Quiz Preparation – UMD Racing e.V.

Quiz „Basics“

1 / 10

1. How many cones do you need to build the skidpad track

a. 64

b. 60

c. 58

2 / 10

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

a. 150 mm

b. 50 mm

c. 200 mm

d. 250 mm

See FSG Rules 2023 T12.2.2 and T12.1.2

3 / 10

3. How long is water sprayed on the car during the rain test?

a. 45 secs

b. 60 secs

c. 100 secs

d. 120 secs

See FSG Rules 2023 IN9.2.7

4 / 10

4. What is the minimum height of the characters of the car number?

a. 200 mm

b. Large enough to read it from 20 m distance

c. 150 mm

d. 100 mm

See FSG Rules 2023 T12.1.2

5 / 10

5. Situation during the Endurance: A driver spins with the car and is driving in reverse to get back on track. What is wrong in this situation?

a. The car is not allowed to drive in reverse.

b. When a driver spins the car, it will get a DNF

c. The Marshals have to get the car back on track

6 / 10

6. Which of the following certifications for helmets is not allowed?

a. SFI 31.1/2015

b. FIA 8860-2010

c. FIA 8861-2018

d. Snell SA2020

7 / 10

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

a. 25 %

b. 50 %

c. 30 %

d. 40 %

See FSG Rules 2023 S2.10.1

8 / 10

8. An EV team without driverless components have 9 parts of scrutineering to pass before being allowed to compete on track.

a. False

b. True

See FSG Rules 2023 IN1.1.1

9 / 10

9. An official has the right to remove the scrutineering sticker from the car, if the car is no longer rule compliant.

a. True

b. False

10 / 10

10. During the BPP, who is allowed to answer questions from the judges?

a. Only the presenting team member

b. Only the team member who developed the business plan

c. Any team member introduced at the beginning

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 64%

Quiz „Intermediate“

1 / 20

The Electrical System Officer must: (Multiple Choice)

a. Present whenever work is performed on the Tractive System

b. Be present during driver change

c. Be one of the members pushing the car with the push bar

d. Be the one driving the accumulator cart

e. Attend a separate ESO meeting on the first day of the competition

f. Not be the team captain

g. Switch off the Tractive System Master Switch during driver change

See FSG Rules 2023 A6.10.2, D7.5.2 & D7.5.6

2 / 20

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

a. 2 secs

b. 30 secs

c. disqualified

d. did not finish

See FSG Rules 2023 D9.1.7

3 / 20

3. 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.

See FSG Rules 2026 D5.4.2

4 / 20

4. Which statement about the Ready-To-Drive sound is correct?

a. The maximum duration is one secound

b. The used sound must be easily recognisable

c. It can be similar to the road noise, but must be louder

d. Animal voices, except goat voices, are forbidden

See FSG Rules 2023 E4.12

5 / 20

5. What is the maximum length of time allowed for the driver change in endurance, in order to recieve no penatly?

a. 3 mins

b. as long as the team requires

c. 5 mins

d. 2 mins

See FSG Rules 2023 D7.5.4

6 / 20

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

a. 25 mm

b. 35 mm

c. not defined in rules

d. 30 mm

See FSG Rules 2023 T2.2.1

7 / 20

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

a. 4

b. Isn’t mentioned in the rules

c. 1

d. 2

See FSG Rules 2023 T2.6.2

8 / 20

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

a. The driver must pull into the driver change area for discussion with the officials

b. The driver must be prepared to overtake a slower car on the racing line

c. The track is slippery. The driver must be prepared for evasive maneuvers to avoid the situation

d. The driver must pull into the driver change area for a mechanical inspection of the vehicle

See FSG Rules 2023 D2.1.10

9 / 20

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

a. BOTS

b. Inertia Switch

c. TSAL

d. LVMS

See FSG Rules 2023 EV6.1

10 / 20

10.

The Electrical System Officer must: (Multiple Choice)

a. Not be part of the static events

b. Be present during driver change

c. Accompany the vehicle whenever it is moved around on the competition side

d. Be contactable by phone from the officials between 8 am and 8 pm during the event

e. be replaced by the ASR if the vehicle has autonomous features and only one ESO is at the event

f. Not be the team captain

g. Not enter the dynamic area

h. Be the driver if there is another ESO on the team

i. Be the driver

See FSG Rules 2023 A4.3.6, IN9.2.2 (& A4.3.3, A6.7.2), D7.5.2 & A4.4.2

11 / 20

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

a. 5

b. As many as the team wants

c. 6

d. 4

See FSG Rules 2023 D1.1.1

12 / 20

12. What is the maximum amount of points a EV team can recieve at an event?

a. 800

b. 600

c. 1000

d. Is different at each competition

See FSG Rules 2023 A1.2.5

13 / 20

13. Your team reiceves 59.3 points for their autocross run. The fastest time overall was 71.9 secs. How long was your team’s fastest run? Round to one decimal place.

See FSG Rules 2023 D6.3.2 & D9.1.7

14 / 20

14. 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.

See FSG Rules 2023 D5.4.2

15 / 20

15. What is the area of the cockpit opening template (including the area allowed for the steering) in square inches rounded to one decimal place?

See FSG rules 2023: T4.2.1

Area: 282500mm -> convert to inch ^2

16 / 20

16.

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

a. Cockpit Shutdown Button

b. RES

c. AIRs

d. BOTS

See FSG Rules 2023 EV 6.1

17 / 20

17. For the rain test: (Multiple Choice)

a. The vehicle will be sprayed for 2 mins at first and again for an additional 2 mins if the officials decide so

b. All wheels must be removed

c. The water spray can be in front and behind the car

d. The vehicle must have passed the accumulator inspection

e. Components may be used to protect the vehicle from water during rain test

f. Must be in ready-to-drive mode

See FSG Rules 2023 IN9.2.6, IN9.1.1 (& IN4.1.2) & IN9.2.1

18 / 20

18. How many points are assigned for the Overall Vehicle Concept in the Engineering Design Event? (Multiple choice)

a. 20

b. 35

c. 35 %

d. 13.3 %

See FSG Rules 2023 S3.7.2

Steps:

calculate average time between left circle and right circle for each run
add any penalties to these times
decide on the best time of Team A and Team B
slowest time between these two best times is T_team
fastest time between these two best times gets multipled by 1.25 and is T_max
use formula from FSG Rules 2023 D4.4.3

19 / 20

19.

Assuming the skid pad event has only two participants, both EV without driverless. Team A and Team B: calculate the score rounded to two decimals for the team scoring the lower amount of points using the following data. (FS 2025 Rules)

20 / 20

20. Each team must have two 0.8kg fire extinguishers.

a. True

b. False

See FSG Rules 2022 T13.4.1

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 57%

Quiz „Electrical“

1 / 10

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

a. The brake over travel-switch must be of the type single pole, single throw switch

b. The first 90 % of the brake pedal travel may be used to regenerate brake energy without actuating the hydraulic brake system. The remaining brake pedal travel must directly actuate the hydraulic brake system, but brake energy regeneration must not remain active

c. The brake pedal and its mounting must be designed to withstand a force of 2kN without any failure of the brake system

d. Unarmored plastic brake lines are prohibited

See FSG rules 2023: T6.1.10

2 / 10

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

a. The brake light must be a red light on a black surface

b. The brake light must be illuminated when driving into the driver change area

c. The shape of the break light can be a square or a circle

d. The brake light must be functioning even if HV- or LV-power supply failed or is being disconnected

e. The brake light measures least 10 cm2 with an even level of brightness

f. Clearly visible from the back at bright sunlight with a viewing angle of at least 30°

See FSG rules 2023: T6.3

3 / 10

3. 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

W = 0.5 * C * U^2

∆W = W_end – W_start = 0.5 * C ((U_end)^2 – (U_start)^2)

4 / 10

4. 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)

series connection: L = 0.5 H + (L1*L2)/(L1 + L2) = 0.7 H
sub-in and rearrange to Solve for L2: (2L2)^2/(3L2) = 0.2 H
sub-in L2 to find L1

5 / 10

5. A thin circular, isolated wire made of copper with radius R lies on a table with its ends
connected to a Volt meter. Another, straight wire lies exactly along a diameter of the
circular wire, connected to an alternate current source i(t) = I0 sin(wt).
The experimental setup is shown in the following Figure:

Which effective voltage Ueff does the Volt meter display?
R = 10 cm, maximum current I0 = 1 A, f = 50 Hz.
Give your answer in Volts with three decimal places

The magnetic field lines H around the straight, current-carrying wire run in concentric circles, with their centres lying on the wire axis. The field lines thus enter the wire perpendicularly in one half of the circle and leave it perpendicularly in the opposite half. This means that one semicircle of the induction loop is penetrated by the time-varying magnetic flux (t), while the opposite semicircle is penetrated by exactly the opposite flux -(t) for reasons of symmetry. The total flux at any time is zero at all times, which means that no induction voltage and thus no effective voltage Ueff is indicated at any time. The specification of the data in the task was therefore completely superfluous.

6 / 10

6. 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

40% SoC -> 3.7V and 1.6 mΩ and 80% SoC -> 3.8V and 1.2 mΩ, total open-circuit voltage

71*3.7 + 71*3.8 = 532.5V

Total impedance = 71 * (1.6m/2) + 71*(1.2m/2) = 99.4mΩ

V*I = I^2*R * 80kW

I = 155 A

7 / 10

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

a. A sensor input is shorted to Ground

b. Software parameters are set wrong

c. The springs from the driving pedal are torn in two

d. The AMS signals a power of over 5kW and triggers the BSPD

e. Sensors are out of range

8 / 10

8. 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.

Circuit’s current: MOSFET will operate in linear zone, close to the activation voltage. Therefore, as VGSth is 4V, VS can be taken as 8V. From these 8V and the 47R current limiting resistor, the discharge current of the circuit will be 8/47->0,17A
As the constant current discharge of a capacitor depends on capacity, as V=i·t/C->
t=V·C/i=(565-60)·0,0012/0,17=3,56s

9 / 10

9. 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

a. 6 compartments in series with 4p28s configurations

b. 4 compartments in series with 4p32s configurations

c. 5 compartments in series with 4p22s configurations

d. 4 compartments in series with 6p26s configurations

10 / 10

10. 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

E_new = E_old * (1+0.27)/(1+0.69)

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 30%

Quiz „General Engineering“

1 / 10

1. Calculate the Normal force on the rear left tyre during the first skidpad lap. You can assume, that your vehicle is in a steady-state condition and that there is no longitudinal acceleration. Further it can be assumed, that all 4 wheels have a lateral grip coefficient of 1.4. You can use the centerline radius stated in the rules. Following information regarding the vehicle are given. Give answer to nearest whole number in Newtons.

m = 220 kg

Cl = 3.8

A = 1 m^2

Rho = 1.1 kg/m^3

Wheelbase: L = 1.53

Trackwidth:t = 1.2 m

Height of CG: h = 0.2 m

Weight distribution/COP: 50%

(m*g + 0.5*rho*A*Cl*v^2)*μ = m * (v^2)/R
Calculate max corning speed:
Calculate lateral acceleration: a = v^2/R
Create equation of forces acting on the vehicle to find normal force on rear left tyre:
F= 0.25*m*g + 0.25*0.5*rho*A*Cl*v^2 – 0.5*m*a*h/t

2 / 10

2. 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.

P = E/t = W/t

3 / 10

3. A helicopter of mass 4200 kg is carrying a crate using a light extensible rope. The crate has a total mass of 800 kg, including its contents. The helicopter and crate are accelerating upwards at 2.0 ms^-2. What is the tension in the rope? Use gravititational field strength g is 9,81 N/kg. Air resistance can be ignored. Give answer to nearest whole number in Newtons

Tension = net force -> Tension = m*a (of system) + m*g (of system)

4 / 10

4. Frage

a. Nein

b. Depends on y

c. Yes

5 / 10

A cantilever is subjected to forces

. Determine the bar force

F_{S 8}

Given F1=F4=F, F2=F3=2F, a

a. 7.27F

b. 2.85F

c. -6F

6 / 10

A metal piece heated to

θ_1,M=1000∘C

with a mass of

M_M=6.5 kg

was cooled in a completely heat-insulated iron container filled with water. The mass of the water in the container is

M_W=10 kg

and the mass of the container is

M_B=2 kg.

The initial temperatures of the water and the container were the same and amounted to

θ_1,W=10∘C

. After complete thermal equilibrium between the immersed metal piece, the water, and the container, a temperature of

was established.
What is the average specific heat capacity of the metal piece

c

in the temperature range between

and

Input the result in kJ/(kg*K), round to 3 decimal numbers sperated by a point (example: 0.136).

7 / 10

7. 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.

Possible solution:

use this formula to calculate the required height: „v^2 = u^2 + 2as“ -> 3.1m
use same formula again to calculate the maximum height the object reaches -> 3.3m
then use this formula to calculate the time the object takes to reach maximum: „v=u + at“ -> 0.8s
calculate the time taken for the object to fall from the maximum height to 3.1m (first answer): „s =2at^2“-> 0.2s
add together the two calculated times -> 1.0s

8 / 10

8. A team is in the process of validating the compliance of the shoulder harness bar used in their car. Choose the part in which their configuration is incompliant:

a. The bar is bent (not straight) and the team uses an analysis method of inducing 7kN to each attachment in the horizontal plane to prove compliance

b. From the driver’s shoulders rearwards to the mounting point or structural guide, the shoulder harness is 8° above the horizontal

c. The steel tube has a thickness of 2 mm, and a 0.26% in carbon and 1.7% manganese content

d. The attachments are positioned 220 mm apart, measured center to center, and have a thickness of 1.7 mm

See FSG rules 2023 T3.2

9 / 10

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

10 / 10

10. The Wet Skid Pad World Record was set at FSN2019 by TU Delft. They managed to set a time of 4.901 for the left circle and a time of 5.031 for the right circle. Assume the run was completed perfectly along the center line of the circles. What was their average speed during this record run? Give answer to two decimal places in mph.

Runtime (Rule D4.4.1) = (4.901+5.031)/2
Distance (Rule D4.1.2) = 18.25 * π
Speed = d/t

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 0%