Page 1 of 18
ELE 146 EXAM | FREQUENTLY TESTED
QUESTIONS WITH CORRECT ANSWERS |
BRAND NEW!
Contacts are used in: - ✔✔✔ Correct Answer > Contactors
What does DPST-DB stand for? - ✔✔✔ Correct Answer > Double Pole
Single Throw - Double Break
In a truth table, an O represents what condition of the contacts? -
✔✔✔ Correct Answer > Open (open contact)
What is the main advantage of using a joystick in an application
such as moving the passenger loading ramp to and from an
airplane door? - ✔✔✔ Correct Answer > Two advantages are being able
to move the loading ramp forward or backwards based on your
needs, and not having to remove your hands from the joystick nor
your eyes from the task being preformed.
In a joystick symbol, what does the dot represent? - ✔✔✔ Correct
Answer > position where contact will close
,Page 2 of 18
If the moving part of a limit switch is drawn below the contacts in
the symbol, is the switch NO/NO held closed or NC/NC held
open? - ✔✔✔ Correct Answer > NO: held closed NC: held open
If the moving part of the limit switch is drawn above the contacts
in the symbol, is the switch NO/NO held closed or NC/NC held
open? - ✔✔✔ Correct Answer > When NC is closed, NO will be held
open
. What type of limit switch actuator allows detection of a moving
object from any direction except head on? - ✔✔✔ Correct Answer >
push roller
What type of limit switch actuator allows the arm length to be
adjusted to meet the application? - ✔✔✔ Correct Answer > levers
When a foot switch has three positions, does the toe usually
operate all three positions? - ✔✔✔ Correct Answer > No
Is the OFF position of a foot switch usually a maintained position
or a spring-loaded position? - ✔✔✔ Correct Answer > spring loaded
position
, Page 3 of 18
When a pressure switch is rated in "in. WC," what does "in. WC"
stand for? - ✔✔✔ Correct Answer > inches of Water Column
If a pressure switch is used to maintain a set pressure, are NO or
NC contacts used to control the compressor motor starter? - ✔✔✔
Correct Answer > NC
If a temperature switch is used in a heating system to maintain a
set temperature, are NO or NC contacts used to control the
heating contactor? - ✔✔✔ Correct Answer > heating system is
controlled using NC contact
If a temperature switch is used in a cooling system to maintain a
set temperature, are NO or NC contacts used to control the air
condition system? - ✔✔✔ Correct Answer > cooling systems use NO
1. If a flow switch is used to sound an alarm when there is no
flow, are NO or NC contacts used to control the alarm? - ✔✔✔
Correct Answer > NO contacts
If a flow switch is used to detect flow in an automatic sprinkler
system that has detected a fire and opened the sprinklers to
flow, are NO or NC contacts used to control the alarm? - ✔✔✔
Correct Answer > NC contacts
ELE 146 EXAM | FREQUENTLY TESTED
QUESTIONS WITH CORRECT ANSWERS |
BRAND NEW!
Contacts are used in: - ✔✔✔ Correct Answer > Contactors
What does DPST-DB stand for? - ✔✔✔ Correct Answer > Double Pole
Single Throw - Double Break
In a truth table, an O represents what condition of the contacts? -
✔✔✔ Correct Answer > Open (open contact)
What is the main advantage of using a joystick in an application
such as moving the passenger loading ramp to and from an
airplane door? - ✔✔✔ Correct Answer > Two advantages are being able
to move the loading ramp forward or backwards based on your
needs, and not having to remove your hands from the joystick nor
your eyes from the task being preformed.
In a joystick symbol, what does the dot represent? - ✔✔✔ Correct
Answer > position where contact will close
,Page 2 of 18
If the moving part of a limit switch is drawn below the contacts in
the symbol, is the switch NO/NO held closed or NC/NC held
open? - ✔✔✔ Correct Answer > NO: held closed NC: held open
If the moving part of the limit switch is drawn above the contacts
in the symbol, is the switch NO/NO held closed or NC/NC held
open? - ✔✔✔ Correct Answer > When NC is closed, NO will be held
open
. What type of limit switch actuator allows detection of a moving
object from any direction except head on? - ✔✔✔ Correct Answer >
push roller
What type of limit switch actuator allows the arm length to be
adjusted to meet the application? - ✔✔✔ Correct Answer > levers
When a foot switch has three positions, does the toe usually
operate all three positions? - ✔✔✔ Correct Answer > No
Is the OFF position of a foot switch usually a maintained position
or a spring-loaded position? - ✔✔✔ Correct Answer > spring loaded
position
, Page 3 of 18
When a pressure switch is rated in "in. WC," what does "in. WC"
stand for? - ✔✔✔ Correct Answer > inches of Water Column
If a pressure switch is used to maintain a set pressure, are NO or
NC contacts used to control the compressor motor starter? - ✔✔✔
Correct Answer > NC
If a temperature switch is used in a heating system to maintain a
set temperature, are NO or NC contacts used to control the
heating contactor? - ✔✔✔ Correct Answer > heating system is
controlled using NC contact
If a temperature switch is used in a cooling system to maintain a
set temperature, are NO or NC contacts used to control the air
condition system? - ✔✔✔ Correct Answer > cooling systems use NO
1. If a flow switch is used to sound an alarm when there is no
flow, are NO or NC contacts used to control the alarm? - ✔✔✔
Correct Answer > NO contacts
If a flow switch is used to detect flow in an automatic sprinkler
system that has detected a fire and opened the sprinklers to
flow, are NO or NC contacts used to control the alarm? - ✔✔✔
Correct Answer > NC contacts
