ME 454 Mechatronics (Penn State) Exam 1 questions and answers Graded A+ The Greenswork Zero-turn radius lawnmower features a 60-volt battery - Is this safe? Probably not safe - the voltage is slightly above that of electrocution. The Greenswork Zero-t

ME 454 Mechatronics (Penn State) Exam 1 questions and answers Graded A+ The Greenswork Zero-turn radius lawnmower features a 60-volt battery - Is this safe? Probably not safe - the voltage is slightly above that of electrocution. The Greenswork Zero-turn radius lawnmower features a 60-volt battery. What assumptions are being made by the engineers? 1) The users will not touch the leads of the battery. 2) If the user touches the leads, the skin is not very conductive (not sweaty, for example). 3) The user will not drive the mower into water. 4) The voltage is close enough to the limit that, if a user is handling the battery, it is probably low enough in voltage to be safe to handle. The Greenswork Zero-turn radius lawnmower features a 60-volt battery. How is the battery safer by using lithium-ion technology? It won't easily poison the user or environment if handled, especially if the battery corrodes. How many 12-volt car batteries can be used in series before a possible electrocution? 4 (Must be less than 50 V, so 12 V * 4 = 48 V 5