CABT Study Guide 2026
Everything you need to pass the CABT exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
CABT exam key facts
- The CABT exam is a closed-book exam made up of 100 multiple-choice questions. Source
- Candidates get two hours to complete the CABT exam. Source
- In 2026 the CABT exam costs $220 for AAMI members and $270 for non-members, and the fee is non-refundable. Source
- CABT candidates must wait at least 60 days before retaking the exam, may take it no more than three times in two years, and must wait one year after a third failed attempt. Source
- The CABT certification is valid for five years. Source
📋 CABT Exam Format at a Glance
📚 CABT Topics to Study (42)
✍️ Sample CABT Questions & Answers
1. A capacitor is connected in series with a resistor to an AC source. As frequency increases, what happens to the capacitive reactance (Xc)?
Capacitive reactance Xc = 1/(2πfC), so as frequency increases, Xc decreases.
2. What phenomenon occurs when an AC signal causes a transistor to conduct during only part of the input cycle in Class B amplification?
Crossover distortion occurs at the zero-crossing point in Class B push-pull amplifiers due to the transistor's 0.6V threshold voltage.
3. What is the primary function of the nephron in the kidney?
The nephron is the functional unit of the kidney, filtering blood and forming urine through filtration, reabsorption, and secretion.
4. A patient monitor's SpO2 waveform (plethysmograph) is present but the numeric value reads dashes. This most likely indicates:
When a waveform is visible but no numeric SpO2 is displayed, the signal quality or perfusion index is insufficient for the algorithm to calculate a reliable value.
5. What is the time constant (τ) of an RC circuit with R = 10 kΩ and C = 100 µF?
τ = RC = 10,000 Ω × 0.0001 F = 1 second.
6. An air-oxygen blender sounds an audible alarm during use. What is the most likely cause?
Blenders alarm when inlet pressures differ substantially (about 20 psi), which compromises mixing accuracy.
🎯 Free CABT Practice Tests
📖 CABT Guides & Articles
What Practice Test Geeks adds beyond an AI chat for CABT
An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:
- A timed, full-length CABT mock exam — 120 questions in 120 minutes with a 70% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
- A fixed CABT question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
- Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
- A printable CABT cheat sheet you can print or save as a PDF.
- CABT flashcards built from the same question bank.
- Free CABT practice tests with the correct answer shown after each question.
How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy
Sources & references
Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy
- aami.org — Eligibility, renewal, test dates, score validity, test delivery, fees, exam format, retake fee, retake policy, score release · verified Oct 2026