Reading Comprehension Analysis Flashcards

A technical manual states: 'Three-phase power is preferred over single-phase for motors above 1 HP because it provides smoother power delivery and greater efficiency.' A facility needs a 5 HP motor. What does the manual suggest?

Answer: A three-phase motor because it is more efficient for that power level

The manual states three-phase is preferred above 1 HP, and 5 HP exceeds that threshold.

A regulation reads: 'Grounding electrode conductors shall be installed in one continuous length without splices or joints, except where splices are made by irreversible compression-type connectors or exothermic welding.' A worker wants to splice a grounding electrode conductor using wire nuts. Is this permitted?

Answer: No, only irreversible compression connectors or exothermic welding are allowed

Wire nuts are not irreversible compression connectors, so the regulation prohibits their use for this splice.

A passage reads: 'The demand factor is the ratio of the maximum demand of a system to its connected load. A demand factor less than 1 indicates that not all connected equipment operates simultaneously.' A building has 200 A of connected load but a measured maximum demand of 140 A. What is its demand factor?

Answer: 0.70

Demand factor = maximum demand ÷ connected load = 140 ÷ 200 = 0.70.

A safety bulletin states: 'Arc flash hazard labels must be placed on all electrical equipment that requires examination, adjustment, servicing, or maintenance while energized.' A technician is asked to read a meter on an energized panel. Does the panel require an arc flash label?

Answer: Yes, because examination of energized equipment requires the label

The bulletin explicitly includes examination alongside maintenance, so reading a meter qualifies.

A passage explains: 'Voltage drop in a circuit is proportional to the resistance of the conductors and the current flowing through them. Using larger gauge wire reduces resistance and therefore reduces voltage drop.' A long run is experiencing excessive voltage drop. What does the passage suggest?

Answer: Use a larger gauge wire to reduce resistance

The passage directly states that larger gauge wire reduces resistance and therefore voltage drop.

A code section reads: 'Each multiwire branch circuit shall be provided with a means to simultaneously disconnect all ungrounded conductors at the point where the branch circuit originates.' What does 'simultaneously' require in practice?

Answer: A common trip or handle-tied breaker that opens all hot legs at once

Simultaneously means all ungrounded conductors open at the same time, requiring common-trip or handle-tied breakers.

An apprenticeship handbook states: 'Apprentices must complete a minimum of 8,000 hours of on-the-job training and 900 hours of related classroom instruction to be eligible for journeyman status.' An apprentice has 7,500 OJT hours and 950 classroom hours. What is their status?

Answer: Not eligible, because OJT hours are below the 8,000-hour requirement

Both requirements must be met independently; 7,500 OJT hours falls short of the 8,000-hour minimum.