Quiz Preparation

1. What penalty is given for a doo in Skidpad?

2. Which of the following requirements are a must for all non DV electric cars with wings, when moving the vehicle on the competition site? (Multiple choice)

3.

Which of the following parts are not part of the Shutdown Circuit? (Multiple choice)

4. What is the minimum tread depth of the rain tires?

5. What is the penatly for driving off course during acceleration?

6. What is the maximum number of drivers allowed to compete at an event?

7. How many percentage of points is the Cost Understanding in the Overall Cost and Manufacturing Event?

8. What does the yellow and red striped flag mean during Endurance and Autocross Event?

9. The car is tipped to 60° during the tilt test?

10.

The following parts are part of the Shutdown Circuit (Multiple choice)

1.

The following parts are part of the Shutdown Circuit (Multiple choice)

2. As an EV Team without DV, what is your maximum total score of Busniess Plan Presentation, Cost and Manufacturing, Skid Pad, Acceleration and Efficiency together?

3. What is the minimum diameter of a shutdown button placed on the side of the vehicle behind the driver’s compartment?

4. How many percentage of points are the Finances in the Business Plan Presentation Event?

5. What is the minimum diameter of the shutdown button in the cockpit?

6. What does a black flag mean?

7. What does the yellow flag mean during the driving disciplines?

8. What is not a ’system‘ in the Cost Reports Bill of Material?

9. How far is the car tipped during the tilt test?

10. What are not the diameter of the skidpad circles? (Multiple choice)

11. Your team completes their best manual skidpad run in 5.1 secs but goes off course. The fastest team overall completed their run in 4.6 secs. How many points did your team recieve for skidpad? Round to one decimal place.

12. What is the minimum score for the third place in the Business Plan finals (with three finalists)? (?? points)

13. Which of the following statements are correct? (Multiple Choice)

14.

The Electrical System Officer must: (Multiple Choice)

15. Your team completes their best autocross run in 71.9 secs but goes off course once and knocks over two cones. The fastest team overall completed their run in 73.2 secs. How many points did your team recieve for autocross? Round to one decimal place.

16. Your team completes their best manual skidpad run in 4.0 secs but knocks down 11 cones. The fastest team overall completed their run in 4.1 secs. How many points did your team recieve for skidpad? Round to one decimal place.

17.

The following items have to be on or attached to the push bar, if you are an EV team. (multiple choice)

18. Your team completes their best manual acceleration run in 3.3 secs, but at the end of the run knocks over one cone. The fastest team overall completed their run in 4.1 secs. How many points did your team recieve for acceleration? Round to one decimal place.

19. Your team completes their best manual acceleration run in 4.1 secs. The fastest team overall completed their run in 3.2 secs. How many points did your team recieve for acceleration? Round to one decimal place.

20. What are requirements of using a standard Impact Attenuator?

1. A capacitor with a capacitance of 100 μF is currently charged to a voltage of 199.8V. How much additional energy is needed to charge it to a voltage of 301.4V. Give answer to 4 significant figures in Joules

2. Your BSPD has been triggered although the driver did not touch the driving pedal. What could have gone wrong? (multiple choice)

3. Which of the following statements about the Tractive System Accumulator are wrong? (Multiple choice)

4. Your team is considering two languages, Verilog and VHDL, for programming an FPGA. Which languages could be used?

5. For this Wheatstone Bridge based NTC temperature measurement circuit, which is the lowest voltage measurement (VAB) that is possible to obtain at 60ºC? (NTC B: 3435 +/-1%) Give answer in Volts rounded to two decimal points.

6. The previous season you could recuperate only 27% of your initially stored energy, but this season a big improvement in your drivetrain allows you to recuperate 69% of the initially stored energy.  Knowing that you had 6.3 kWh of energy in your accumulator during the last season, how much energy must your new accumulator have, if you assume, that it’s the same length and speed? Give answer in kWh

7. Three inductors are connected as shown in the following figure:

Given that L1 = 2L2, find L1 and L2 such that the equivalence inductance is L = 0.7 H.
Give your answers in Henry, rounded to three decimal places separated by a comma (L1, L2)

8. Your head of powertrain has found a battery cell with excellent specifications and yet cheap. He decides upon a 142s2p accumulator configuration using the cells with a capacity of 5.8 Ah. The manufacturer specifies an internal impedance of 1.5 mOhm. However, after a while you notice the cells are of horrible quality and their real capacity varies significantly leading to an unbalanced accumulator.

He performed experiements to find an approximation of the cells SoC relation to their open-circuit voltage (EMF) as shown in the following figure:

Assume due to imbalance, exactly half of the accumulators cells are at 40% SoC and half at 80% SoC. What current will be drawn at the maximum allowed power usage? Give answer in Amps to nearest whole number

9. How long will it take to discharge C1 below 60V using the following constant current sink if it is initially charged at 565V? (MOSFET’s VGSth: 4V) Give answer to two decimal places in secs.

10. Which of the following statements about LV battery packs with lithium based chemistry other than LiFePo4 is not true?

1. A racing car rolls to a stop on a horizontal course with an initial speed of v. It decelerates
only by friction with a rolling resistance of μF, which is supposed to be independent of
the current velocity.
What is the distance s the car needs to stop?
v = 230mph, μF = 0.17, g = 9.81 m/s2.
Give your answer in meters, rounded to four significant places.

2. During last year acceleration a top speed of 100 km/h was reached. Due to big improvements in the new drivetrain, the new vehicle reaches a top speed of 120 km/h. The aerodynamics chief has some worries about the stability of the rear wing bracing due to the higher aerodynamics load. Given the geometry below, by how much % does the bearing force in point A change in comparison to last year? (The aerodynamic package did not change and therefore some values can be assumed for both vehicles). Give answer rounded to one decimal place.

CL=3.8     CD=1.2     A=1 m²     rho=1.1 kg/m³     L1=50 mm     L2= 100 mm     H1= 125 mm     H2= 165mm

3. Calculate the pull force on the plate in Newton. Round to 2 numbers seperated by a point (exanple: 9.13)

4. A lorry contains an engine with a power of 2.78 J/s. The lorry drives for 36 mins. Calculate the energy transferred in kJ rounded to three decimal places.

5. Your team is the first car at the design event during FSN2022 and it’s quite cold for this time of the year, 12 degrees C. To impress the judges, you decide to make some tea for them. What is the minimum required time to prepare the tea, knowing that you have to boil 4 tea cups of 370ml each and you have an electrical heater with a power of 500W. Give your answer to the nearest whole number in secs.

6.

7. How much current flows when 99 C passes down a wire in 11 s? Give answer in amps as a whole number.

8. Three inductors are connected as shown in the following figure:

Given that L1 = 2L2, find L1 and L2 such that the equivalence inductance is L = 0.7 H.
Give your answers in Henry, rounded to three decimal places separated by a comma (L1, L2)

9. in cm^3, round to decimal numbers sperated by point (13.5) no unit int the answer

10. Calculate the force Fc working at point C. Give answer in kN rounded to one decimal place.

Forces at point A: Rax = 3kN, Ray = 9kN, Ma = 10kN/m