IEC YEAR 1 FINAL EXAM NEWEST ACTUAL EXAM
COMPLETE 200 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+
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. - 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
c.
0
d.
480 - 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 - ANSWER: 3
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 - 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
b.
series - 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 - ANSWER: 1
Refer to Figure 128.523. Each battery puts out 12 volts. The voltage applied to the
load is ___ volts.
Select one:
a.
48
b.
0
c.
24
d.
36
e.
12 - ANSWER: 24
What is the minimum number of receptacles required in an unfinished basement?
Select one:
a.
2
b.
4
c.
1
d.
0 - ANSWER: 1
COMPLETE 200 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+
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. - 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
c.
0
d.
480 - 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 - ANSWER: 3
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 - 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
b.
series - 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 - ANSWER: 1
Refer to Figure 128.523. Each battery puts out 12 volts. The voltage applied to the
load is ___ volts.
Select one:
a.
48
b.
0
c.
24
d.
36
e.
12 - ANSWER: 24
What is the minimum number of receptacles required in an unfinished basement?
Select one:
a.
2
b.
4
c.
1
d.
0 - ANSWER: 1
