EVT Cheat Sheet 2026

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

1. In Certified Electric Vehicle Technician, what is the PRIMARY purpose of conducting regular safety drills and exercises? → To ensure personnel can respond effectively in emergencies
2. What advantage do single-speed transmissions offer in EVs? → They provide smoother and more efficient operation
3. In Certified Electric Vehicle Technician practice, what is the FIRST step when a safety hazard is identified in the workplace? → Immediately secure the area and report the hazard
4. A DC fast charger rated at 150 kW charges a vehicle with a 400V battery pack. Approximately how many amps does it deliver? → 375 A
5. Why is thermal management critical in EV powertrains? → To prevent overheating and maintain efficiency
6. Which parameter does a variable frequency drive (VFD/inverter) primarily adjust to control motor speed? → The frequency of the AC output supplied to the motor
7. What is the purpose of regulatory compliance in EV service? → To avoid penalties and ensure legal operation
8. What is the most effective way to verify a repair was successful? → Retest the system under original failure conditions
9. A Tesla vehicle using a J1772 adapter shows a charging fault. The technician measures CP at +12V DC (no PWM). What does this indicate? → EVSE is in standby waiting for vehicle connection
10. During EV motor stator winding resistance testing, a technician finds one phase reading 0.0 Ω while the others read 0.3 Ω each. What does this indicate? → A shorted winding on the phase reading 0.0 Ω
11. What is the primary function of a battery in an electric vehicle? → To store and supply electrical energy to the motor
12. How does regenerative braking affect energy storage? → It stores energy back into the battery
13. What documentation is MOST critical to maintain for safety compliance in the Certified Electric Vehicle Technician field? → Incident reports, training records, and inspection logs
14. What is the purpose of the Control Pilot (CP) signal in an SAE J1772 charging circuit? → It communicates vehicle connection state and maximum available current to the EVSE
15. How should Certified Electric Vehicle Technician professionals handle technical procedures that have been updated or revised? → Review the updates, complete any required training, and implement the revised procedures
16. Why is documentation important in regulatory compliance? → To ensure accountability and regulatory evidence
17. Under which condition does ISO 6469-3 require the automatic disconnection of an EV's high-voltage system? → When a crash or rollover is detected via the vehicle's safety systems
18. A BMS flags a 'cell temperature delta high' fault with a 12 °C spread across the pack. What is the MOST likely root cause? → Blocked or restricted coolant flow causing uneven cooling of the pack
19. When performing a pre-work risk assessment on an EV HV system, which hazard energy source is often overlooked but must be controlled per OSHA LOTO? → Capacitors in the inverter retaining stored charge
20. Which instrument must be used to verify the absence of high voltage before touching HV components after removing the MSD? → A CAT III or CAT IV rated digital multimeter
21. Which document should an EV technician consult to determine the specific first responder disconnect location on an unfamiliar EV model? → The Emergency Response Guide (ERG) or manufacturer's first responder guide
22. When inspecting a CHAdeMO DC fast-charge port, a technician notices severe corrosion on the large power pins. What is the FIRST corrective action? → Tag out, remove from service, and replace the inlet assembly
23. A technician measures 0V on the Control Pilot line while the EV is plugged into a Level 2 EVSE. What does this most likely indicate? → EVSE is in a fault or not energized state
24. In EV safety, what does the 'IP67' rating on a battery enclosure indicate? → Dust-tight and protected against immersion up to 1 meter for 30 minutes
25. Which component converts mechanical energy to electrical energy during braking? → Electric motor
26. What is the function of a DC-DC converter in EVs? → It supplies power to 12V systems
27. What is the purpose of a technology needs assessment? → To identify gaps between current capabilities and desired outcomes
28. Why is high-voltage safety important when working on EV powertrains? → To prevent electric shock and injury
29. What does a Ground Fault Circuit Interrupter (GFCI) monitor in an EVSE installation to protect users? → Current imbalance between hot and neutral conductors
30. What is the primary function of a DC-DC converter in an electric vehicle? → Convert high-voltage traction battery power to 12V for auxiliary systems