Red Seal Automotive Service Technician Exam (Interprovincial)
H. Hybrid and electric vehicles: practice questions
Our Red Seal Automotive Service Technician bank has 16 questions on this topic. Here are 5 of them with answers; the full mock exam draws from every topic, like the real one.
Question 1
Which Level 2 charging voltage does the SIU training give?
- 120 V
- 240 V
- 12 V
- 800 V DC
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B. 240 V — Level 1 is 120 V; Level 2 is 240 V; DC fast charging bypasses the onboard charger.
Question 2
What does the onboard charger in a battery electric vehicle do?
- Converts DC from the traction battery to three-phase AC for the motor
- Charges the 12 V battery only
- Stores energy
- Converts incoming AC to DC to charge the traction battery
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D. Converts incoming AC to DC to charge the traction battery — The onboard charger takes AC from the charge port, converts it to DC and monitors battery conditions.
Question 3
What colour identifies high-voltage cabling on hybrids and EVs?
- Green
- Black
- Yellow
- Orange
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D. Orange — CCOHS mentions orange cabling as a sign of a high-voltage vehicle.
Question 4
What does the inverter do when the vehicle is motoring?
- Steps the traction battery's high-voltage DC down to 12 V for the lights and accessories
- Generates three-phase AC from high-voltage DC to drive the motor
- Converts wall AC to DC
- Cools the battery
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B. Generates three-phase AC from high-voltage DC to drive the motor — The inverter generates three-phase AC from HV DC when motoring and rectifies AC to DC when generating.
Question 5
How often does the SIU training say high-voltage gloves must be recertified?
- Every 5 years
- Never, if they look fine
- Every week
- Every 6 months
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D. Every 6 months — Recertify every 6 months, plus an air check and visual inspection before each use.