Practice Test Geeks(CET) Certified Electronics Technician Practice Test

CET Cheat Sheet 2026

The 30 highest-yield CET facts, distilled from real exam questions. Print it, save it as a PDF, or study it here โ€” free, no sign-up.

75 questions
120 min time limit
75% to pass
  1. When an IC chip becomes unusually hot during operation, the first diagnostic step should be: โ†’ Check for correct supply voltage and verify no output is shorted
  2. An inverting op-amp amplifier has a feedback resistor Rf = 10 kฮฉ and input resistor Rin = 2 kฮฉ. What is the closed-loop voltage gain? โ†’ -5
  3. An electronics technician finds a device in the shop with no visible FCC ID. What is the most likely compliance issue? โ†’ The device may have been sold without required FCC equipment authorization
  4. In a reliability block diagram, series-connected components produce a system reliability that is: โ†’ Less than the lowest individual component reliability
  5. What does the slew rate of an op-amp specify? โ†’ The maximum rate of change of output voltage in V/ยตs
  6. Which parameter of a MOSFET is analogous to the transconductance of a BJT? โ†’ Transconductance (gm)
  7. When calibrating test equipment, a NIST-traceable calibration standard ensures: โ†’ Measurements can be traced to national standards for verified accuracy
  8. In Reporting Requirements & Standards, what is the FIRST step a CET professional should take when encountering a new case or situation? โ†’ Conduct a comprehensive assessment and gather all relevant information
  9. What does the acronym SEER stand for in US cancer data collection? โ†’ Surveillance, Epidemiology, and End Results Program
  10. In an electronics repair facility's registry, a 'nonconformance report' (NCR) is generated when: โ†’ A product or process fails to meet specified requirements
  11. A PNP transistor is suspected faulty. Using a DMM in diode-check mode, the base-emitter junction should read approximately: โ†’ 0.6โ€“0.7V with positive lead on emitter, near OL reversed
  12. In data acquisition, which technique involves taking multiple samples and averaging them to improve effective resolution? โ†’ Oversampling and decimation
  13. The superposition theorem applies only to circuits that are: โ†’ Linear and bilateral
  14. What is the function of a varactor (varicap) diode? โ†’ Act as a voltage-variable capacitor
  15. What does a Ground Fault Circuit Interrupter (GFCI) outlet protect against? โ†’ Electric shock from current leaking to ground through a person
  16. Thevenin's theorem states that any linear circuit can be replaced by: โ†’ A voltage source in series with an impedance
  17. What causes thermal runaway in a bipolar junction transistor? โ†’ Increased collector current raising junction temperature, further increasing current
  18. In test data management, 'data provenance' refers to: โ†’ The documented origin, history, and chain of custody of data
  19. What is the primary purpose of a 'nonconformance report' (NCR) in electronics production? โ†’ To document products or processes that do not meet specified requirements
  20. What is the purpose of thermal imaging in electronics troubleshooting? โ†’ To detect hot spots in circuits and identify faulty components.
  21. A technician discovers a hard drive containing customer records while repairing a computer. The best course of action is to: โ†’ Avoid accessing personal data and inform the customer
  22. Which ISO standard provides the framework for quality management systems most often referenced in electronics manufacturing compliance reports? โ†’ ISO 9001
  23. In a preventive maintenance registry, 'MTBF' is used to schedule service intervals. What does MTBF stand for? โ†’ Mean Time Between Failures
  24. In a multistage amplifier, the overall bandwidth compared to a single stage is: โ†’ Narrower
  25. What is the hexadecimal equivalent of binary 1101 1010? โ†’ DA
  26. What is the PRIMARY purpose of continuing education requirements in Cancer Registry Data Collection for CET professionals? โ†’ Maintaining current knowledge and competency as the field evolves
  27. In a circuit, the admittance Y is the reciprocal of: โ†’ Impedance
  28. Which coding system assigns unique numeric identifiers to ICs based on function and is maintained by JEDEC for memory devices? โ†’ JEDEC JEP106
  29. In binary arithmetic, what is the result of 1010 + 0111? โ†’ 10001
  30. In preventive maintenance registry systems, the term 'condition-based maintenance' (CBM) differs from time-based maintenance in that CBM: โ†’ Is triggered by actual equipment condition data rather than fixed time intervals
Turn these facts into recall:
๐Ÿƒ CET Flashcards๐Ÿ“š CET Study Guide
Was this helpful?