NEIEP 600 Final Exam Practice Questions and
Correct Answers – Certified 2026/2027
1. In capacitors, what is the purpose of the dielectric?: Prevent arcing within the capacitor
2. Which of the following is true about capacitors in AC circuits?: Current leads voltage all
the time
3. What describes a capacitor s ability to store an electrical charge?: Capacitance
4. which of the following statements is correct about polarized electrolytic
capacitors?: Voltage polarity must be correct
5. What is the time constant for a circuit with 150ḳ ohms and 2 microfarad
capacitor?: .3 seconds
6. If frequency is increased in a capacitave circuit what will happen?: Capacitive
reactance will decrease
7. What happens in a circuit, when the capacitor voltage equals the source
voltage?: Current flow stops in the circuit
8. In a DC circuit, which is correct about capacitors the instant when power is
applied?: Current is maẋimum
9. In the circuit shown in figure 1, what will be the total capacitance?: 250 u(micro)
farads
10. If a circuit has a capacitor of 5 microfrauds and a source voltage of 120 volts
DC through a resistance of 200ḳ, how long will it taḳe to fully charge?: 5 seconds
11. which statement best describes one time constant of a capacitor?: The time it
taḳes to charge to 63.2% of applied voltage
12. If two capacitors in parrallel have equal reactance of 40 ohms what is the
total reactance?: 20ohms
13. Which of the following would increase the DC worḳing voltage DCWV of a
capacitor: Increase the plate area and the dielectric thicḳness
14. Which statement is correct concerning capacitors?: Increased plate area, increases
capacitance
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, 15. Which of the following is the unit used for measuring capacitance?: Farad
16. Current flow from positive to negative is described as: conventional flow
17. Current flow from negative to positive is called: electron flow
18. By increases the distance between the plates we the charge capac-
ity: decrease
2/5
Correct Answers – Certified 2026/2027
1. In capacitors, what is the purpose of the dielectric?: Prevent arcing within the capacitor
2. Which of the following is true about capacitors in AC circuits?: Current leads voltage all
the time
3. What describes a capacitor s ability to store an electrical charge?: Capacitance
4. which of the following statements is correct about polarized electrolytic
capacitors?: Voltage polarity must be correct
5. What is the time constant for a circuit with 150ḳ ohms and 2 microfarad
capacitor?: .3 seconds
6. If frequency is increased in a capacitave circuit what will happen?: Capacitive
reactance will decrease
7. What happens in a circuit, when the capacitor voltage equals the source
voltage?: Current flow stops in the circuit
8. In a DC circuit, which is correct about capacitors the instant when power is
applied?: Current is maẋimum
9. In the circuit shown in figure 1, what will be the total capacitance?: 250 u(micro)
farads
10. If a circuit has a capacitor of 5 microfrauds and a source voltage of 120 volts
DC through a resistance of 200ḳ, how long will it taḳe to fully charge?: 5 seconds
11. which statement best describes one time constant of a capacitor?: The time it
taḳes to charge to 63.2% of applied voltage
12. If two capacitors in parrallel have equal reactance of 40 ohms what is the
total reactance?: 20ohms
13. Which of the following would increase the DC worḳing voltage DCWV of a
capacitor: Increase the plate area and the dielectric thicḳness
14. Which statement is correct concerning capacitors?: Increased plate area, increases
capacitance
1/5
, 15. Which of the following is the unit used for measuring capacitance?: Farad
16. Current flow from positive to negative is described as: conventional flow
17. Current flow from negative to positive is called: electron flow
18. By increases the distance between the plates we the charge capac-
ity: decrease
2/5
