Iec Final Exam Year 1, 2, 3 And 4 Exams | All Questions And Correct
Answers | Already Graded A+ | Latest Version | Verified Answers
What is the result if the neutral wire becomes open on a multiwire circuit having unequal loads?
Select one:
a.
The load of higher resistance would overheat and probably be damaged.
b.
The load of lesser resistance would overheat and probably be damaged.
c.
No effect until one load is turned off or opens.
d.
No effect. - (CORRECT ANSWER)The load of higher resistance would overheat and probably
be damaged.
Refer to Figure 128.202. ___ volts are applied across the water heater element.
Select one:
a.
120
b.
240
1
,c.
0
d.
480 - (CORRECT ANSWER)240
Circuits 7 and 9 share a neutral. This is a multiwire branch circuit. If Ckt. 7 is drawing 13 amps
and Ckt. 9 is drawing 16 amps, how much current is flowing in the neutral?
Select one:
a.
3
b.
13
c.
29
d.
16 - (CORRECT ANSWER)3
2
,The Code reference that specifies the type of disconnecting means (circuit breaker for example)
that can be used on a multiwire branch circuit that feeds devices mounted on the same yoke [a
stack switch or a duplex receptacle for example] is ___.
Note: Select N/A (not applicable) if there is not an NEC® requirement.
Select one:
a.
Article 100
b.
240.15(B)(1)
c.
404.8(A)
d.
N/A - (CORRECT ANSWER)240.15(B)(1)
Voltmeters are connected in ___ with the load when used to measure voltage across a load in a
circuit.
Select one:
a.
parallel
3
, b.
series - (CORRECT ANSWER)Parallel
The neutral has been broken in the circuit shown in Figure 128.418. The current through Lamp F
(IF) with the neutral opened is ___ amps.
Select one:
a.
6
b.
1
c.
2
d.
8
e.
3 - (CORRECT ANSWER)1
Refer to Figure 128.523. Each battery puts out 12 volts. The voltage applied to the load is ___
volts.
4
Answers | Already Graded A+ | Latest Version | Verified Answers
What is the result if the neutral wire becomes open on a multiwire circuit having unequal loads?
Select one:
a.
The load of higher resistance would overheat and probably be damaged.
b.
The load of lesser resistance would overheat and probably be damaged.
c.
No effect until one load is turned off or opens.
d.
No effect. - (CORRECT ANSWER)The load of higher resistance would overheat and probably
be damaged.
Refer to Figure 128.202. ___ volts are applied across the water heater element.
Select one:
a.
120
b.
240
1
,c.
0
d.
480 - (CORRECT ANSWER)240
Circuits 7 and 9 share a neutral. This is a multiwire branch circuit. If Ckt. 7 is drawing 13 amps
and Ckt. 9 is drawing 16 amps, how much current is flowing in the neutral?
Select one:
a.
3
b.
13
c.
29
d.
16 - (CORRECT ANSWER)3
2
,The Code reference that specifies the type of disconnecting means (circuit breaker for example)
that can be used on a multiwire branch circuit that feeds devices mounted on the same yoke [a
stack switch or a duplex receptacle for example] is ___.
Note: Select N/A (not applicable) if there is not an NEC® requirement.
Select one:
a.
Article 100
b.
240.15(B)(1)
c.
404.8(A)
d.
N/A - (CORRECT ANSWER)240.15(B)(1)
Voltmeters are connected in ___ with the load when used to measure voltage across a load in a
circuit.
Select one:
a.
parallel
3
, b.
series - (CORRECT ANSWER)Parallel
The neutral has been broken in the circuit shown in Figure 128.418. The current through Lamp F
(IF) with the neutral opened is ___ amps.
Select one:
a.
6
b.
1
c.
2
d.
8
e.
3 - (CORRECT ANSWER)1
Refer to Figure 128.523. Each battery puts out 12 volts. The voltage applied to the load is ___
volts.
4
