NATIONAL ELEVATOR INDUSTRY
NEIEP
EDUCATIONAL PROGRAM
006
EST. 1967
International Union of Elevator Constructors
NEIEP 600: Electrical Theory & Capacitance
FINAL EXAMINATION — ELEVATOR CONSTRUCTOR APPRENTICESHIP
INSTITUTION PROGRAM
National Elevator Industry Educational Program (NEIEP) Elevator Constructor Apprenticeship — Electrical Theory
COURSE CODE COURSE TITLE
NEIEP 600 Electrical Theory & Capacitance Fundamentals
ACADEMIC YEAR EXAM TITLE
2025–2026 NEIEP 600 — Final Comprehensive Examination
TOTAL QUESTIONS EXAM FORMAT
40 Multiple Choice — Select the Single Best Answer
General Instructions
▸ Read each question carefully before selecting your answer.
▸ Select the single best answer for each multiple-choice item.
▸ This final examination covers capacitor theory and applications including capacitance, dielectrics, time
constants, capacitive reactance, series and parallel capacitor configurations, DC and AC circuit behavior,
capacitor types, failure modes, and safety practices.
▸ All questions reference NEIEP 600 course materials.
▸ Electronic devices, notes, and reference materials are prohibited during the examination.
Q MULTIPLE CHOICE QUESTIONS 40 Questions
,1. In capacitors, what is the purpose of the dielectric?
A. To conduct electricity between plates
B. To prevent arcing within the capacitor
C. To increase the resistance of the capacitor
D. To decrease the capacitance value
CORRECT ANSWER:
B. To prevent arcing within the capacitor
RATIONALE:
The dielectric is the insulating material between capacitor plates that prevents electrical arcing (direct
conduction) while allowing the electrostatic field to develop. It does not conduct electricity (A), increase
resistance (C), or decrease capacitance (D) — in fact, the dielectric material increases capacitance compared to
air.
2. Which of the following is true about capacitors in AC circuits?
A. Voltage leads current all the time
B. Current leads voltage all the time
C. Current and voltage are always in phase
D. Voltage and current alternate randomly
CORRECT ANSWER:
B. Current leads voltage all the time
RATIONALE:
In a capacitive AC circuit, current leads voltage by 90 degrees. This is because the capacitor must charge before
voltage develops across it — current flows first to build the charge, then voltage follows. The mnemonic "ELI the
ICE man" helps: ICE = Current leads voltage in Capacitive circuits.
, 3. What describes a capacitor's ability to store an electrical charge?
A. Resistance
B. Capacitance
C. Reactance
D. Inductance
CORRECT ANSWER:
B. Capacitance
RATIONALE:
Capacitance is the measure of a capacitor's ability to store electrical charge, measured in Farads. Resistance (A)
opposes current flow. Reactance (C) is opposition to AC. Inductance (D) is the property of coils/inductors.
4. Which of the following statements is correct about polarized electrolytic capacitors?
A. They can be connected in either direction
B. Voltage polarity must be correct
C. They have no positive or negative terminal
D. They are the same as disc capacitors
CORRECT ANSWER:
B. Voltage polarity must be correct
RATIONALE:
Electrolytic capacitors are polarized — they must be connected with the correct voltage polarity (+ to positive, −
to negative). Reverse connection can cause the capacitor to fail catastrophically (overheat, vent, or explode).
Disc capacitors (D) and other non-electrolytic types are generally non-polarized.
NEIEP
EDUCATIONAL PROGRAM
006
EST. 1967
International Union of Elevator Constructors
NEIEP 600: Electrical Theory & Capacitance
FINAL EXAMINATION — ELEVATOR CONSTRUCTOR APPRENTICESHIP
INSTITUTION PROGRAM
National Elevator Industry Educational Program (NEIEP) Elevator Constructor Apprenticeship — Electrical Theory
COURSE CODE COURSE TITLE
NEIEP 600 Electrical Theory & Capacitance Fundamentals
ACADEMIC YEAR EXAM TITLE
2025–2026 NEIEP 600 — Final Comprehensive Examination
TOTAL QUESTIONS EXAM FORMAT
40 Multiple Choice — Select the Single Best Answer
General Instructions
▸ Read each question carefully before selecting your answer.
▸ Select the single best answer for each multiple-choice item.
▸ This final examination covers capacitor theory and applications including capacitance, dielectrics, time
constants, capacitive reactance, series and parallel capacitor configurations, DC and AC circuit behavior,
capacitor types, failure modes, and safety practices.
▸ All questions reference NEIEP 600 course materials.
▸ Electronic devices, notes, and reference materials are prohibited during the examination.
Q MULTIPLE CHOICE QUESTIONS 40 Questions
,1. In capacitors, what is the purpose of the dielectric?
A. To conduct electricity between plates
B. To prevent arcing within the capacitor
C. To increase the resistance of the capacitor
D. To decrease the capacitance value
CORRECT ANSWER:
B. To prevent arcing within the capacitor
RATIONALE:
The dielectric is the insulating material between capacitor plates that prevents electrical arcing (direct
conduction) while allowing the electrostatic field to develop. It does not conduct electricity (A), increase
resistance (C), or decrease capacitance (D) — in fact, the dielectric material increases capacitance compared to
air.
2. Which of the following is true about capacitors in AC circuits?
A. Voltage leads current all the time
B. Current leads voltage all the time
C. Current and voltage are always in phase
D. Voltage and current alternate randomly
CORRECT ANSWER:
B. Current leads voltage all the time
RATIONALE:
In a capacitive AC circuit, current leads voltage by 90 degrees. This is because the capacitor must charge before
voltage develops across it — current flows first to build the charge, then voltage follows. The mnemonic "ELI the
ICE man" helps: ICE = Current leads voltage in Capacitive circuits.
, 3. What describes a capacitor's ability to store an electrical charge?
A. Resistance
B. Capacitance
C. Reactance
D. Inductance
CORRECT ANSWER:
B. Capacitance
RATIONALE:
Capacitance is the measure of a capacitor's ability to store electrical charge, measured in Farads. Resistance (A)
opposes current flow. Reactance (C) is opposition to AC. Inductance (D) is the property of coils/inductors.
4. Which of the following statements is correct about polarized electrolytic capacitors?
A. They can be connected in either direction
B. Voltage polarity must be correct
C. They have no positive or negative terminal
D. They are the same as disc capacitors
CORRECT ANSWER:
B. Voltage polarity must be correct
RATIONALE:
Electrolytic capacitors are polarized — they must be connected with the correct voltage polarity (+ to positive, −
to negative). Reverse connection can cause the capacitor to fail catastrophically (overheat, vent, or explode).
Disc capacitors (D) and other non-electrolytic types are generally non-polarized.
