Quiz Preparation – UMD Racing e.V.

Quiz „Basics“

1 / 10

What is the minimum number of points a team recieves for finishing an autocross run?

a. 10

b. Depends on the run time

c. 13

d. 8

See FSG Rules 2023 D6.3.1

2 / 10

A team can register up to how many Electrical System Officers?

a. 3

b. 2 with an additional Autonomous System Responsible

c. 2

d. 4 but one of them has to be a driver

e. 4

f. As many as they like

See FSG Rules 2023 A4.3.1

3 / 10

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

a. True

b. False

See FSG Rules 2023 IN7.1.3

4 / 10

What happens if a driver completes more than two runs in a discipline?

a. The run does not count

b. The driver is disqualified

c. There is a time penalty

d. The team is disqualified

5 / 10

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

a. 20 mm

b. 22 mm

c. 26 mm

d. 24 mm

See FSG Rules 2023 11.4.4

6 / 10

What is DNF short for?

a. Did Not Finish

b. Do Not Follow

c. Do Not Flip

7 / 10

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

a. GBP (British Pound)

b. USD (US Dollar)

c. In the team’s national currency

d. EUR (Euro)

See FSG Rules 2023 S2.6.4

8 / 10

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

a. Electrical

b. Brake System

c. Aerodynamics

d. Steering System

See FSG Rules 2023 S2.4.4

9 / 10

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

a. 20.25 m

b. 21.25 m

c. 16.25 m

d. 15.25 m

See FSG Rules 2023 D4.1.2

10 / 10

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

a. TSAL

b. LVMS

c. Inertia Switch

d. BOTS

See FSG Rules 2023 EV6.1

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 64%

Quiz „Intermediate“

1 / 20

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

a. 5 mins

b. as long as the team requires

c. 3 mins

d. 2 mins

See FSG Rules 2023 D7.5.4

2 / 20

The Electrical System Officer must: (Multiple Choice)

a. Meet the qualification of working on HV power systems after DGUV 209-093 2E/3E

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

c. Be a valid team member

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

e. Have attended an event as a non-ESO in the year prior

f. Be present during all scrutineerings

g. Be at least 18 years old

h. Be the driver

See FSG Rules 2023 A4.2.9, A4.3.4 & A4.3.8

See FSG Rules 2023 A1.2.7

3 / 20

As a DV-EV Team not competing in DC, what is your maximum total score of Busniess Plan Presentation, Cost and Manufacturing, Skid Pad, Acceleration and Efficiency together?

See FSG Rules 2023 A1.2.7

4 / 20

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

5 / 20

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

a. 75

b. There is no lower limit

c. 70

d. 71

See FSG Rules 2023 S1.4.7

6 / 20

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

a. Isn’t mentioned in the rules

b. 1

c. 4

d. 2

See FSG Rules 2023 T2.6.2

See FSG Rules 2023 S1.4.7

7 / 20

Suppose that 28 teams particpate in the CV category and your team is one of them, there are 6 Busniess Finalist teams among them. The team with the highest points not reaching the finals has 67 points, your team recieved 59 points. What is your Business Plan Presentation Score? Give answer to one decimal place

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

8 / 20

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)

9 / 20

What is the minimum allowed ground clearance, excluding driver?

a. 30 mm

b. 25 mm

c. not defined in rules

d. 35 mm

See FSG Rules 2023 T2.2.1

10 / 20

What is the minimum number of points a team recieves for finishing an acceleration run?

a. 0

b. Depends on the run time

c. 3.5

d. 2.5

See FSG Rules 2023 D5.4.1 or D5.6.2

11 / 20

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

a. 20 %

b. 10 %

c. 25 %

d. 15 %

See FSG Rules 2023 S1.4.1

12 / 20

Each team must have two 0.8kg fire extinguishers.

a. True

b. False

See FSG Rules 2022 T13.4.1

13 / 20

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.

See FSG Rules 2023 D4.4.3

14 / 20

Your team completes their best autocross run in 84.9 secs and that was the fastest overall time. How many points did your team recieve for autocross? Round to one decimal place.

See FSG Rules 2023 A1.1.3, D6.3.2 & D9.1.7

15 / 20

The team at an event with the highest points in the Buisness Plan Presentation but not reaching the finals has 69 points. Your team received 33 points. What is your Business Plan Presentation Score? Round to one decimal place & don’t forget to use a point instead of comma

See FSG Rules 2023 S1.4.6

16 / 20

The Electrical System Officer must: (Multiple Choice)

a. Be present during driver change

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

c. Be the one driving the accumulator cart

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

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

f. Be a valid team member

g. Present whenever work is performed on the Tractive System

See FSG Rules 2023 A6.10.2, D7.5.2, D7.5.6, A4.3.4 & A4.4.2

17 / 20

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

a. The used sound must be easily recognisable

b. The maximum duration is one secound

c. Animal voices, except goat voices, are forbidden

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

See FSG Rules 2023 E4.12

installation cost: 400.000 EUR
machine cost: 25.000 EUR x 5 years = 125.000 EUR
material cost: 75 EUR x 1300 cars = 97.500 EUR
Total cost: 622.500 EUR
Cost per car: 622.500 EUR /1300 = 479 EUR

18 / 20

To build your race car you need a part what can be bought on the public market for 400 EUR per piece. Your plan is to sell 1300 race cars the next five years. If you will manufacture the part by yourself, you need an investment of 400.000 EUR for the installation. Furthermore, you need to pay 25.000 EUR per year for the machine operator. The material costs are 75 EUR per piece. The machine cannot be sold after the usage. What is the cost of one piece of the own manufactured parts? Give answer as one whole number

19 / 20

What is the minimum number of points a team recieves for finishing an autocross run?

a. 13

b. 8

c. 10

d. Depends on the run time

See FSG Rules 2023 D6.3.1

20 / 20

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.

a. False

b. True

See FSG Rules 2023 A4.3.1

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 57%

Quiz „Electrical“

1 / 10

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

2 / 10

You have an electric car with these specifications:

ten 12V batteries
constant velocity of 80 km/h
flat road (friction 1.2kN -> aerodynamic load included)
load for battery 160 Ah
efficiency of 80% (Motor)

How far can you drive with one load? Give answer to nearest whol number in km.

3 / 10

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

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

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

b. Every wire used inside of the TSAC

c. Spare TSAC

d. A device above the segments to prevent arc flashes

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

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

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

5 / 10

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

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. Sensors are out of range

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

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

7 / 10

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

a. Cell voltages when the charger is connected to the accumulator

b. Cell temperatures of at least 30% of all cells distributed in at least 75% of all segments

c. All cell voltages that are SCS

d. Cell temperatures of 30% most thermally critical cells

e. TS current when the LVS is active

f. TS current but only if it can be displayed during technical inspection

See FSG rules 2023: EV5.8.1, EV5.8.1 & EV5.8.3, EV5.8.10

8 / 10

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

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

b. Unarmored plastic brake lines are prohibited

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

d. 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

See FSG rules 2023: T6.1.10

9 / 10

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

10 / 10

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

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 30%

Quiz „General Engineering“

1 / 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. 281,7 m^2

b. 314,12 m^2

c. 328,1 m^2

2 / 10

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

Calculate gear ratio of gear 1 to gear 2: ratio: no. of teeth gear 1/no. of teeth gear2 -> ratio: z1/z2
Calculate output speed of gear 2: output speed = input speed * gear ratio
Gear 3 turns at same speed as gear 2
Calculate gear ratio of gear 3 to gear 4: ratio:z3/z4
Calculate output speed of gear 4: output speed = input speed * gear ratio = 24

3 / 10

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

4 / 10

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.

density (rho) = m / V

5 / 10

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.

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

6 / 10

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

7 / 10

A lorry contains an engine with a power of 0.255 W. The lorry drives for 51 s. Calculate the energy transferred in Joules and round to one decimal places.

P = E/t = W/t

8 / 10

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

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

c. 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

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

See FSG rules 2023 T3.2

9 / 10

A cantilever is subjected to forces

. Determine the bar force

F_{S 8}

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

a. -6F

b. 2.85F

c. 7.27F

10 / 10

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

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 0%