Quiz Preparation – UMD Racing e.V.

Quiz „Basics“

1 / 10

1. How many manual dynamic events can one team compete in during a competition?

a. 5

b. 3

c. 6

d. 4

See FSG Rules 2023 D1.1.3

2 / 10

2. What is DNF short for?

a. Did Not Finish

b. Do Not Follow

c. Do Not Flip

3 / 10

What is the minimum number of drivers allowed for each team at an event?

a. 2

b. 3

c. 4

d. 1

4 / 10

4. What is the minimum allowed static ground clearance, including driver?

a. 20 mm

b. 35 mm

c. 30 mm

d. 25 mm

See FSG Rules 2023 T2.2.1

5 / 10

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

a. 20 m

b. various between events

c. 21.25 m

d. 15.25 m

See FSG Rules 2023 D4.1.2

6 / 10

6. What is BSPD short for?

a. Beer Supply Performance Distinction

b. Brake System Plausibility Device

c. Brake System Plausability Design

7 / 10

7. 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

8 / 10

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

a. as long as the team requires

b. 5 mins

c. 2 mins

d. 3 mins

See FSG Rules 2023 D7.5.4

9 / 10

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

a. 2 with an additional Autonomous System Responsible

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

c. 2

d. 4

e. As many as they like

f. 3

See FSG Rules 2023 A4.3.1

10 / 10

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

a. 150 mm

b. 100 mm

c. Large enough to read it from 20 m distance

d. 200 mm

See FSG Rules 2023 T12.1.2

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 64%

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 65 points. Your team received 61 points but your team missed their timeslot for BPP. What is your Business Plan Presentation Score? Round to one decimal place

See FSG Rules 2023 S1.4.6 & S1.2.5

2 / 20

2. 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 judges consider the vehicle to be in unfinished state

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

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

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

See FSG Rules 2023 S3.5.1

3 / 20

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

a. 20.25 m

b. 16.25 m

c. 15.25 m

d. 21.25 m

See FSG Rules 2023 D4.1.2

4 / 20

4. 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)

a. Detachable key/handle of the tractive system master switch must be removed

b. Autonomes System must be deactivated

c. A registered driver wearing the required driver equipment as defined in T 13.3 including helmet, arm restraints and balaclava having full control of steering and braking

d. Vehicles must be pushed at a normal walking pace by means of a red pushbar

e. Two team members walking on either side of the vehicle

See FSG Rules 2023 A.6.7

5 / 20

5. 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

6 / 20

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

a. The driver must immediate stop on track in a safe and controlled way

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 slow down, something has happened on track. No overtaking unless directed by track marshals

See FSG Rules 2023 D2.1.9

7 / 20

7. 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

8 / 20

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

a. 24 mm

b. 26 mm

c. 22 mm

d. 20 mm

See FSG Rules 2023 11.4.4

9 / 20

9. Your team completes their best autocross run in 71.2 secs. The fastest team overall completed their run in 71 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

10 / 20

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?

a. Harness attachments must use 10mm metric grade 8.8 bolts at minimum

b. Lap and anti-submarine belts can be attached further than 100mm apart

c. The strength of all attachment points must be proven by physical testing

d. Each attachment must support a load of 19.5 kN

See FSG rules 2023: T4.5.3

11 / 20

11. 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

12 / 20

12. What does a black flag mean?

a. driver must immediately pull over on track

b. session has been completed

c. driver must stop in driver change area for a mechanical inspection

d. driver must stop in the driver change area for a discussion with an official

See FSG Rules 2023 D2.1.3

See FSG Rules 2023 S1.4.7

13 / 20

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

14 / 20

14. What is the total surface area of percy (including connection pieces)? Persume the connection pieces have a width of 20mm. Give answer in miles to one decimal place

See FSG rules 2023:

dimensions: T4.3.4 Figure 14

15 / 20

15. 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

16 / 20

16. What is the penatly for hitting over a cone during skidpad?

a. 10 secs

b. 0.2 secs

c. disqualified

d. 2 secs

See FSG Rules 2023 D9.1.7

17 / 20

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

a. 4

b. 6

c. 5

d. As many as the team wants

See FSG Rules 2023 D1.1.1

See FSG Rules 2023 A1.2.7

18 / 20

18. 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

19 / 20

19. How far is the car tipped during the tilt test?

a. 45°

b. 30°

c. 60°

d. 50°

See FSG Rules 2023 IN7.1.3

20 / 20

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

a. 2.5

b. Depends on the run time

c. 0

d. 3.5

See FSG Rules 2023 D5.4.1 or D5.6.2

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 57%

Quiz „Electrical“

1 / 10

1. 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.

2 / 10

2. 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

3 / 10

3. 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)

4 / 10

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

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

b. All cell voltages that are SCS

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

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

e. TS current when the LVS is active

f. Cell temperatures of 30% most thermally critical cells

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

5 / 10

5. 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)

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. 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

8 / 10

8. 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 Nickel based batteries have the lowest nominal voltage

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

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

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

no solution currently

9 / 10

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

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

b. A sensor input is shorted to Ground

c. Software parameters are set wrong

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

e. Sensors are out of range

10 / 10

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

a. They must be in a rigid and sturdy casing

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

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

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

See FSG rules 2023 T11.7.7

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

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).

3 / 10

3. The kinetic energy of a 8 lbs 4 oz box as it was dropped reaching ground is 10125J. Determine the speed as it lands. Give answer to one decimal place in m/s.

KE = 0.5 * m * v^2

4 / 10

4. Answer in MJ, round to one decimal number (example 45.7), no unit in the answer

5 / 10

5. A refrigeration unit cools water of mass 3 kg by 33 °C. Find the thermal energy removed from the water. The specific heat capacity of water is 4186 J/kg celsius. Give answer to three significant figures in kJ.

density (rho) = m / V

6 / 10

6. 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

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

b. 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

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

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. 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>p3>p1

b. p2=p1>p3

c. p1>p2>p3

d. p2>p1>p3

e. p1=p2=p3

10 / 10

10. Frage

a. Nein

b. Depends on y

c. Yes

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 0%