Quiz Preparation – UMD Racing e.V.

Quiz „Basics“

1 / 10

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

a. 35

b. 35 %

c. 13.3 %

d. 20

See FSG Rules 2023 S3.7.2

2 / 10

What is the penatly for driving off course during acceleration?

a. did not finish

b. 2 secs

c. disqualified

d. 30 secs

See FSG Rules 2023 D9.1.7

3 / 10

What is the length of the acceleration track?

a. 50 m

b. 60 m

c. 100 m

d. 75 m

See FSG Rules 2023 D5.1.1

4 / 10

What is AMS short for?

a. Accumulator Management System

b. Autonomous Models Summary

c. Alternative Manufacturing Solution

5 / 10

What must the Technical Vehicle System Documentation include?

a. A video presentation

b. A written description

c. Three technical drawings showing the vehicle from the front, top, and side

6 / 10

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

a. One set per discipline

b. As many as the team wants

c. One set excluding the practice area and brake test

d. One set including the practice area and brake test

See FSG Rules 2023 D3.2.4

7 / 10

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

a. Push starts are allowed

b. Drivers may leave the vehicle during the run

c. Burnouts are allowed

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

8 / 10

What does a black flag mean?

a. driver must immediately pull over on track

b. session has been completed

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

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

See FSG Rules 2023 D2.1.3

9 / 10

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

a. 1

b. 2

c. Isn’t mentioned in the rules

d. 4

See FSG Rules 2023 T2.6.2

10 / 10

What is BSPD short for?

a. Brake System Plausability Design

b. Beer Supply Performance Distinction

c. Brake System Plausibility Device

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 64%

Quiz „Intermediate“

1 / 20

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

a. 2 secs

b. 0.2 secs

c. 10 secs

d. disqualified

See FSG Rules 2023 D9.1.7

2 / 20

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

a. 10

b. 50.0

c. 115

d. 60.75

See FSG Rules 2023 S2.10.1

3 / 20

What is the minimum tread depth of the rain tires?

a. 2.4 mm

b. 2.1 mm

c. 2.3 mm

d. 2.2 mm

See FSG Rules 2023 T2.6.1

4 / 20

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

a. 71

b. 70

c. There is no lower limit

d. 75

See FSG Rules 2023 S1.4.7

5 / 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

6 / 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

7 / 20

The following items have to be on or attached to the push bar, if you are an EV team. (multiple choice)

a. All ESOQs printed out

b. Two pairs of safety glasses

c. A shutdown button with a minimum diameter of 24 mm

d. An approved fire extinguisher

e. An additional pair of drivers gloves and a spare balaclava

f. Car number with a character height of at least 20 mm

g. A multimeter with test leads rated for 600V CAT III or better

h. Red paint

i. University name written on high contrast background

j. Contact details of the team captain

k. Two pairs of high voltage insulating gloves

l. A spare key for the Tractive System Low Voltage Master Switch

See FSG 2023 Rules T13.1

8 / 20

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

See FSG Rules 2023 A5.3.2

9 / 20

A team missed the intial deadline for a document and submitted this 49 hours after the deadline. After that the team’s document got accepted. The team will recieve a 10 point penalty.

a. False

b. True

10 / 20

What is the minimum amount of ASR needed at the Event when being a DV Team?

a. 1

b. 3

c. 2

See FSG Rules 2023 S1.4.6

See FSG Rules 2023 A1.2.7

11 / 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

12 / 20

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

a. 30 %

b. 40 %

c. 25 %

d. 50 %

See FSG Rules 2023 S2.10.1

13 / 20

What is the volume of the smallest allowed head restraint? Give answer to two decimal places in m^3

See FSG rules 2023:

Minimum dimensions: T5.7.2

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

14 / 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)

15 / 20

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

16 / 20

What does the red flag mean during the driving disciplines?

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

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

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

d. The driver must slow down, something has happened on track. No overtaking unless directed by track marshals

See FSG Rules 2023 D2.1.8

17 / 20

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

a. 3

b. As many as they like

c. 2 with an additional Autonomous System Responsible

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

e. 2

f. 4

See FSG Rules 2023 A4.3.1

18 / 20

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

a. Electrical

b. Brake System

c. Steering System

d. Aerodynamics

See FSG Rules 2023 S2.4.4

19 / 20

How many teams can be registered per university? (Multiple Choice)

a. Only one team no matter the CV or EV

b. Two teams but only if one is CV and one is EV

c. Two teams but only if no member is actively working in both teams at the same time

d. Two teams but they cannot attend the same event at the same time

e. Only one team if there are driverless features on the car

See FSG Rules 2023 A4.1

20 / 20

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

a. 150 mm

b. 75 mm

c. 50 mm

d. 100 mm

See FSG Rules 2023 T12.2.2

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

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

a. Spare TSAC

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

c. Every wire used inside of the TSAC

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. A device above the segments to prevent arc flashes

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

3 / 10

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

a. TS current when the LVS is active

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 but only if it can be displayed during technical inspection

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

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

4 / 10

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. Software parameters are set wrong

c. Sensors are out of range

d. A sensor input is shorted to Ground

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

5 / 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. Neither of these

d. Both

6 / 10

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.

7 / 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

8 / 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

9 / 10

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. 4 compartments in series with 6p26s configurations

b. 6 compartments in series with 4p28s configurations

c. 4 compartments in series with 4p32s configurations

d. 5 compartments in series with 4p22s configurations

10 / 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

Dein Ergebnis ist

Die durchschnittliche Punktzahl beträgt 30%

Quiz „General Engineering“

1 / 10

What temperature would occur at the stagnation point of an aircraft flying at a speed of

V_{1} = 2000 km/h

, assuming that the air behaves as an ideal gas under these conditions? The temperature of the undisturbed air is theta_1 = -30°C.

a. 308,.64°F

b. 254.53°F

c. 177.06°F

2 / 10

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.

3 / 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. 314,12 m^2

c. 281,7 m^2

4 / 10

An object is fired vertically upwards from the ground at time t = 0 s in still air at a speed of 9.6 m/s. On the way up, what is the height of the object above the ground when it has a speed of 1.9 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“ -> 4.513m
use same formula again to calculate the maximum height the object reaches -> 4.697m
then use this formula to calculate the time the object takes to reach maximum: „v=u + at“ -> 0.785s
calculate the time taken for the object to fall from the maximum height to 4.5m (first answer): „s =1/2at^2“-> 0.194s
add together the two calculated times -> 1.0s

5 / 10

Calculate the force Fc working at point C. Give answer in kN rounded to one decimal place.

Forces at point A: Rax = 3kN, Ray = 9kN, Ma = 10kN/m

Moment Equation around point D:

0 = -Fc x 1m – (60kN x 3m) x 4m + Ray x 5.5m – 10kN/m

Fc = -190 510 N

Fc = -190.5 kN

6 / 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)

7 / 10

During last year acceleration a top speed of 100 km/h was reached. Due to big improvements in the new drivetrain, the new vehicle reaches a top speed of 120 km/h. The aerodynamics chief has some worries about the stability of the rear wing bracing due to the higher aerodynamics load. Given the geometry below, by how much % does the bearing force in point A change in comparison to last year? (The aerodynamic package did not change and therefore some values can be assumed for both vehicles). Give answer rounded to one decimal place.

CL=3.8 CD=1.2 A=1 m² rho=1.1 kg/m³ L1=50 mm L2= 100 mm H1= 125 mm H2= 165mm

Create an equation with all forces rotated at point B: Fl*L1 + Fd*H2 + Fa*(L2-L1) = 0
Rearrange for Fa
Calculate force Fa with previous year speed
Calculate force Fa with this years speeed
Calculate the change in force in percentage.

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

See FSG rules 2023 T3.2

9 / 10

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

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%