ELECTRICAL TROUBLESHOOTING TPC 210 EXAM QUESTIONS
AND ANSWERS
On an electrical diagram, a control relay is indicated by the designation... - CORRECT ANSWER✅✅CR
The NEC requires a fuse to be installed in all ______ conductors - CORRECT ANSWER✅✅ungrounded
Cross-references to the different locations of limit switches in a diagram are provided by... - CORRECT
ANSWER✅✅arrows next to the symbols line number
A control panel layout shows the... - CORRECT ANSWER✅✅physical arrangement of all components
A sequence of operation is used with... - CORRECT ANSWER✅✅an elementary diagram
A riser diagram shows the... - CORRECT ANSWER✅✅power distribution wiring from input through
output
On a blueprint, wall outlets are indicated by a circle with... - CORRECT ANSWER✅✅a short line drawn to
it
In addition to the locations of lighting and lighting panels, lighting diagrams show the locations of... -
CORRECT ANSWER✅✅telephone outlets
A power installation drawing shows... - CORRECT ANSWER✅✅only power outlets
The actual location and routing of circuits is shown on a... - CORRECT ANSWER✅✅wiring diagram
What is most affected by overvoltage? - CORRECT ANSWER✅✅slow speed motors
The maintained start-stop device provides... - CORRECT ANSWER✅✅only undervoltage release
, What provides both overload protection and short-circuit protection in one unit? - CORRECT
ANSWER✅✅combination motor starter
If a motor stops for no apparent reason and you are called to inspect the motor starter, the first thing
you should check is the... - CORRECT ANSWER✅✅trip levers on the thermal overload relays
If an electrical machine has several problems, you should correct ______ problem(s) before trying the
machine again. - CORRECT ANSWER✅✅only one
If you close the contacts of a motor controller and measure a potential difference of zero between the
motor terminal, the fault is probably in the... - CORRECT ANSWER✅✅controller
Overvoltage, excessive current, too-frequent operation are possible causes of ______ magnet coils. -
CORRECT ANSWER✅✅burned or short-circuited
What are NOT typically connected to a control relay? - CORRECT ANSWER✅✅motors
In the electronic timing relay, the time-delay assembly is connected in... - CORRECT ANSWER✅✅series
with the relay coil
Interchanging any two supply leads of a three phase motor... - CORRECT ANSWER✅✅reverses the
direction the motor runs
Most reversing starters with low voltage remote pushbuttons are all of the following EXCEPT...
electrically interlocked
mechanically interlocked
electrically interconnected
mechanically interconnected - CORRECT ANSWER✅✅mechanically interconnected
AND ANSWERS
On an electrical diagram, a control relay is indicated by the designation... - CORRECT ANSWER✅✅CR
The NEC requires a fuse to be installed in all ______ conductors - CORRECT ANSWER✅✅ungrounded
Cross-references to the different locations of limit switches in a diagram are provided by... - CORRECT
ANSWER✅✅arrows next to the symbols line number
A control panel layout shows the... - CORRECT ANSWER✅✅physical arrangement of all components
A sequence of operation is used with... - CORRECT ANSWER✅✅an elementary diagram
A riser diagram shows the... - CORRECT ANSWER✅✅power distribution wiring from input through
output
On a blueprint, wall outlets are indicated by a circle with... - CORRECT ANSWER✅✅a short line drawn to
it
In addition to the locations of lighting and lighting panels, lighting diagrams show the locations of... -
CORRECT ANSWER✅✅telephone outlets
A power installation drawing shows... - CORRECT ANSWER✅✅only power outlets
The actual location and routing of circuits is shown on a... - CORRECT ANSWER✅✅wiring diagram
What is most affected by overvoltage? - CORRECT ANSWER✅✅slow speed motors
The maintained start-stop device provides... - CORRECT ANSWER✅✅only undervoltage release
, What provides both overload protection and short-circuit protection in one unit? - CORRECT
ANSWER✅✅combination motor starter
If a motor stops for no apparent reason and you are called to inspect the motor starter, the first thing
you should check is the... - CORRECT ANSWER✅✅trip levers on the thermal overload relays
If an electrical machine has several problems, you should correct ______ problem(s) before trying the
machine again. - CORRECT ANSWER✅✅only one
If you close the contacts of a motor controller and measure a potential difference of zero between the
motor terminal, the fault is probably in the... - CORRECT ANSWER✅✅controller
Overvoltage, excessive current, too-frequent operation are possible causes of ______ magnet coils. -
CORRECT ANSWER✅✅burned or short-circuited
What are NOT typically connected to a control relay? - CORRECT ANSWER✅✅motors
In the electronic timing relay, the time-delay assembly is connected in... - CORRECT ANSWER✅✅series
with the relay coil
Interchanging any two supply leads of a three phase motor... - CORRECT ANSWER✅✅reverses the
direction the motor runs
Most reversing starters with low voltage remote pushbuttons are all of the following EXCEPT...
electrically interlocked
mechanically interlocked
electrically interconnected
mechanically interconnected - CORRECT ANSWER✅✅mechanically interconnected
