Quiz Preparation – UMD Racing e.V.

Quiz „Basics“

1 / 10

How many events may a driver drive during a competition?

a. one

b. three

c. two

d. As many as they like

See FSG Rules 2023 D1.1.2

2 / 10

What is BSPD short for?

a. Beer Supply Performance Distinction

b. Brake System Plausibility Device

c. Brake System Plausability Design

3 / 10

How many sets of dry tyres are allowed to be used in the manual dynamic disciplines during one event?

a. One set excluding the practice area and brake test

b. As many as the team wants

c. One set including the practice area and brake test

d. One set per discipline

See FSG Rules 2023 D3.2.4

4 / 10

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

a. Brake System

b. Steering System

c. Aerodynamics

d. Electrical

See FSG Rules 2023 S2.4.4

5 / 10

What is DNF short for?

a. Do Not Follow

b. Did Not Finish

c. Do Not Flip

6 / 10

How many points are assigned for the BOM discussion in the Cost and Manufacturing Event?

a. 50.0

b. 10

c. 115

d. 60.75

See FSG Rules 2023 S2.10.1

7 / 10

What is AMS short for?

a. Autonomous Models Summary

b. Alternative Manufacturing Solution

c. Accumulator Management System

8 / 10

Which of the following statements about the dynamic disciplines is correct?

a. The vehicle must be able to start and restart without external assistance

b. Push starts are allowed

c. Drivers may leave the vehicle during the run

d. Burnouts are allowed

9 / 10

Which of these is/are not a penalty during autocross? (Multiple choice)

a. did not finish

b. 5 secs

c. 2 secs

d. 0.2 secs

See FSG Rules 2023 D9.1.7

10 / 10

Can a team be eliminated from the Engineering Design Event by the judges, if every document of theirs was accepted and they are present at the Engineering Design Event?

a. Yes, if the team did not pass any scrutineering prior

b. No, if a team is present at the event, the judges are obligated to evaluate their performance

c. Yes, if the judges consider the number of the team members present at the discussion insufficient

d. Yes, if the judges consider the vehicle to be in unfinished state

See FSG Rules 2023 S3.5.1

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 64%

Quiz „Intermediate“

1 / 20

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

a. 150 mm

b. 50 mm

c. 250 mm

d. 200 mm

See FSG Rules 2023 T12.2.2 and T12.1.2

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

2 / 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. (FS2025 Rules)

3 / 20

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

a. 8

b. Depends on the run time

c. 10

d. 13

See FSG Rules 2023 D6.3.1

4 / 20

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.

See FSG Rules 2023 D5.4.2

5 / 20

What is the minimum allowed ground clearance, excluding driver?

a. 25 mm

b. 30 mm

c. not defined in rules

d. 35 mm

See FSG Rules 2023 T2.2.1

See FSG Rules 2023 A5.3.1

6 / 20

A team missed the intial deadline for a document and submitted this 24 hours after the deadline. After that the team’s document got accepted. The team will recieve a 10 point penalty.

a. False

b. True

See FSG Rules 2023 A1.2.7

7 / 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

8 / 20

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

a. True

b. False

See FSG Rules 2023 IN7.1.3

9 / 20

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

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

b. The used sound must be easily recognisable

c. The maximum duration is one secound

d. Animal voices, except goat voices, are forbidden

See FSG Rules 2023 E4.12

installation cost: 400.000 EUR
machine cost: 20.000 EUR x 5 years = 100.000 EUR
material cost: 50 EUR x 1200 cars = 60.000 EUR
Total cost: 560.000 EUR
Cost per car: 560.000 EUR /1200 = 560 EUR

10 / 20

To build your race car you need a part what can be bought on the public market for 450 EUR per piece. Your plan is to sell 1200 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 20.000 EUR per year for the machine operator. The material costs are 50 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

installation cost: 400.000 EUR
machine cost: 20.000 EUR x 5 years = 100.000 EUR
material cost: 70 EUR x 950 cars = 66.500 EUR
Total cost: 566.500 EUR
Cost per car: 566.500 EUR /950 = 596 EUR

11 / 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 950 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 20.000 EUR per year for the machine operator. The material costs are 70 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

12 / 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

13 / 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

14 / 20

The Electrical System Officer must: (Multiple Choice)

a. Be present during driver change

b. Present whenever work is performed on the Tractive System

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

d. Be the one driving the accumulator cart

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

f. Be a valid team member

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

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

15 / 20

What is the penatly for driving off course during acceleration?

a. disqualified

b. 2 secs

c. did not finish

d. 30 secs

See FSG Rules 2023 D9.1.7

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

16 / 20

17 / 20

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

a. 15.25 m

b. 16.25 m

c. 20.25 m

d. 21.25 m

See FSG Rules 2023 D4.1.2

18 / 20

The Electrical System Officer must: (Multiple Choice)

a. Not be the team captain

b. Be the one driving the accumulator cart

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

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

e. Present whenever work is performed on the Tractive System

f. Be present during driver change

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

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

19 / 20

What is the length of the acceleration track?

a. 100 m

b. 50 m

c. 60 m

d. 75 m

See FSG Rules 2023 D5.1.1

20 / 20

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

a. 20 mm

b. 24 mm

c. 22 mm

d. 26 mm

See FSG Rules 2023 11.4.4

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 57%

Quiz „Electrical“

1 / 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

2 / 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)

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

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

a. Only Verilog

b. Only VHDL

c. Both

d. Neither of these

5 / 10

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

a. TS current when the LVS is active

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

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

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

e. Cell temperatures of 30% most thermally critical cells

f. All cell voltages that are SCS

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

6 / 10

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

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

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

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

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

See FSG rules 2023: T6.3

7 / 10

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

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

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

c. 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

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

e. NiMH type cells are allowed

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

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

h. 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

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

8 / 10

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

a. 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

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

See FSG rules 2023: T6.1.10

9 / 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

10 / 10

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

a. They must include overcurrent protection that rips at or below the maximum specified discharge current of the cells

b. They must be in a rigid and sturdy casing

c. They must be enclosed in a non-conductive, waterproof and acid resistant container

d. They must be protected from short circuits, not more than 100 mm from ungrounded terminals

See FSG rules 2023 T11.7.7

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 30%

Quiz „General Engineering“

1 / 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

2 / 10

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

3 / 10

Frage

a. Yes

b. Nein

c. Depends on y

4 / 10

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. 4 mins

b. 2 mins

c. 0 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

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

6 / 10

A water tank under a pressure of p = 117.72 kPa has three pipes connected to it, which are sealed 5 meters below the water surface by three plates with areas A₁, A₂, and A₃.
Task:
Sort the pressures p₁, p₂, and p₃ according to their magnitude.

a. p2=p1>p3

b. p1>p2>p3

c. p2>p1>p3

d. p2>p3>p1

e. p1=p2=p3

7 / 10

in m, to decimal numbers seperated by a point (example: 150.00), no unit requirment for the solution

8 / 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. 328,1 m^2

c. 314,12 m^2

9 / 10

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)

10 / 10

Using an indicator, the cylinder pressure can be plotted as a curve over the piston stroke. The curve recorded for the compression stroke of an internal combustion engine can be approximated by the relationship p⋅V^n=const..
What is the amount of work done by the volume change if the following values are given?

given: V_1=10^-3 m^3; p_1=0.1 MPa; p_2=3 MPa; n=1.3

Round to one decimal number seperated by a point. Input in Joul without writing the unit in the field below (example: 152.9).

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 0%