Timed code lookup practice

Everything in this course comes together under a clock. In week eleven, Dana sits a full practice exam at Brightwater's office on a Saturday morning, with Ray acting as proctor: 100 questions, four hours, her tabbed and highlighted code book, a basic calculator and scratch paper. This last lesson follows that practice exam and the strategies she uses to finish it, then sets out a series of lookup drills you can use in your own preparation. The goal is not to memorize answers but to make finding and reading the rules fast enough that the clock stops being the enemy.

Two passes through the exam

Dana's biggest change since week one is that she no longer works through the exam strictly in order. She uses two passes. On the first pass she answers every question she can answer quickly, roughly within her two-minute stop time, and marks every question that needs a long calculation or a lookup that is not going well. On the second pass she returns to the marked questions with the time she has saved.

Choosing a provisional answer before marking a question matters. Most computer-based licensing exams count only correct answers and do not deduct for wrong ones, but check your bulletin. If time runs out before you return, a provisional answer has a chance of being right; a blank has none. Ray reminds her of this every time she hesitates: 'Never leave one blank.'

Time checkpoints

Rather than checking the clock after every question, Dana sets checkpoints. On a four-hour, 100-question exam she wants to be at about question 25 after 35 minutes, question 50 after 75 minutes, question 75 after 115 minutes, and finished with the first pass by about 150 minutes. If she is behind at a checkpoint, she tightens her stop time for the next block; if she is ahead, she relaxes slightly.

# Checkpoint plan for an illustrative 4-hour, 100-question exam
total_minutes = 240
first_pass_minutes = 150
questions = 100
checkpoints = [25, 50, 75, 100]
for q in checkpoints:
    minute = first_pass_minutes * q / questions
    print(f"Question {q:3}: by minute {minute:5.1f}")
print("Left for marked questions and review:", total_minutes - first_pass_minutes, "minutes")

Question  25: by minute  37.5
Question  50: by minute  75.0
Question  75: by minute 112.5
Question 100: by minute 150.0
Left for marked questions and review: 90 minutes

On exam day Dana writes the checkpoints at the top of her scratch paper before the first question appears. It takes a minute and saves her from either rushing or drifting.

Sorting questions by type

Master exam questions fall into a few types, and each type has a typical time cost. Recognizing the type in the first few seconds lets Dana decide whether to answer now or mark it.

Long calculations are worth just as much as definitions on most exams. That is why they belong on the second pass: spending ten minutes on one of them early can cost several quick points later. On her week eleven exam Dana marks nine questions as long calculations and finishes all of them on the second pass.

Lookup drills

Between full practice exams, short drills build speed. Each drill below asks only for the location of the rule, the article, section or table, which is the skill this course teaches. The answers are given with the 2023 numbering; if you use another edition, finding the equivalent location is part of the exercise. Time yourself and aim for under a minute each.

Dana runs this drill three times in week ten. Her times go from an average of 48 seconds to 26 seconds. The improvement comes almost entirely from her tabs and from knowing the uniform layout of Chapter 3.

Dana's week eleven results

When Ray scores the practice exam, Dana has 81 correct out of 100, comfortably above the illustrative passing score of 70 to 75, and she finishes with 22 minutes left. Her first-week score was 58 with fourteen questions unanswered. Going through the misses together, they find that six were calculation errors, four were reading errors on negative questions, and nine were questions on topics she has not yet finished in the other core courses: motors, hazardous locations and emergency systems. That tells her exactly what to work on in the last week.

# Analyze a practice exam: where did the points go?
missed = {"calculation error": 6, "negative question misread": 4,
          "topic not yet studied": 9}
score = 100 - sum(missed.values())
print("Score:", score)
for reason, n in sorted(missed.items(), key=lambda kv: -kv[1]):
    print(f"  {reason:28} {n}")
print("Focus next week on:", max(missed, key=missed.get))

Score: 81
  topic not yet studied        9
  calculation error            6
  negative question misread    4
Focus next week on: topic not yet studied

The final week

Dana's last week is lighter than the weeks before it. She finishes the core course topics she flagged, does one more timed practice exam early in the week, and spends the last two days on short drills and rest. Cramming new material the night before an open-book exam tends to blur the structure she has worked so hard to learn.

Test day

On test day the logistics matter as much as the preparation. Read the admission letter and bulletin again the day before. Bring the required identification, usually a current government-issued photo ID with a signature, and arrive early, because late arrivals may be turned away. Expect staff to inspect your code book for prohibited notes or removable tabs. Most centers provide scratch paper or an erasable board and collect it at the end.

Once the exam starts, write your checkpoints on your scratch paper, take a breath, and begin the first pass. If a question rattles you, mark it and move on; the next one is worth exactly as much. If you notice you are behind at a checkpoint, tighten your stop time rather than panicking. And when you finish the first pass, look at the clock with satisfaction before starting the second: you are where you planned to be.

After the exam, and beyond

Dana passes her real exam three weeks later with an 84. The real work, she says afterward, starts with the license. As Brightwater's master, she is responsible for permits, for supervising journeymen and apprentices, and for knowing when the code changes. The navigation skills from this course turn out to be the ones she uses most: answering a journeyman's question on a job site, checking an inspector's citation, or estimating a job that involves equipment the company has never installed. The other core courses, on load calculations, conductors and protection, grounding, motors, specific occupancies and business law, build on this one, and your state course covers the licensing rules where you work.

Handling hard questions under pressure

Every exam contains a few questions that seem impossible: a topic you never studied, a wording you cannot parse, or a calculation that gives an answer not among the choices. Dana's routine for these is simple. First, eliminate any answer choices she knows are wrong, which often leaves two. Second, pick the better of the remaining choices as a provisional answer. Third, mark the question and move on. On the second pass, if time allows, she rereads the question slowly from the last sentence, which often reveals the word she misread the first time.

When a calculation gives an answer that is not among the choices, the cause is usually one of a handful of common mistakes: a missing demand factor, the wrong voltage, line-to-line instead of voltage to ground, single-phase instead of three-phase, or a unit error. Dana keeps a short checklist of these on her scratch paper and runs through it before redoing the whole calculation. More than half the time, one of the checks finds the error in under a minute.

Staying calm is a skill too. If Dana notices her heart rate rising, she sets down her pencil, takes three slow breaths and looks at the clock to confirm she is on schedule. It takes fifteen seconds and, as she puts it afterward, 'buys back the next ten minutes.'

Ray adds one piece of advice from his own exam, decades ago. When you finish the review and still have time left, do not start changing answers at random. Change an answer only if you find a specific reason, such as a misread word or an arithmetic error. Research on multiple-choice exams and Ray's own experience agree: first answers chosen carefully are right more often than second guesses made in a hurry at the end.