ELE 74 QUIZ 12 CONTACTORS AND MAGNETIC
MOTOR STARTERS QUESTIONS WITH DETAILED
VERIFIED AND 100% ACCURATE ANSWERS
ELE 74 QUIZ 12 CONTACTORS AND MAGNETIC MOTOR STARTERS QUESTIONS
WITH DETAILED VERIFIED AND 100% ACCURATE ANSWERS
SECTION 1: VERIFIED ELE 74 CHAPTER
Question 1
The ___ indicator on a trip indicator informs the operator or electrician why the
unit is not operating and that it is potentially capable of restarting with an
automatic reset.
A. green
B. yellow
C. orange
D. red
Answer: B
Explanation: The yellow indicator on a trip indicator signals that the unit has
tripped and is potentially capable of restarting automatically. This warns
personnel that the equipment may restart without warning.
,Question 2
A(n) ___ overload relay is an overload relay that resets automatically.
A. magnetic
B. bimetallic
C. ambient temperature
D. inherent
Answer: B
Explanation: A bimetallic overload relay uses a bimetallic strip that bends when
heated by excess current. When it cools, it automatically resets, restoring the
circuit.
Question 3
Normally, only one ___ unit with one or two contacts is added per contactor or
motor starter.
A. pneumatic timer
B. power pole
C. additional electrical contact
D. transient suppression module
Answer: A
Explanation: Pneumatic timer units are typically added one per contactor or
starter because they provide timed contact operation for control sequencing.
Question 4
___ control provides low-voltage release and low-voltage protection.
A. Two-wire
B. Three-wire
C. AC
D. DC
, Answer: B
Explanation: Three-wire control provides both low-voltage release (circuit opens
when voltage drops) and low-voltage protection (circuit does not automatically
restart when voltage returns).
Question 5
Contactor and magnetic motor starter modification devices include additional
electrical contacts, power poles, pneumatic timers, transient suppression
modules, and ___.
A. photoelectric switches
B. internal DMMs
C. additional busbar connections
D. control circuit fuse holders
Answer: D
Explanation: Control circuit fuse holders are a common modification device added
to contactors and starters to provide protection for the control circuit.
Question 6
A ___ is an overcurrent protection device with a mechanism that automatically
opens the circuit when an overload condition or short circuit occurs.
A. thermistor
B. circuit breaker
C. bimetallic thermodisc
D. current transformer
Answer: B
Explanation: A circuit breaker is an overcurrent protection device that
automatically opens the circuit when it detects an overload or short circuit
condition.
MOTOR STARTERS QUESTIONS WITH DETAILED
VERIFIED AND 100% ACCURATE ANSWERS
ELE 74 QUIZ 12 CONTACTORS AND MAGNETIC MOTOR STARTERS QUESTIONS
WITH DETAILED VERIFIED AND 100% ACCURATE ANSWERS
SECTION 1: VERIFIED ELE 74 CHAPTER
Question 1
The ___ indicator on a trip indicator informs the operator or electrician why the
unit is not operating and that it is potentially capable of restarting with an
automatic reset.
A. green
B. yellow
C. orange
D. red
Answer: B
Explanation: The yellow indicator on a trip indicator signals that the unit has
tripped and is potentially capable of restarting automatically. This warns
personnel that the equipment may restart without warning.
,Question 2
A(n) ___ overload relay is an overload relay that resets automatically.
A. magnetic
B. bimetallic
C. ambient temperature
D. inherent
Answer: B
Explanation: A bimetallic overload relay uses a bimetallic strip that bends when
heated by excess current. When it cools, it automatically resets, restoring the
circuit.
Question 3
Normally, only one ___ unit with one or two contacts is added per contactor or
motor starter.
A. pneumatic timer
B. power pole
C. additional electrical contact
D. transient suppression module
Answer: A
Explanation: Pneumatic timer units are typically added one per contactor or
starter because they provide timed contact operation for control sequencing.
Question 4
___ control provides low-voltage release and low-voltage protection.
A. Two-wire
B. Three-wire
C. AC
D. DC
, Answer: B
Explanation: Three-wire control provides both low-voltage release (circuit opens
when voltage drops) and low-voltage protection (circuit does not automatically
restart when voltage returns).
Question 5
Contactor and magnetic motor starter modification devices include additional
electrical contacts, power poles, pneumatic timers, transient suppression
modules, and ___.
A. photoelectric switches
B. internal DMMs
C. additional busbar connections
D. control circuit fuse holders
Answer: D
Explanation: Control circuit fuse holders are a common modification device added
to contactors and starters to provide protection for the control circuit.
Question 6
A ___ is an overcurrent protection device with a mechanism that automatically
opens the circuit when an overload condition or short circuit occurs.
A. thermistor
B. circuit breaker
C. bimetallic thermodisc
D. current transformer
Answer: B
Explanation: A circuit breaker is an overcurrent protection device that
automatically opens the circuit when it detects an overload or short circuit
condition.
