Quiz Preparation

1. What does the red flag mean during the driving disciplines?

2.

In the event of unsportsmanlike conduct, 25 penalty points will be deducted from the team’s overall score. A second violation will result in an additional 100 penalty points deducted from the team’s overall score.

3. How many different tyre sizes can be used on a car during an Autocross run?

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

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

6. Ten pages of text are allowed in the Engineering Design Report

7. What does a black flag mean?

8. What is the diameter of the inside skidpad circle?

9. 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)

10. In which currency must the costs be displayed in the CBOM?

1. 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.

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 documents is directly evaluated during Engineering Design Event?

4. You want to use this shutdown button left and right between the main hoop and the main hoop bracings. Is this application rules compliant? (Multiple Choice)

5. The team at an event with the highest points in the Buisness Plan Presentation but not reaching the finals has 67 points. Your team received 59 points. What is your Business Plan Presentation Score? Round to one decimal place & don’t forget to use a point instead of comma

6. What is the penatly for driving off course during endurance?

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

8. Your team completes their best manual skidpad run in 5.9 secs. The fastest team overall completed their run in 5.1 secs. How many points did your team recieve for skidpad? Round to one decimal place.

9. What is the minimum height of the university name and the car number added together?

10. Your Team Sponsor offers you a Driver’s Harness. After examining the harness and the rules, an engineer in your team reports that the attachment of the harness can not be welded to the chassis structure. Furthermore, the engineer makes 4 statements. Which of these statements is true?

11. Your team completes their best manual acceleration run in 4.2 secs. 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.

12. Ten pages of text are allowed in the Engineering Design Report

13. What is the minimum allowed ground clearance, excluding driver?

14. 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?

15. In which currency must the costs be displayed in the CBOM?

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

17. What is the maximum duration of the Business Plan Presentation?

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.

The Electrical System Officer must: (Multiple Choice)

20. How many different tyre sizes can be used on a car during an Autocross run?

1. For the shown drive train, the input rotational speed is 3600 min-1, and the number of teeth of the sprocket is z1 = 20.
ease note: n2 = n3, n4 = n5, n6 = n7.
The number of teeth of the sprockets are:
z1 = 20, z2 = 45, z3 = 24, z4 = 55, z5 = 30, z6 = 43, z7 = 15, z8 = 53
Calculate the rotational speed in min^-1 for the final sprocket z8 where the driveshafts are mounted. Round to one decimal.

2. The sequence x[n]=(-1)^n is obtained by sampling the continuouse-time sinusoidal signal x(t)= cos(w0t) at 1-ms intervals, i.e.,

Determine the three smallest distinct possible values of w0 as a multiple of nx10^3 in the following format: w0 1, w0 2, w0 3, e.g 1, 2, 3

3. The truss structure shown in the figure is loaded with the forces F1, F2 and F3. The truss structure is supported in points A and B, as shown. Each segment of the truss structure is assumed to have no mass and infinite stiffness.
a = 2 m, F1 = 6 kN, F2 = 13 kN, F3 = 13 kN
Calculate the force in A and B in y-direction in kN. Enter the higher value. Round to one decimal.
(answer can be positiv or negativ but only negativ answers will be accepted)

4. Coco, the three-legged cat with a mass of 3.5 kg, is standing still on a horizontal frictionless surface. While playing with a ball of yarn, having a mass of 0.05 kg, Coco kicks it backwards with one of her three legs so hard that the ball of yarn reaches a speed of 2.3 m/s.
The resulting speed of Coco is:

5. Which of the following statements regarding the rules are correct (2024)?
Mark all correct answers.

6. In which cases will team members be denied their on-site member pass?
Mark all correct answers!

7.

The figure shows internal single walls of the TSAC and their cutouts.
Which of these walls are rules compliant? Mark all correct answers.

8.

The figure shows a simplified quarter vehicle modal. The drive torque T(M) is the input, the wheel speed W is the output of the system. The torque due to the acceleration of the vehicle is modelled by the constant disturbance d. I models the inertia of the wheel and s is the complex variable of the Laplace transform.

Which statements are correct? Mark all correct answers.

9. The TS of an EV can be simplified to be
an ideal TS energy storage and
an unshielded TS cable running through free air.

The ideal TS energy storage consists of the following parts:
an ideal voltage source V0 supplying 600 V DC at any load
an ideal resistor Ri of 28.5 mΩ which combines all resistances in the high current path of the TS energy storage, such as the cell, contact, busbar, wiring, fuse, and outlet connector resistances
an ideal circuit-breaker as the main fuse having an appropriate DC voltage rating and a characteristic such that the instantaneous tripping current is 10 times the rated current

The TS cable has the following properties:
the cross-section A is 2×6 mm2
the length l is 10 m
the specific conductivity κ is 56 m/(Ω*mm2)
a 30 % increase in the wire’s resistance covers the thermal behavior and all other effects during a short-circuit event
Select the rated current In and breaking capability Icn of the TS energy storage circuit-breaker, such that
a short circuit event at any point of the TS wire triggers instantaneous tripping
a short circuit event at any point of the TS wire can be interrupted
the maximum possible rated current is chosen, although the value might be well above the typical continuous current rating of the cable
available values for the rated current In have a step of 10 A (e.g. 10 A, 20 A, 30 A)
the minimum possible breaking capability is chosen
available values of the breaking capability Icn have a step of 10 kA (e.g. 40 kA, 50 kA, 60 kA)
Give the rated current In in A and the breaking capability Icn in kA in the following format: In, Icn e.g. 123, 456

10. In the following there are multiple statements abount the rules. Which statements are correct?

1. In the following there are multiple statements abount the rules. Which statements are correct?

2. Mark all true statements according to the FS Rules

3. According to the FS Rules and the competition handbook: Which statements are true?

4. In which cases will team members be denied their on-site member pass?
Mark all correct answers!

1. The following processes have to be measured by the AMS. (Multiple choice)

2. You want to drive with a Lithium Polymer Cell with 3.2 Ah and weighing 70 g. Which of the following configurations would be allowed by the rules? Hint: Unorm = 3.7 V, Umax = 4.2 V

3. 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)

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

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. Which of the following statements regarding the Brake System is false?

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

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

9. Which of the following statements is false regarding the difference between Lead-based batteries, Nickel-based batteries and Lithium-based batteries?

10. Which of the following requirements of the brake light assembly must be met to be rules compliant? (multiple choice)

1. The given gearbox consists of two gear sets with wheels 1, 2 and 3, 4 respectively. The wheels are fixed to their shafts. Calculate the drive speed (in rpm) of wheel 4?

Given: n1=600 rpm, z1=18, z2=90, z3=24, z4=120

2. A vehicle with the mass 190kg, wheelbase 1,56m and tyre static radius 222mm is weighed. Scales measure 83kg (front) and 107kg (rear) when the car measured on the perfectly flat ground and the same values when the front axle is elevated by 0,85m. What is the car’s COG height? Give answer to the nearest whole number in mm

3. If the density of aluminium is 2.71 kg/m^3, find the volume of a 0.888 kg of aluminium. Give answer in m^3 with two decimal places.

4. 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

5. 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.

6. You would like to drink a cup of very hot coffee with milk early in the morning, but you
are in a hurry and have only 5 minutes until you have to leave for work. At which time
after brewing should you add the cold milk to the coffee and stir in order to decrease the
temperature of the mixture as much as possible:
a) 0 minutes (immediately),
b) 2 minutes, or
c) 4 minutes?
Suppose that the stirring can be done instantaneously and that you need the last one
minute for drinking.

brew temperature C = 80 ◦C, temperature of milk = M = 10 ◦C, room temperature
0 = 20 ◦C, volume of coffee VC = 300 ml, volume of milk VM = 100 ml, specific heat
capacity of coffee cC = 4180 J/(kgK), specific heat capacity of milk cM = 3500 J/(kgK).

Please enter only the letter of the corresponding answer

7. The previous season you could recuperate only 25% of your initially stored energy, but this season a big improvement in your drivetrain allows you to recuperate 63% of the initially stored energy.  Knowing that you had 9.6 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 to one decimal place.

8. Calculate the force Fc working at point C.

Rax = 4kN, Ray = 10 kN

Rbx =5 kN, Rby = 8 kN

9. An object is fired vertically upwards from the ground at time t = 0 s in still air at a speed of 8.0 m/s. On the way up, what is the height of the object above the ground when it has a speed of 2.0 m/s. At what time does it reach this height on the way down? Give both answers separated by a comma to one decimal place.

10. A 30 lbs model helicopter flying at 51 mph, calculate its kinetic energy. Answer in J to 3 significant figures.