NCCER201 Full Exam Prep Pack: High-Yield Questions,
Expert Answers & Everything You Need to Pass with
Confidence
1. A 20-microfarad capacitor is in parallel with a 10-microfarad capacitor. The total
capacitance is _____.
10 microfarads
20 microfarads
30 microfarads
40 microfarads - ANSWER 30 Microfarads
2. Each of two equal capacitors in series has_____.
half the applied voltage
the original value of the applied voltage
twice the applied voltage
four times the applied voltage - ANSWER Half the applied voltage
3. The self-induced voltage across an inductance is produced by a change in
current with respect to ____.
frequency
time
capacitance
input voltage - ANSWER Time
4. Transformer windings are typically wrapped around a(n) _____.
polyester core
,insulated paper core
iron core
copper core - ANSWER Iron Core
5. What is the apparent power of an AC circuit with a source voltage of 240V and
a total current of 15A?
1,200W
2,400W
3,600W
7,200W - ANSWER 3,600W
6. What is the step-down turns ratio of a transformer with 150 turns in the primary
and 50 turns in the secondary?
1:3
3:1
10:1
10:3 - ANSWER 3:1
7. The opposing force that an inductor presents to the flow of alternating current is
called _____.
inductive resistance
inductive reactance
true resistance
inductive capacitance - ANSWER Inductive Reactance
8. The product of the source voltage and the total current is_____.
, true power
apparent power
reactive power
the power factor - ANSWER Apparent Power
9. The power factor can be defined as the ratio of true power to _____.
reactive power
total resistance
total current
apparent power - ANSWER Apparent Power
10. What is the step-up turns ratio of a transformer with 50 turns in the primary
and 100 turns in the secondary?
1:2
1:5
1:10
10:1 - ANSWER 1:2
11. If a transformer has 200 turns in the primary, 100 turns in the secondary, and
240VAC applied to the primary, the voltage across the secondary is _____.
60VAC
90VAC
120VAC
140VAC - ANSWER 120VAC
12. What is the true power in a 2A series RL circuit with a 50Ω resistor?
Expert Answers & Everything You Need to Pass with
Confidence
1. A 20-microfarad capacitor is in parallel with a 10-microfarad capacitor. The total
capacitance is _____.
10 microfarads
20 microfarads
30 microfarads
40 microfarads - ANSWER 30 Microfarads
2. Each of two equal capacitors in series has_____.
half the applied voltage
the original value of the applied voltage
twice the applied voltage
four times the applied voltage - ANSWER Half the applied voltage
3. The self-induced voltage across an inductance is produced by a change in
current with respect to ____.
frequency
time
capacitance
input voltage - ANSWER Time
4. Transformer windings are typically wrapped around a(n) _____.
polyester core
,insulated paper core
iron core
copper core - ANSWER Iron Core
5. What is the apparent power of an AC circuit with a source voltage of 240V and
a total current of 15A?
1,200W
2,400W
3,600W
7,200W - ANSWER 3,600W
6. What is the step-down turns ratio of a transformer with 150 turns in the primary
and 50 turns in the secondary?
1:3
3:1
10:1
10:3 - ANSWER 3:1
7. The opposing force that an inductor presents to the flow of alternating current is
called _____.
inductive resistance
inductive reactance
true resistance
inductive capacitance - ANSWER Inductive Reactance
8. The product of the source voltage and the total current is_____.
, true power
apparent power
reactive power
the power factor - ANSWER Apparent Power
9. The power factor can be defined as the ratio of true power to _____.
reactive power
total resistance
total current
apparent power - ANSWER Apparent Power
10. What is the step-up turns ratio of a transformer with 50 turns in the primary
and 100 turns in the secondary?
1:2
1:5
1:10
10:1 - ANSWER 1:2
11. If a transformer has 200 turns in the primary, 100 turns in the secondary, and
240VAC applied to the primary, the voltage across the secondary is _____.
60VAC
90VAC
120VAC
140VAC - ANSWER 120VAC
12. What is the true power in a 2A series RL circuit with a 50Ω resistor?
