Quiz Preparation – UMD Racing e.V.

Quiz „Basics“

1 / 10

1. What is true about the Cones & Markings for Autonomous Running?

a. The cones must have a minimum distance of 5 meters

b. The cones and markings must be also visible at night

c. Details of the cones used and more detailed track layout figures can be found in the Event Handbook

2 / 10

2. How many events may a driver drive during a competition?

a. three

b. As many as they like

c. one

d. two

See FSG Rules 2023 D1.1.2

3 / 10

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

a. 60

b. 58

c. 64

4 / 10

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

a. GBP (British Pound)

b. In the team’s national currency

c. EUR (Euro)

d. USD (US Dollar)

See FSG Rules 2023 S2.6.4

5 / 10

5. What is BOM short for?

a. Bill of Material

b. Beginning of Mission

c. Basics of Mechanics

6 / 10

6. 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

7 / 10

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

a. 50 %

b. 30 %

c. 40 %

d. 25 %

See FSG Rules 2023 S2.10.1

8 / 10

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

a. Only the team member who developed the business plan

b. Any team member introduced at the beginning

c. Only the presenting team member

9 / 10

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

a. 2

b. 4

c. Isn’t mentioned in the rules

d. 1

See FSG Rules 2023 T2.6.2

10 / 10

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

a. 3 mins

b. 2 mins

c. 5 mins

d. as long as the team requires

See FSG Rules 2023 D7.5.4

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 65%

Quiz „Intermediate“

1 / 20

1. 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 29 points but the topic of your team’s BPP didn’t meet the requirements defined in the rules. What is your Business Plan Presentation Score? Round to one decimal place

See FSG Rules 2023 S1.4.6 & S1.4.2

2 / 20

2. Your team recieves 14.7 points for their autocross run. The fastest time overall was 69.1 secs. How long was your team’s fastest run? Round to one decimal place.

See FSG Rules 2023 D6.3.2 & D9.1.7

3 / 20

3. Your team recieves 23.9 points for their autocross run. The fastest time overall was 82.3 secs. How long was your team’s fastest run? Round to one decimal place.

See FSG Rules 2023 D6.3.2 & D9.1.7

4 / 20

4. What is the diameter of the outside skidpad circle?

a. 20 m

b. 15.25 m

c. 21.25 m

d. various between events

See FSG Rules 2023 D4.1.2

5 / 20

5. Your team completes their best manual skidpad run in 6.1 secs. The fastest team overall completed their run in 4.9 secs. How many points did your team recieve for skidpad? Round to one decimal place.

See FSG Rules 2023 D4.4.3

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

a. 4

b. As many as the team wants

c. 6

d. 5

See FSG Rules 2023 D1.1.1

7 / 20

7. Your team completes their best autocross run in 84.0 secs but knocks down five cones. The fastest team overall completed their run in 1 min 13 secs. How many points did your team recieve for autocross? Round to one decimal place.

See FSG Rules 2023 D6.3.2 & D9.1.7

8 / 20

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

a. There is no lower limit

b. 71

c. 75

d. 70

See FSG Rules 2023 S1.4.7

9 / 20

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

a. 30 secs

b. 2 secs

c. did not finish

d. disqualified

See FSG Rules 2023 D9.1.7

10 / 20

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

a. Missing two gates of a slalom will result in two off-course penalties

b. The officials do not have to be informed if a team wants to change tyres during driver change

c. Missing a gate of a slalom will result in an off-course penalty

d. If the driver fails to obey to a flag waved at him, a minute will be added to the time

e. If the driver runs over debris outside of the track which results in a puncture, the team will be scored as DNF for the endurance

See FSG Rules 2023 D7.6.6 (& D7.6.7, D7.6.8), D9.1.5 & D9.1.12

11 / 20

11. Your team completes their best manual acceleration run in 6.0 secs. The fastest team overall completed their run in 3.9 secs. How many points did your team recieve for acceleration? Round to one decimal place.

See FSG Rules 2023 D5.4.2

Hint: if formula gives a negative answer, then the team only recieve the basic 3.5 points

See FSG Rules 2023. Correct answers:

A5.3.2 -> deadlines
T12.2.3 -> tyre types
T2.61 -> dry tyres
T12.2.2 -> size of uni name
T2.6.2 -> tyre types

12 / 20

12. Which statements are correct? (multiple choice)

a. Teams, that submit the SES 170h after the deadline will be de-registered

b. Submission of the IAD 50h after the deadline will result in a 10 points penalty

c. All tyres on the same axle must have the same manufacturer, size and compound

d. The tyres on the vehicle when it is presented for technical inspection are defined as its "dry tyres"

e. Stroke width and spacing between numbers of the university name must be at least 20 mm

f. Teams, that submit the CRD 50h after the deadline will recieve a 20 points penalty

g. All tyres on the same vehicle must have the same manufacturer and compound

h. All tyres on the same vehicle must have the same manuafcturer, size and compound

i. The university name needs to be placed on a high contrast background

j. Characters on the university name must be at least 50 mm high on both side of the vehicle

k. The tyres on the vehicle when it is presented for technical inspection are defined as its "wet tyres"

l. The university name needs to be either black on a white background or white on a black background

m. The university name needs to be written in Comic-Sans MS

13 / 20

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

a. 120 secs

b. 60 secs

c. 100 secs

d. 45 secs

See FSG Rules 2023 IN9.2.7

14 / 20

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

a. All of the above.

b. Test data must be provided by teams that the vehicle will be decelerated at a rate not exceeding 20 g average and 40 g peak.

c. Test data must be provided that the energy absorbed meets or exceeds 7350 J.

d. Vehicles with aerodynamic devices and/or sensors in front of the front bulkhead must not exceed the peak deceleration for the combination of the IA assembly and the non-crushable object and prove the design does not exceed 120 kN.

See FSG rules 2023: T3.19.1 & T3.19.4

15 / 20

15. The length of the acceleration track is 75m. Hypothetically the acceleration of the cars is constant, and linear, without slip. The vehicle starts from the starting line of the Acceleration track and then covers 75m. At the finish line, the speed of the racing car is 108 km/h.

How much time (in secs) is needed for the car complete the Acceleration Event and what was the acceleration of the car ( in m/s^2)? Give the answers as whole numbers sparated by a comma (?, ?).

Calculate acceleration: v^2= u^2+2as
Calculate time: s=ut+1/2 at^2

16 / 20

16.

The Electrical System Officer must: (Multiple Choice)

a. Be present during driver change

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

c. Present whenever work is performed on the Tractive System

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

e. Not be the team captain

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

g. Be the one driving the accumulator cart

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

17 / 20

17. Your team completes their best manual acceleration run in 5.3 secs. The fastest team overall completed their run in 3.9 secs. How many points did your team recieve for acceleration? Round to one decimal place.

See FSG Rules 2023 D5.4.2

18 / 20

18.

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

a. BOTS

b. TSAL

c. LVMS

d. Inertia Switch

See FSG Rules 2023 EV6.1

19 / 20

19. For the rain test: (Multiple Choice)

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

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

c. All wheels must be removed

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

e. Must be in ready-to-drive mode

f. The vehicle must have passed the accumulator inspection

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

20 / 20

20. What is the minimum height of the university name on both sides of the car?

a. 100 mm

b. 75 mm

c. 50 mm

d. 150 mm

See FSG Rules 2023 T12.2.2

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 58%

Quiz „Electrical“

1 / 10

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

a. The Nickel based batteries typically have the lowest specific energy

b. The Lead based batteries typically have a nominal voltage of 2V

c. The Lithium-based batteries typically have the highest specific energy

d. The Lithium-based batteries can achieve specific energies of over 200 Wh/kg

e. The Nickel based batteries have the lowest nominal voltage

no solution currently

2 / 10

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

a. The TSAC can be protected from rear impact by a square tube with an edge length of and a wall thickness of 1.2 mm

b. All electrical safety items used for working on the accumulator must be rated for 1000 VDC

c. The ESO’s name and phone number can be displayed in characters with a height of 25 mm on the TSAC’s lid

d. If carried out correctly, a three-point bending test is sufficient to prove adequate strength of composite material used for a TSAC if the data and photos are provided in the SES

e. The maximum temperature limit for LiFePo4 cells is 60°C

f. There must be inspection holes in the side wall and the bottom of the TSAC if the wall thickness cannot be determined otherwise

g. NiMH type cells are allowed

h. Accumulator container attachments can be made of 1 mm thick steel

See FSG rules 2023. Correct answers:

EV5.5.5
T 3.2.1, T 3.15, 5.5.2, Asquare tube=90.24 mm²
EV 5.5.14
IN 3.2.2 only for TS voltage

3 / 10

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)

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

4 / 10

4. 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

5 / 10

5. 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

6 / 10

6. 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 measures least 10 cm2 with an even level of brightness

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

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

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

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

See FSG rules 2023: T6.3

7 / 10

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

Q = I * t

8 / 10

8. 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)

9 / 10

9. Which statements about the travel of the driving pedal is correct

a. At least two separate sensors must measure the position of the driving pedal

b. Travel is defined as the angle from resting position to fully applied in degrees

c. Travel is defined as a value from 0 to 1

d. Travel is defined by the Torque needed to actuate the pedal

e. The Power to the motors may not exceed 5kW when pedal is in resting position

f. Travel is defined by the Perimeter at the widest radius

g. Maximum power is being utilized when the driving pedal is fully applied

FSG Rules 2023: T11.8.1, T11.8.5

10 / 10

10. Which of these HV- and LV-components have to be fire-retardant? (Multiple Choice)

a. A dividing element between the main fuse, the AIRs and the rest of the TSAC

b. Every wire used inside of the TSAC

c. A device above the segments to prevent arc flashes

d. Both layers of the fire wall including the material that bonds them together

e. An LV energy storage with a lithium iron phosphate chemistry

f. Spare TSAC

See FSG rules 2023: EV5.3.4, EV5.4.6, EV5.5.12

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 30%

Quiz „General Engineering“

1 / 10

How high (in m) can a column of liquid be lifted by a reciprocating piston, neglecting leakage and losses, if the air pressure is 101300 Pa and the pressure p₁ approaches zero?

Example Input 14.3 (use a point, no unit)

2 / 10

2. Before the endurance you pump nitorgen in your tires at a temperature of 20°C and 0.7 bar relative pressure. Knowing, that during the endurance the maximal tyre temperature will be around 60°C, what will be the maximal relative pressure of the tyre? Give answer in bar to two decimal places.

p2 = p1 * (T2/T1)

3 / 10

3. In a gas pipe, the gas pressure pG is measured using a U-tube manometer connected at the bottom. Above the meniscus of the measuring liquid (mercury with density ρQ) on the gas side, there is a column of water with height h₂ and density ρW.
Question:
What negative pressure △pU (vacuum) exists in the pipe compared to the external pressure p₀?

Result in Pa, two decimal numbers seperated by a point (exp. 15.3). Do not put the Unit in the field below.

4 / 10

4. 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

a. 0 mins

b. 2 mins

c. 4 mins

The driving „force“ for the cooling of the coffee is the temperature difference between the warm coffee and the environment (room temperature), which leads to an exponential drop in coffee temperature. The temperature difference is greatest immediately after brewing. The later we stir in the milk, the lower the coffee temperature has already dropped. On the other hand, lowering the temperature by the milk becomes smaller the longer we wait.
So we let the coffee cool down on its own for as long as possible in order to bring about the temperature reduction by the cold milk at the end. The greatest possible cooling is therefore achieved when the milk is added after 4 minutes.

5 / 10

An air stream

dot{M}_L = 5.5 kg/s,

cp_L=1 kJ/(kgK)

is to be heated in a plate heat exchanger from

θ_L′=20∘C

θ_L′′=150∘C

. For this purpose, a flue gas stream

dot{M}_R = 7.22

cp_R=1.1 kJ/(kgK)

with a temperature of

θ_R′=300∘C

is available. The overall heat transfer coefficient is

W/(m^2*K)

.
What is the required heating surface AAA if the fluid streams are arranged in counterflow?

a. 328,1 m^2

b. 281,7 m^2

c. 314,12 m^2

6 / 10

A cantilever is subjected to forces

. Determine the bar force

F_{S 8}

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

a. 2.85F

b. 7.27F

c. -6F

7 / 10

7. 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 = 300 km/h, μF = 0.15, g = 9.81 m/s2.
Give your answer in meters, rounded to four significant places.

Ekin = 0.5*m*v^2
W = Fr*s = μ*m*g*s
Kinetic energy of the car is completely converted by friction into heat and deformation work W. -> Ekin = W
s= v^2/2*μ*g

8 / 10

8. 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

draw all forces working on car and create balanced equation.
Fb‘ * L*cosθ – Fg * |AC| = 0 (rotated around point at A)
|AC| = |AB| + |BC| = (h – r) * sinθ + a * cosθ
a = L * (Fb/Fg)
Final formula: h = (Fb‘- Fb)/Fg × L × cot(θ) + r

Fb‘ = m*g (at rear axle while front tyres are lifted)

Fb = m*g (at rear axle while car standing on ground)

Fg = m*g (at COG)

L = wheel base

sin(θ) = H/L

r= radius of tyre

9 / 10

9. Calculate the gravitational potential energy of a 4 kg object at 15 m above Earth’s surface with gravitational field strength of 9.81 N/kg. Give answer to three significant figures in J.

E = m * g * h

10 / 10

10. Frage

a. Yes

b. Nein

c. Depends on y

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 0%