tools in your toolbox do NOT need to be
New
A wiring diagram shows the
Physical relationships of devices in an electrical system
The inspection and repair of plant equipment at regular intervals is called
Planned maintenance
A Bourdon tube is used to measure
Pressure
Your first duty in an emergency is to
Protect workers from injury
Which of the following uses infrared radiation to detect hot spots in equipment
Pyrometer
If you have a problem or complaint about your job, you should
Report it directly to your supervisor
An ohmmeter measures
Resistance
To recheck a system after making a repair, you should
Run the system under both automatic and manual control
Which of the following machine parts require daily lubrication?
Shafts and bearings
The best approach for identifying the cause of a breakdown in automatic machinery is
The systematic one
Why might a manufacturer leave disassembly instructions out of their service manual?
The warranty is voided if an unauthorized person performs disassembly
Which of the following instruments measures the difference between two temperatures
Thermocouple
All of the following will cause a drive belt to deteriorate EXCEPT
Too much ventilation
Side-to-side movement of a shaft in a sleeve bearing should be no more than
Two thousandths of an inch
Which of the following conditions indicates conveyer overload?
Uneven spaces between the top plates of the conveyer chain
The machine operator frequently can give the troubleshooter
Valuable information
The decision to run a machine part to the point of breakdown must be made
Very carefully
Potential difference is measured with a(n
Voltmeter
When should an emergency team make temporary repairs on a key machine that is down?
When replacement parts will not be available for weeks
To keep fragile tools from being damaged, they should be stored in
a drawer-type chest
Wear caused by the improper use of a machine would be classed as___________ wear
abnormal
A maintenance specialist reports to craft supervisors in all plant departments in a plant organized under
central organization
Numbers near the arrows found on lighting diagrams indicate the
circuit number
On an electrical schematic, subassemblies are designated by a __________-line outline
dashed
The gauge number of a wire is based on its
diameter
The output of a substation depends on an industrial plant's
distance from substation
The best way to communicate a message to others is to
eliminate distractions
A troubleshooter uses a mechanics stethoscope to detect
faulty gears
One of the first signs of bearing failure is
high bearing temperature
The primary job of a maintenance troubleshooter is to __________ problems.
identify and correct
A piping schematic usually shows the size of each pipe by indicating the
inside diameter
The millwright is used as a(n) __________ in many maintenance organizations
jack-of-all-trades
Notes about a machine failure and the steps taken to correct it should be written on the
maintenance record card
When performing a test run on a machine, you should
make notes for the work order
At the time a new machine is installed, the maintenance worker should learn as much as possible from the
manufacturer's rep
When you measure the timing of operations on a lathe, you are performing a(n) __________ test.
mechanical
High values of resistance can be measured with a(n)
megohmmeter
Where should you make the first check when a fault occurs at the end of a series of actions?
midway
Binding in a pneumatic actuator is typically caused by
misalignment
The motion of a machine's parts when operating causes __________ wear
normal
Which type of diagram shows the parts of a circuit as they actually appear to the eye?
pictorial
When troubleshooting a machine, your first step should be to
read the equipment record
When making a test run run on a machine you should
remove the guards
For record-keeping purposes, all equipment should be classified according to
required inspection interval
Informal training that can prepare you for repairing a piece of equipment could include
studying the blueprints
Schematics are line diagrams that use __________ to show how a system works
symbols
Step-by-step instructions for testing equipment are included in a(n)
troubleshooting chart
When you measure the timing of operations on a lathe, you are performing a(n) __________ test.
visual