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E-Bike Hall of Fame by LEVA

LEVA Technician Training & Certification

electric bicycles, scooters, electric kick scooters, electric skateboard, electric unicycle, onewheel, ebikes etc.

Mechanic/Technician EXAM

Levels 2 to 4

Step 1 of 17

5%

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Exam Questions
1) What is the primary difference between a PMM controller and a Sinusoidal controller?*
- A) Number and color of wire connections
- B) About $17.50
- C) Strength of back EMF interference, which influences battery discharge
- D) Smoothness of the control wave; a smoother ride for the user

2) What is “vehicle to vehicle communication”?*
- A) Turn signals, honking, polite hand gestures
- B) The ability to directly control other drivers and riders from your cellphone
- C) Protocols governing wireless exchange of information between vehicle systems
- D) Hand signals involving one finger on one or both hands - communication may be improved by waving and screaming

3) What tools are needed to easily install Anderson Connectors on a wiring harness?*
- A) Wire strippers and hot glue
- B) Wire strippers and Anderson crimper
- C ) A steady hand and the occasional application of obscene language
- D) Needle-nose pliers, electrical tape

4) How can you detect a genuine Anderson connector, avoiding a copy?*
- A) A watermark, visible when held up to the light
- B) Holographic foil on the packaging
- C) Text printed around the edge of the connector
- D) The eBay rating of your supplier

5) What represents the majority of E-bike service issues?
- A) Faulty batteries
- B) Poorly configured controllers
- C) Normal, non-electrical bicycle maintenance issues
- D) The tendency for an E-bike to become self- aware and demand equal treatment under the law

Please explain 5 ways to minimize the risk of a fire in a battery servicing workshop?*

7) How do you extinguish a lithium battery fire?*
- Extinguish the flame with an ABC extinguisher and cool the cells with water to stop thermal runaway
- Extinguish the flame with water and cool the cells with ice to stop thermal runaway
- Extinguish the flame with your body, then cool the cells by picking it up and blowing on it for 10 or 15 seconds to stop thermal runaway
- Extinguish the flame with sand and cool the cells with pure alcohol to stop thermal runaway

8) What are the functions of a multi-meter?
- A) Determining the number and capacity of cells within a battery
- B) Measuring voltage, resistance, continuity, and current
- C) Measuring the rate of discharge
- D) Measuring the Motor Speed and Watts

9) Will the future of working on e-bikes be mostly mechanical? Or mostly software-related?*
- A) Mechanical
- B) Software Related
Explain why:

10) How do you economically repair a malfunctioning display?
- A) Conduct the repairs yourself
- B) Drain out the liquid crystal and replace it with a fresh batch
- C) Ask the customer if they really *need* a display
- D) Throw it out and replace it

11) How can you easily access more information and support when facing an ebike repair problem?*
- A) Contact the BPSA
- B) Contact LEVA
- C) Look up for on Internet
- A) Contact the CPSC

12) What is needed to test a battery for capacity and basic health of the battery package?*
- A) Computerized battery analyzer
- B) Multi meter
- C) Contact your battery supplier
- A) Biking around the shop in circles, making careful notes of your speed, voltage, and terrain inclination until the battery is fully discharged

13) What does “follow the juice” mean?*
- A) Beginning troubleshooting at the motor and proceeding in sequence to the battery, until you find the point of failure
- B) Beginning troubleshooting at the power source and proceeding in sequence to the motor, until you find the point of failure
- C) That’s just the latest advertising campaign for the Florida Orange Juice Central Authority
- A) Beginning troubleshooting at the controller and proceeding in sequence to the motor and battery, until you find the point of failure

14) What amperage capacity should you plan when buying wire, or Andersons?*
- A) Higher capacity than you actually need
- B) Lower capacity than you actually need
- C) The exact capacity that you need
- A) It doesn’t really matter that much

15) What is the significance of “can-bus” for ebikes?*
- A) Enables the exchange of information between bikes and city busses
- B) Enables the exchange of information between other people’s bikes and your facebook account
- C) A largely useless widget that you can charge your customers extra for
- A) Enables exchange of information between bike components

Please write a short explanation of why you are taking this test.*
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