IBEW Aptitude Test Reading Comprehension Analysis Questions and Answers 2 — Questions and Answers
Question 1: Read the passage: 'All electrical installations must conform to the National Electrical Code (NEC). The NEC is updated every three years to incorporate new safety findings. Inspectors verify compliance before a certificate of occupancy is issued.' What is the main purpose of the NEC according to this passage?
- To train electricians for the IBEW exam
- To ensure electrical safety through standardized codes (Correct answer)
- To provide a schedule for electrical inspections
- To certify electrical contractors for licensing
Correct answer: To ensure electrical safety through standardized codes
The passage states the NEC is a safety code updated to 'incorporate new safety findings,' indicating its primary purpose is ensuring electrical safety.
The passage focuses on NEC as a set of requirements ('must conform') updated for 'safety findings.' The main purpose is ensuring safe electrical installations — not training, scheduling, or licensing. Identifying the main purpose of a passage is a core reading comprehension skill on the IBEW NJATC aptitude test.
Question 2: Passage: 'Voltage is the electrical potential difference between two points. Without a potential difference, current cannot flow. This is analogous to water only flowing downhill when there is a height difference between two points.' What does this passage compare voltage to?
- Water pressure in a pipe
- The height difference causing water flow (Correct answer)
- The speed of water in a river
- The volume of water in a tank
Correct answer: The height difference causing water flow
The passage explicitly states voltage is 'analogous to' the height difference that causes water to flow downhill.
The passage creates an analogy: voltage (electrical potential difference) is like height difference between two points (which causes water to flow downhill). This type of analogy question tests whether you can identify the specific comparison made in a technical passage — a key IBEW reading comprehension skill.
Question 3: Passage: 'Lockout/tagout (LOTO) procedures require that electrical equipment be de-energized before maintenance begins. Each worker must apply their own personal lock to the energy isolation device. This ensures that no single worker can re-energize the equipment while others are still working on it.' According to the passage, why must each worker apply their own lock?
- To prove they have been trained on LOTO procedures
- To prevent any single worker from re-energizing equipment while others work (Correct answer)
- Because regulations require multiple locks for legal compliance
- To track which workers participated in the maintenance job
Correct answer: To prevent any single worker from re-energizing equipment while others work
The passage directly states: 'This ensures that no single worker can re-energize the equipment while others are still working on it.'
The final sentence directly answers why each worker applies their own lock: so no single person can restore power while others remain at risk. Technical safety passages on the IBEW aptitude test often contain explicit cause-effect statements like this one.
Question 4: Passage: 'Conduit must be supported at regular intervals to prevent sagging and mechanical damage. Rigid metal conduit (RMC) requires supports every 10 feet, while electrical metallic tubing (EMT) requires support every 10 feet but with additional supports within 3 feet of each box or fitting.' What is unique about EMT support requirements compared to RMC?
- EMT requires support every 5 feet instead of 10
- EMT requires additional supports near boxes and fittings (Correct answer)
- EMT does not require supports if installed horizontally
- EMT requires supports every 3 feet throughout its entire run
Correct answer: EMT requires additional supports near boxes and fittings
The passage says EMT needs supports every 10 feet like RMC, but also requires additional supports within 3 feet of each box or fitting.
Both RMC and EMT require support every 10 feet. EMT's unique requirement is additional supports within 3 feet of each box or fitting. Identifying specific differences in technical requirements is a practical reading comprehension skill for electrical apprentices.
Question 5: Passage: 'A journeyman electrician mentors apprentices under the supervision of a master electrician. The master electrician holds the license that covers all work done by their crew. The journeyman may direct work but cannot pull permits independently.' What can a journeyman electrician NOT do according to this passage?
- Mentor apprentices
- Direct the work of the crew
- Pull permits independently (Correct answer)
- Work under a master electrician
Correct answer: Pull permits independently
The passage explicitly states the journeyman 'cannot pull permits independently.'
The passage states three things about journeymen: they mentor apprentices, may direct work, but cannot pull permits independently. The answer is 'Pull permits independently.' Identifying stated limitations or restrictions in a passage is a targeted reading comprehension skill tested by IBEW.
Question 6: Passage: 'Three-phase power is more efficient for transmitting electricity over long distances than single-phase power. It provides smoother power delivery and allows motors to be smaller for the same output. Most industrial facilities use three-phase power for these reasons.' What is the main idea of this passage?
- Single-phase power is used in residential buildings
- Three-phase power offers efficiency and performance advantages (Correct answer)
- Motors work the same on three-phase and single-phase power
- Long-distance transmission requires special cables
Correct answer: Three-phase power offers efficiency and performance advantages
The passage describes multiple advantages of three-phase power (efficiency, smooth delivery, smaller motors), making that the main idea.
Every sentence in the passage supports the main idea that three-phase power is superior for industrial use due to efficiency and performance advantages. None of the other answer choices are supported by the passage content. Identifying the main idea of a paragraph is a foundational reading comprehension skill.
IBEW Aptitude Test Reading Comprehension Analysis Questions and Answers 2
Read the passage: 'All electrical installations must conform to the National Electrical Code (NEC).
The NEC is updated every three years to incorporate new safety findings.
Inspectors verify compliance before a certificate of occupancy is issued.' What is the main purpose of the NEC according to this passage?