FSG Quiz Electric Saturday

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The minimum tread depth for rain tires is 2.4mm (3/32 inch). This depth is necessary to ensure proper traction on wet surfaces and prevent hydroplaning. A shallower tread depth would not be able to channel water effectively, leading to reduced grip and increased risk of accidents in rainy conditions. A deeper tread depth may not be necessary and can cause excessive noise and wear on dry roads. Therefore, 2.4mm (3/32 inch) is the optimal minimum tread depth for rain tires.

A lock washer is not a positive locking mechanism according to the rules because it does not provide a reliable and secure means of preventing loosening or rotation of a fastener. While a lock washer can create tension and friction to help prevent loosening, it is not as effective as other options such as safety wire or nylon lock nuts, which are specifically designed to securely lock fasteners in place.

All drivers are required to wear underwear that has been certified to meet either the SFI 3.3 or FIA 8856-2000 standards. These standards ensure that the underwear provides adequate protection and meets the safety requirements for drivers. Wearing certified underwear helps to minimize the risk of injuries in case of accidents or fire incidents on the race track.

The driver's head restraint, its attachment, and mounting must withstand a force of at least 890 Newton in the rearward direction. This force is necessary to provide adequate protection to the driver's head and neck in the event of a rear-end collision or sudden deceleration. A lower force, such as 750 Newton or 510 Newton, would not provide sufficient protection, while a force of 1280 Newton would be excessive and potentially uncomfortable for the driver.

In steady-state cornering of an understeering car, the front wheels slip sideways more than the rear wheels due to the lateral acceleration. To maintain the radius of the turn, the driver needs to increase the steering angle. By increasing the steering angle, the front wheels can generate more lateral force, allowing the car to maintain the desired turn radius. This helps to compensate for the understeer and keep the car on track during the cornering maneuver.

CC-CV charging strategy should be used for a Li-Ion accumulator. This strategy involves two stages of charging - Constant Current (CC) and Constant Voltage (CV). In the CC stage, the battery is charged with a constant current until it reaches a certain voltage limit. Once the voltage limit is reached, the charger switches to the CV stage where the voltage is kept constant while the current gradually decreases. This strategy ensures that the battery is charged efficiently and safely, preventing overcharging and damage to the battery.

This picture illustrates the design error of poor load path into the chassis. This means that the structure or components in the picture are not properly transferring the load or forces into the chassis, which can lead to instability or failure of the system.

The correct answer states that if the driver elects to change to wet tires, they may do so during the driver change. This means that the driver can choose to switch to wet tires while they are being replaced by another driver. This implies that the driver change is a convenient time for the tire change, allowing for a seamless transition without wasting additional time.

The measures given in the question are dimensions used to dimension the cockpit internal cross section template. However, the measure of 7 mm is not used for this purpose.

The statement that is wrong is "Maintenance plugs must separate the internal cell segments such that the separated cell segments contain a maximum energy of 12MJ." This is incorrect because there is no requirement for maintenance plugs to separate cell segments based on energy levels. The other statements are all correct and provide necessary requirements for maintenance plugs, such as voltage limits, tool requirements, positive locking feature, electrical resistance, and usage during maintenance and segment removal.

The stored energy in an inductor is given by the formula E = 0.5 * L * I^2, where E is the energy, L is the inductance, and I is the current. We are given that the initial stored energy is 431J and the inductance is 248mH. Plugging these values into the formula, we can solve for the initial current. Then, we can use the same formula with the new desired stored energy of 731J to solve for the increased current. The difference between the two currents will give us the amount by which the current needs to be increased, which is approximately 76.78 A.

The energy consumption used for Efficiency Scoring will be 15.650MJ. This is calculated by subtracting the regenerated energy (4.736MJ) from the total energy drawn from the battery (19.912MJ). The remaining energy after regeneration is the net energy consumption, which is used to determine the efficiency score.

The given answer states that the firewall must be puncture resistant. This means that the firewall should be able to withstand any attempts to puncture or penetrate it, ensuring the integrity of the barrier it provides. This requirement is important to prevent any unauthorized access or breach through the firewall, ensuring the security of the system it is protecting.

The machining table is not a standard cost table because it does not provide information on the costs associated with the machining process. A standard cost table typically includes details on the costs of processes, tooling, and materials involved in the production or manufacturing process. However, the machining table specifically focuses on the operations and equipment used for machining, such as cutting, drilling, or shaping materials, rather than providing cost information.