ELECTRICAL TROUBLESHOOTING TPC 210 | QUESTIONS
AND ANSWERS | 2026 UPDATE | WITH COMPLETE
SOLUTION
On an electrical diagram, a control relay is indicated by the designation...
Answer - CR
The NEC requires a fuse to be installed in all ______ conductors Answer -
ungrounded
Cross-references to the different locations of limit switches in a diagram are
provided by... Answer - arrows next to the symbols line number
A control panel layout shows the... Answer - physical arrangement of all
components
A sequence of operation is used with... Answer - an elementary diagram
A riser diagram shows the... Answer - power distribution wiring from input
through output
On a blueprint, wall outlets are indicated by a circle with... Answer - a short
line drawn to it
, In addition to the locations of lighting and lighting panels, lighting diagrams
show the locations of... Answer - telephone outlets
A power installation drawing shows... Answer - only power outlets
The actual location and routing of circuits is shown on a... Answer - wiring
diagram
What is most affected by overvoltage? Answer - slow speed motors
The maintained start-stop device provides... Answer - only undervoltage
release
What provides both overload protection and short-circuit protection in one
unit? 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... 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. 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...
Answer - controller
Overvoltage, excessive current, too-frequent operation are possible causes of
______ magnet coils. Answer - burned or short-circuited
AND ANSWERS | 2026 UPDATE | WITH COMPLETE
SOLUTION
On an electrical diagram, a control relay is indicated by the designation...
Answer - CR
The NEC requires a fuse to be installed in all ______ conductors Answer -
ungrounded
Cross-references to the different locations of limit switches in a diagram are
provided by... Answer - arrows next to the symbols line number
A control panel layout shows the... Answer - physical arrangement of all
components
A sequence of operation is used with... Answer - an elementary diagram
A riser diagram shows the... Answer - power distribution wiring from input
through output
On a blueprint, wall outlets are indicated by a circle with... Answer - a short
line drawn to it
, In addition to the locations of lighting and lighting panels, lighting diagrams
show the locations of... Answer - telephone outlets
A power installation drawing shows... Answer - only power outlets
The actual location and routing of circuits is shown on a... Answer - wiring
diagram
What is most affected by overvoltage? Answer - slow speed motors
The maintained start-stop device provides... Answer - only undervoltage
release
What provides both overload protection and short-circuit protection in one
unit? 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... 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. 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...
Answer - controller
Overvoltage, excessive current, too-frequent operation are possible causes of
______ magnet coils. Answer - burned or short-circuited
