Nuclear-operator aptitude

About this practice suite

This suite prepares candidates for nuclear-operator aptitude selection in the energy, utilities, nuclear, mining, and natural resources sector with 5 skill areas: situational judgment, attention and concentration, technical reasoning, critical thinking and numerical reasoning. Every question was written by Novus editors for this suite — none are taken from live or leaked exams — and the full bank holds 52 scored questions across three modes, plus 8 reserve questions used to vary repeat attempts. Answer keys never ship to the browser: your answers are scored server-side, and results stay on your device.

Skills this suite practises

• Situational judgment — Evaluating workplace responses against role-relevant principles.
• Attention and concentration — Sustained focus, selective attention, and accuracy under time pressure.
• Technical reasoning — Applied technical principles, diagrams, tools, systems, measurements, and troubleshooting.
• Critical thinking — Evaluating evidence, assumptions, arguments, credibility, and alternative explanations.
• Numerical reasoning — Arithmetic, fractions, percentages, ratios, rates, estimation, word problems, and number relationships.

Sample questions from the guided bank

Two of the 10 guided-practice questions, shown exactly as they appear in a session. Answers and explanations are not printed here — keys stay on the server — so open guided practice to answer them and see how you did.

1. A reactor operator's first duty during unexpected plant response is to:

   • A. Leave the board unattended to investigate alone
   • B. Invent a faster unofficial workaround
   • C. Silence every alarm without reading it
   • D. Stabilize the plant using approved procedures and keep the crew informed

2. A peer suggests skipping a procedural step because 'we've done this a hundred times.' What is best?

   • A. Skip the step to save time
   • B. Follow the procedure as written and raise the concern through the crew process
   • C. Agree silently
   • D. Hide the omission from the log

Practice modes and timing

Guided practice is untimed-feeling and instructional; the mini-test is a short timed check; the full simulation mirrors a complete sitting. All three draw on separate question sets, so moving up a mode never repeats what you practised.

Study outline

Read the study outline for this suite’s skills, timings, and recommended lessons on one printable page, or download its standalone HTML file. The printable page can also be saved as a PDF from your browser.