NEIEP 400 Elevator Industry Final Assessment Study Guide
– Comprehensive Exam Prep, Practice Questions, Key
Concepts, Technical Notes & Certification Preparation for
Elevator Constructor Apprentices
Question 1: What is the standard unit of measurement for electrical resistance?
A. Ampere
B. Volt
C. Ohm
D. Watt
CORRECT ANSWER: C. Ohm
Rationale: Resistance is the opposition to current flow in an electrical circuit, and it is measured
in Ohms (Ω). Amperes measure current, Volts measure potential difference, and Watts
measure power.
Question 2: Which safety color is typically used to mark physical hazards such as striking
against, stumbling, or falling?
A. Red
B. Yellow
C. Orange
D. Green
CORRECT ANSWER: B. Yellow
Rationale: According to OSHA and ANSI standards, yellow is used to mark physical hazards like
striking against, stumbling, tripping, or falling. Red indicates danger or stop, orange warns of
dangerous parts, and green indicates safety equipment.
Question 3: In a series circuit, what happens to the total resistance when additional resistors
are added?
A. It decreases
B. It remains the same
C. It increases
D. It becomes zero
CORRECT ANSWER: C. It increases
Rationale: In a series circuit, total resistance is the sum of all individual resistances (Rt = R1 + R2
+ ...). Therefore, adding more resistors increases the total opposition to current flow.
Question 4: What does the acronym PPE stand for in electrical safety contexts?
A. Personal Power Equipment
B. Professional Protective Ensemble
C. Personal Protective Equipment
D. Primary Power Entry
CORRECT ANSWER: C. Personal Protective Equipment
Rationale: PPE stands for Personal Protective Equipment, which includes gear like gloves,
helmets, and goggles designed to protect workers from electrical hazards.
Question 5: Which instrument is used to measure electrical current in a circuit?
A. Voltmeter
B. Ohmmeter
,C. Ammeter
D. Wattmeter
CORRECT ANSWER: C. Ammeter
Rationale: An ammeter is specifically designed to measure the flow of electrical current in
amperes. A voltmeter measures voltage, an ohmmeter measures resistance, and a wattmeter
measures power.
Question 6: According to Ohm's Law, how is current (I) calculated?
A. I = V × R
B. I = V / R
C. I = R / V
D. I = V + R
CORRECT ANSWER: B. I = V / R
Rationale: Ohm's Law states that current is equal to voltage divided by resistance (I = V/R). This
defines the relationship between voltage, current, and resistance in a linear circuit.
Question 7: What type of current flows in only one direction?
A. Alternating Current
B. Direct Current
C. Reactive Current
D. Inductive Current
CORRECT ANSWER: B. Direct Current
Rationale: Direct Current (DC) flows consistently in one direction from the source to the load.
Alternating Current (AC) periodically reverses direction.
Question 8: Which wire gauge is larger in diameter?
A. 14 AWG
B. 12 AWG
C. 10 AWG
D. 8 AWG
CORRECT ANSWER: D. 8 AWG
Rationale: In the American Wire Gauge (AWG) system, a smaller number indicates a larger
diameter. Therefore, 8 AWG is larger than 10, 12, or 14 AWG.
Question 9: What is the primary function of a circuit breaker?
A. To measure voltage
B. To store electrical energy
C. To protect the circuit from overcurrent
D. To convert AC to DC
CORRECT ANSWER: C. To protect the circuit from overcurrent
Rationale: A circuit breaker is an automatic switch designed to protect an electrical circuit from
damage caused by excess current from an overload or short circuit.
Question 10: Which tool is best suited for cutting rigid metal conduit (RMC)?
A. Wire strippers
B. Hacksaw or pipe cutter
, C. Diagonal pliers
D. Screwdriver
CORRECT ANSWER: B. Hacksaw or pipe cutter
Rationale: Rigid Metal Conduit is a thick-walled tubing that requires a hacksaw or a specialized
pipe cutter for clean, safe cutting. Wire strippers and pliers are for wires, not conduit.
Question 11: What is the symbol for voltage in electrical formulas?
A. I
B. R
C. E or V
D. P
CORRECT ANSWER: C. E or V
Rationale: Voltage is commonly represented by the letter V (for Volts) or E (for Electromotive
Force) in electrical equations. I represents current, R represents resistance, and P represents
power.
Question 12: In a parallel circuit, the voltage across each branch is:
A. Different
B. Equal to the source voltage
C. Zero
D. Half of the source voltage
CORRECT ANSWER: B. Equal to the source voltage
Rationale: In a parallel circuit, all branches are connected directly across the voltage source,
meaning the voltage drop across each branch is equal to the source voltage.
Question 13: What is the color code for a grounded conductor (neutral) in a standard
120/240V system?
A. Black
B. Red
C. White or Gray
D. Green
CORRECT ANSWER: C. White or Gray
Rationale: The National Electrical Code (NEC) specifies that grounded conductors (neutrals)
must be identified by a continuous white or gray outer finish.
Question 14: Which device is used to step up or step down AC voltage?
A. Capacitor
B. Resistor
C. Transformer
D. Diode
CORRECT ANSWER: C. Transformer
Rationale: A transformer uses electromagnetic induction to increase (step up) or decrease (step
down) AC voltage levels between circuits.
Question 15: What is the frequency of standard AC power in the United States?
A. 50 Hz
B. 60 Hz
– Comprehensive Exam Prep, Practice Questions, Key
Concepts, Technical Notes & Certification Preparation for
Elevator Constructor Apprentices
Question 1: What is the standard unit of measurement for electrical resistance?
A. Ampere
B. Volt
C. Ohm
D. Watt
CORRECT ANSWER: C. Ohm
Rationale: Resistance is the opposition to current flow in an electrical circuit, and it is measured
in Ohms (Ω). Amperes measure current, Volts measure potential difference, and Watts
measure power.
Question 2: Which safety color is typically used to mark physical hazards such as striking
against, stumbling, or falling?
A. Red
B. Yellow
C. Orange
D. Green
CORRECT ANSWER: B. Yellow
Rationale: According to OSHA and ANSI standards, yellow is used to mark physical hazards like
striking against, stumbling, tripping, or falling. Red indicates danger or stop, orange warns of
dangerous parts, and green indicates safety equipment.
Question 3: In a series circuit, what happens to the total resistance when additional resistors
are added?
A. It decreases
B. It remains the same
C. It increases
D. It becomes zero
CORRECT ANSWER: C. It increases
Rationale: In a series circuit, total resistance is the sum of all individual resistances (Rt = R1 + R2
+ ...). Therefore, adding more resistors increases the total opposition to current flow.
Question 4: What does the acronym PPE stand for in electrical safety contexts?
A. Personal Power Equipment
B. Professional Protective Ensemble
C. Personal Protective Equipment
D. Primary Power Entry
CORRECT ANSWER: C. Personal Protective Equipment
Rationale: PPE stands for Personal Protective Equipment, which includes gear like gloves,
helmets, and goggles designed to protect workers from electrical hazards.
Question 5: Which instrument is used to measure electrical current in a circuit?
A. Voltmeter
B. Ohmmeter
,C. Ammeter
D. Wattmeter
CORRECT ANSWER: C. Ammeter
Rationale: An ammeter is specifically designed to measure the flow of electrical current in
amperes. A voltmeter measures voltage, an ohmmeter measures resistance, and a wattmeter
measures power.
Question 6: According to Ohm's Law, how is current (I) calculated?
A. I = V × R
B. I = V / R
C. I = R / V
D. I = V + R
CORRECT ANSWER: B. I = V / R
Rationale: Ohm's Law states that current is equal to voltage divided by resistance (I = V/R). This
defines the relationship between voltage, current, and resistance in a linear circuit.
Question 7: What type of current flows in only one direction?
A. Alternating Current
B. Direct Current
C. Reactive Current
D. Inductive Current
CORRECT ANSWER: B. Direct Current
Rationale: Direct Current (DC) flows consistently in one direction from the source to the load.
Alternating Current (AC) periodically reverses direction.
Question 8: Which wire gauge is larger in diameter?
A. 14 AWG
B. 12 AWG
C. 10 AWG
D. 8 AWG
CORRECT ANSWER: D. 8 AWG
Rationale: In the American Wire Gauge (AWG) system, a smaller number indicates a larger
diameter. Therefore, 8 AWG is larger than 10, 12, or 14 AWG.
Question 9: What is the primary function of a circuit breaker?
A. To measure voltage
B. To store electrical energy
C. To protect the circuit from overcurrent
D. To convert AC to DC
CORRECT ANSWER: C. To protect the circuit from overcurrent
Rationale: A circuit breaker is an automatic switch designed to protect an electrical circuit from
damage caused by excess current from an overload or short circuit.
Question 10: Which tool is best suited for cutting rigid metal conduit (RMC)?
A. Wire strippers
B. Hacksaw or pipe cutter
, C. Diagonal pliers
D. Screwdriver
CORRECT ANSWER: B. Hacksaw or pipe cutter
Rationale: Rigid Metal Conduit is a thick-walled tubing that requires a hacksaw or a specialized
pipe cutter for clean, safe cutting. Wire strippers and pliers are for wires, not conduit.
Question 11: What is the symbol for voltage in electrical formulas?
A. I
B. R
C. E or V
D. P
CORRECT ANSWER: C. E or V
Rationale: Voltage is commonly represented by the letter V (for Volts) or E (for Electromotive
Force) in electrical equations. I represents current, R represents resistance, and P represents
power.
Question 12: In a parallel circuit, the voltage across each branch is:
A. Different
B. Equal to the source voltage
C. Zero
D. Half of the source voltage
CORRECT ANSWER: B. Equal to the source voltage
Rationale: In a parallel circuit, all branches are connected directly across the voltage source,
meaning the voltage drop across each branch is equal to the source voltage.
Question 13: What is the color code for a grounded conductor (neutral) in a standard
120/240V system?
A. Black
B. Red
C. White or Gray
D. Green
CORRECT ANSWER: C. White or Gray
Rationale: The National Electrical Code (NEC) specifies that grounded conductors (neutrals)
must be identified by a continuous white or gray outer finish.
Question 14: Which device is used to step up or step down AC voltage?
A. Capacitor
B. Resistor
C. Transformer
D. Diode
CORRECT ANSWER: C. Transformer
Rationale: A transformer uses electromagnetic induction to increase (step up) or decrease (step
down) AC voltage levels between circuits.
Question 15: What is the frequency of standard AC power in the United States?
A. 50 Hz
B. 60 Hz
