Hero Electric Innovation Challenge Online Test Assessment

Ola and Uber operate on GSM (Global System for Mobile Communications) and GPS (Global Positioning System). GSM is a standard for mobile communication that allows these ride-hailing services to connect with their drivers and passengers through mobile networks. GPS is used to track the location of the vehicles and provide real-time navigation for drivers and accurate pick-up and drop-off locations for passengers. These technologies enable efficient and reliable operations for Ola and Uber, ensuring seamless communication and effective transportation services.

The weight of a vehicle affects power consumption, braking, and pickup. A heavier vehicle requires more power to move, resulting in increased power consumption. Additionally, the weight affects the braking distance, as a heavier vehicle takes longer to stop. Lastly, a lighter vehicle typically has better pickup or acceleration compared to a heavier vehicle. Therefore, all of the mentioned options are impacted by the weight of the vehicle.

The correct answer is "Brake is pressed" because when the brake pedal is pressed, it activates the brake light switch, which in turn illuminates the brake lamp. This is an important safety feature as it alerts drivers behind the vehicle that the brakes are being applied, indicating that the vehicle is slowing down or coming to a stop.

The correct answer is "Wheel Speed" because the speedometer in most two-wheelers measures the speed of the vehicle based on the rotation of the wheels. This is typically done using a sensor that detects the rotation of the wheel and calculates the speed based on the number of rotations per unit of time. This measurement is important for the rider to know how fast they are traveling and to maintain a safe and controlled speed while riding.

The BMS (Battery Management System) of the battery is required for both protection and cell balancing. Protection refers to the monitoring and control of various parameters such as voltage, current, and temperature to prevent overcharging, over-discharging, and overheating, which can damage the battery or pose safety risks. Cell balancing, on the other hand, involves equalizing the charge levels of individual cells within a battery pack to ensure optimal performance and longevity. Therefore, the correct answer is both (a) and (b).

CVT transmission provides better acceleration compared to traditional transmissions because it allows for seamless gear shifting, ensuring that the engine operates at its optimal RPM range. This enables the vehicle to accelerate more quickly and smoothly.

The unit for the capacity of a battery is Ampere-Hour. This unit represents the amount of electrical charge that a battery can deliver or store over time. It is a measure of the battery's capacity to provide a certain amount of current for a specific duration.

MCB stands for Miniature Circuit Breaker. This device is used to protect electrical circuits from overloads and short circuits. It automatically interrupts the flow of electricity when it detects a fault, preventing damage to the circuit and potential hazards such as fire or electrocution. MCBs are compact in size and are commonly used in residential and commercial buildings. They are designed to trip quickly in case of an electrical fault, providing efficient and reliable protection for electrical systems.

The energy density of conventional lead acid batteries is lower than that of modern lithium-ion batteries. This means that lead acid batteries can store less energy per unit volume or weight compared to lithium-ion batteries. Lithium-ion batteries have a higher energy density, making them more efficient and capable of providing longer-lasting power in a smaller and lighter package.

When cells are connected in series, the voltage of the battery pack increases while the capacity remains the same. In this case, since there are 14 cells of 3.7v each connected in series, the resultant voltage of the battery pack will be 14 x 3.7v = 51v. The capacity of each cell is 24 Ah, and since the cells are connected in series, the capacity of the battery pack will remain the same at 24 Ah. Therefore, the correct answer is 51v 24Ah.

Hall sensor is used in BLDC motors for detecting the direction.

LED lamps used in automotive have several advantages, including low power consumption, which helps to conserve energy and extend the battery life of the vehicle. They are also commonly used for daytime running lights, providing increased visibility and safety on the road. Additionally, LED lamps offer a stylish and modern look to the vehicle, enhancing its overall appearance. Therefore, the correct answer is that LED lamps are used in automotive for all of the above reasons.

SOC stands for State of Charge, which refers to the current amount of charge present in a battery relative to its maximum capacity. SOH stands for State of Health, which represents the overall condition and performance capability of a battery. DOD stands for Depth of Discharge, which indicates the amount of battery capacity that has been used relative to its maximum capacity. All of these terms are related to batteries and are used to measure and assess their performance and capacity.

The correct answer is "All of above" because two-wheeler safety norms in the current year include all of the mentioned features - ABS (Anti-lock Braking System), CBS (Combined Braking System), and Daylight Running lights. These safety features are implemented to enhance the safety of two-wheeler riders and reduce the risk of accidents. ABS prevents the wheels from locking up during sudden braking, CBS distributes braking force between front and rear wheels, and Daylight Running lights improve visibility of the vehicle during daytime.

The correct answer is V*Ah. The Watt-Hour of a battery is calculated by multiplying the voltage (V) of the battery by the ampere-hour (Ah) rating of the battery. This calculation gives the total amount of energy that the battery can deliver over a specific period of time.

The mechanical output of the motor can be calculated by multiplying the voltage (48V) by the current (17A) and the efficiency (85%). Therefore, the calculation would be: 48V x 17A x 0.85 = 694 Watt.

Both ARAI and ICAT are certifying bodies in India that certify electric vehicles.

The C-rate is a measure of the rate at which a battery is charged or discharged relative to its capacity. In this case, the C-rate is 0.5C, which means that the recommended discharge current should be half of the battery's capacity. The battery has a capacity of 20Ah, so half of that would be 10A. Therefore, the recommended discharge current is 10A.

The given information states that the cars Swift, Honda, I10, and Figo have online Fuel Economy. Out of these options, Honda is the correct answer.

A bigger wheel size is recommended for a better ride because larger wheels have a larger contact patch with the road, resulting in improved stability and smoother handling. The increased wheel diameter also helps to absorb bumps and vibrations, providing a more comfortable driving experience. Additionally, bigger wheels can enhance the overall appearance of the vehicle, giving it a more stylish and aggressive look.

The correct answer is "Under Seat". Electric cars typically have their batteries placed under the seat. This location allows for better weight distribution and stability, as well as maximizing interior space. Placing the battery under the seat also helps to lower the car's center of gravity, which improves handling and overall driving dynamics. Additionally, this location helps protect the battery from external elements and potential damage.

The backup in hours can be calculated by dividing the battery capacity (25Ah) by the load (500W) and multiplying it by the battery voltage (48V). Therefore, the backup in hours would be (25Ah / 500W) * 48V = 2.4 hours.

VRLA (Valve Regulated Lead Acid) is not a Li-ion (Lithium-ion) chemistry. Li-ion batteries use lithium ions to store and release energy, whereas VRLA batteries use lead-acid chemistry. NMC (Nickel Manganese Cobalt), LFP (Lithium Iron Phosphate), and LMO (Lithium Manganese Oxide) are all examples of Li-ion chemistries commonly used in rechargeable batteries.

Scooters are fatigue tested to determine their durability and performance under different conditions. The given options represent the values of g-forces that the scooters are tested for. The correct answer is 3 g, which means that the scooters are subjected to a force equivalent to three times the acceleration due to gravity. This test helps ensure that the scooters can withstand high levels of stress and vibrations during operation without experiencing any structural or mechanical failures.

The higher voltage in automotive systems can lead to EMI/EMC issues. EMI (Electromagnetic Interference) refers to the disturbance caused by electromagnetic radiation from an external source, which can interfere with the proper functioning of electronic devices. EMC (Electromagnetic Compatibility) is the ability of electronic devices to operate without being affected or causing interference to other devices in their electromagnetic environment. Higher voltage levels can generate more electromagnetic radiation, increasing the risk of EMI/EMC problems. Therefore, EMI/EMC is a valid concern when dealing with higher voltage in automotive systems.

In an ideal case, the charging current for a 200Ah battery would be 0.5C. The "C" in this context refers to the battery's capacity, so 0.5C means half the battery's capacity. Therefore, for a 200Ah battery, the ideal charging current would be 100A (0.5 x 200 = 100).

The speed of the scooter can be calculated using the formula: Speed = 2πr × RPM, where r is the radius of the tire and RPM is the wheel rpm. Substituting the given values, we get Speed = 2 × 3.14 × 0.201 × 470 = 35.5 kmph.

FAME (Faster Adoption and Manufacturing of (Hybrid &) Electric Vehicles) is a scheme in India that was created for promoting electric vehicles. It provides financial incentives to both buyers and manufacturers of electric vehicles in order to accelerate their adoption and manufacturing in the country. The scheme aims to reduce dependence on fossil fuels, decrease vehicular emissions, and contribute to a cleaner and greener environment.

The Indian driving cycle for 2 & 3 wheelers has a speed capping at 42 kmph. This means that the maximum speed allowed for these vehicles during the driving cycle is 42 kmph. This speed limit is imposed to ensure safety on the roads and to prevent accidents. By setting a lower speed limit, it reduces the risk of accidents and allows for better control and maneuverability of these vehicles.

The DC-DC converter in electric vehicles is used for controlling lights. This converter is responsible for converting the high voltage DC power from the battery into the lower voltage DC power required for operating the lights in the vehicle. It ensures that the lights receive the appropriate voltage and current for their operation, thereby enabling efficient and reliable lighting functionality in electric vehicles.