Year 3 IEC FINAL Review Exam fully solved &
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Terms in this set (65)
___ is a type of overload relay used All of these
in a motor start.
a. Melting allow
b. Bimetallic
c. Magnetic
d. All of these
,A melting allow overload in a actuates when excessive motor circuit current is
magnetic motor starter ____. present and opens the control circuit to de-
Select one: energize the coil
a. actuates when excessive motor
circuit current is present and opens
only the affected motor circuit
power contacts on the starter
b. must be replaced after it
operates
c. can be reset immediately after it
operates
d. actuates when excessive motor
circuit current is present and opens
the control circuit to de-energize
the coil
e. actuates when excessive control
circuit current is present and opens
the control circuit to de-energize
the coil
A 240-volt, 3Φ motor would require 3
a starter with a minimum of ___
power pole(s) to open the circuit.
Select one:
a. 3
b. 1
c. 2
, Refer to Figure 321.13 Symbol S is a disconnect (or safety switch)
___.
Select one:
a. circuit interrupter (or breaker)
b. disconnect (or safety switch)
c. circuit breaker with thermal OLs
d. circuit breaker with magnetic OLs
e. circuit breaker with thermal and
magnetic OLs
Inherent motor protection devices automatically
are built into the motor and are
reset ___.
Select one:
a. manually
b. automatically
Inherent motor protection devices motor
are built into the ___ and are reset
automatically.
Select one:
a. motor
b. starter
When light strings are utilized on a immediately
construction site, empty sockets or
sockets with shattered lamps
should be replaced ___ after being
reported.
Select one:
a. before the next work shift
b. immediately
c. within 72 hours
d. within 24 hours
updated (latest version verified for accuracy) |
Latest!
Save
Terms in this set (65)
___ is a type of overload relay used All of these
in a motor start.
a. Melting allow
b. Bimetallic
c. Magnetic
d. All of these
,A melting allow overload in a actuates when excessive motor circuit current is
magnetic motor starter ____. present and opens the control circuit to de-
Select one: energize the coil
a. actuates when excessive motor
circuit current is present and opens
only the affected motor circuit
power contacts on the starter
b. must be replaced after it
operates
c. can be reset immediately after it
operates
d. actuates when excessive motor
circuit current is present and opens
the control circuit to de-energize
the coil
e. actuates when excessive control
circuit current is present and opens
the control circuit to de-energize
the coil
A 240-volt, 3Φ motor would require 3
a starter with a minimum of ___
power pole(s) to open the circuit.
Select one:
a. 3
b. 1
c. 2
, Refer to Figure 321.13 Symbol S is a disconnect (or safety switch)
___.
Select one:
a. circuit interrupter (or breaker)
b. disconnect (or safety switch)
c. circuit breaker with thermal OLs
d. circuit breaker with magnetic OLs
e. circuit breaker with thermal and
magnetic OLs
Inherent motor protection devices automatically
are built into the motor and are
reset ___.
Select one:
a. manually
b. automatically
Inherent motor protection devices motor
are built into the ___ and are reset
automatically.
Select one:
a. motor
b. starter
When light strings are utilized on a immediately
construction site, empty sockets or
sockets with shattered lamps
should be replaced ___ after being
reported.
Select one:
a. before the next work shift
b. immediately
c. within 72 hours
d. within 24 hours
