Aptitude Test Reading Comprehension Analysis Questions and Answers Flashcards

Passage: 'Ground fault circuit interrupters (GFCIs) detect tiny imbalances in current between the hot and neutral wires, typically as small as 4-6 milliamps. When an imbalance is detected, the GFCI trips within 1/40th of a second. GFCIs are required in wet locations such as bathrooms, kitchens, garages, and outdoor areas.' Which is the best title for this passage?

Answer: GFCI Devices: Function and Required Locations

The passage covers what GFCIs do (detect imbalances, trip quickly) and where they are required — matching 'Function and Required Locations.'

Passage: 'Overcurrent protection devices such as fuses and circuit breakers are designed to open a circuit when current exceeds a safe level. Fuses work by melting a metal element; once blown, they must be replaced. Circuit breakers trip a mechanical switch and can be reset after the fault is cleared.' What is one advantage of circuit breakers over fuses mentioned in the passage?

Answer: Circuit breakers can be reset without replacement

The passage says fuses must be 'replaced' while circuit breakers 'can be reset after the fault is cleared,' indicating reset capability is the stated advantage.

Passage: 'Wire gauge is inversely related to wire size — a lower gauge number means a thicker wire. For example, 12 AWG wire is thicker than 14 AWG wire. Thicker wires have lower resistance and can carry more current safely.' If a #10 AWG wire and a #8 AWG wire were compared, which could carry more current?

Answer: #8 AWG because lower numbers indicate thicker wire

#8 AWG is thicker (lower number = thicker). Thicker wires carry more current. So #8 AWG carries more current.

Passage: 'An arc flash is a dangerous release of energy caused by an electrical fault. The heat from an arc flash can exceed 35,000°F — four times the temperature of the sun's surface. Personal protective equipment (PPE) rated for the specific incident energy level must be worn when working near energized equipment.' What is the main safety requirement stated in this passage?

Answer: Wear appropriate PPE rated for the expected incident energy level

The passage specifically states that PPE 'rated for the specific incident energy level must be worn when working near energized equipment.'

Passage: 'Conductors in a conduit system heat up during operation. The NEC requires conductors to be derated when multiple current-carrying conductors share a conduit. For example, if 7-9 current-carrying conductors share a conduit, each conductor's ampacity must be reduced to 70% of its rated value.' What happens to a conductor's ampacity when 8 current-carrying conductors share a conduit?

Answer: It must be reduced to 70% of its rated value

The passage states that 7-9 conductors in a conduit requires derating to 70% of rated ampacity.

Passage: 'The apprenticeship program for the IBEW combines on-the-job training with classroom instruction. Apprentices typically complete 8,000 hours of field training and 900 hours of classroom instruction over five years. Upon completion, they become journeyman wiremen eligible for journeyman wages.' How many total hours of training do IBEW apprentices complete according to this passage?

Answer: 8,900 hours

8,000 hours on-the-job + 900 hours classroom = 8,900 total hours.