Quiz Preparation

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

2. Ten pages of text are allowed in the Engineering Design Report

3. Each team must have two 0.8kg fire extinguishers.

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

5.

The following parts are part of the Shutdown Circuit (Multiple choice)

6. Which of the following documents is directly evaluated during Engineering Design Event?

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

8. What is the minimum allowed ground clearance, excluding driver?

9. An EV team without driverless components have 9 parts of scrutineering to pass before being allowed to compete on track.

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

1. 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

2. What does the red flag mean during the driving disciplines?

3. 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.

4. Your team recieves 59.3 points for their autocross run. The fastest time overall was 71.9 secs. How long was your team’s fastest run? Round to one decimal place.

5. Your team completes their best manual acceleration run in 4.2 secs. 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.

6. The team at an event with the highest points in the Buisness Plan Presentation but not reaching the finals has 70 points. Your team received 51 points. What is your Business Plan Presentation Score? Round to one decimal place & don’t forget to use a point instead of comma

7. 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.

8. 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?

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

10.

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.

11. 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

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

13. Your team set the fastest lap time at the Autocross event with a time of 86,3 seconds on your first and only run. However, on the final scoring sheet your team is listed in fifth place with 73,1 out of 100 points, while the new winner of the event has a corrected elapsed time of 87,1 seconds. ​
How many cones did your team knock Down or Out?

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

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

16. Which statements are correct? (multiple choice)

17.

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

18. What is the minimum allowed ground clearance, excluding driver?

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

20. Your team completes their best autocross run in 84.0 secs but knocks down one cone. The fastest team overall completed their run in 75.7 secs but knocked down three cones. How many points did your team recieve for autocross? Round to one decimal place.

1. The truss structure shown in the figure is loaded with the forces F1, F2 and F3. The truss structure is supported in points A and B, as shown. Each segment of the truss structure is assumed to have no mass and infinite stiffness.
Identify the zero-force members in the structure under the given load and indicate them by placing a check mark.
You may select one or more answers.

2. You built a cannon to impress your friends with a basketball trickshot. It has a railgun-style accelerator with a length / of 1 m. Your cannon is tilted upwards by an angle a of 77.25° and is placed as depicted with the lower part in the origin of the coordinate system. The cannonball has a mass m of 0.567 kg. Assume that the capacitors have a total capacity C of 33 mF, that the standard acceleration due to gravity 9, is 980.665 cm/s^2 and that there is no friction and no energy loss.
What voltage do you need to charge the capacitors supplying the railgun to, in order to hit the basket at (4.191 m, 3.05 m). Round to the nearest one.

3. A single-cylinder four-stroke engine with a total displacement of 623.7 cm3 has the following theoretical design: piston stroke s = 52 mm, connecting rod length l = 66 mm, piston diameter d = 38 mm. The ignition timing point is given as Sk = 2.0 mm before TDC.
Calculate the ignition timing point in ° crankshaft before TDC. Round to one decimal.

4. The TS of an EV can be simplified to be
an ideal TS energy storage and
an unshielded TS cable running through free air.

The ideal TS energy storage consists of the following parts:
an ideal voltage source V0 supplying 600 V DC at any load
an ideal resistor Ri of 28.5 mΩ which combines all resistances in the high current path of the TS energy storage, such as the cell, contact, busbar, wiring, fuse, and outlet connector resistances
an ideal circuit-breaker as the main fuse having an appropriate DC voltage rating and a characteristic such that the instantaneous tripping current is 10 times the rated current

The TS cable has the following properties:
the cross-section A is 2×6 mm2
the length l is 10 m
the specific conductivity κ is 56 m/(Ω*mm2)
a 30 % increase in the wire’s resistance covers the thermal behavior and all other effects during a short-circuit event
Select the rated current In and breaking capability Icn of the TS energy storage circuit-breaker, such that
a short circuit event at any point of the TS wire triggers instantaneous tripping
a short circuit event at any point of the TS wire can be interrupted
the maximum possible rated current is chosen, although the value might be well above the typical continuous current rating of the cable
available values for the rated current In have a step of 10 A (e.g. 10 A, 20 A, 30 A)
the minimum possible breaking capability is chosen
available values of the breaking capability Icn have a step of 10 kA (e.g. 40 kA, 50 kA, 60 kA)
Give the rated current In in A and the breaking capability Icn in kA in the following format: In, Icn e.g. 123, 456

5.

The figure shows internal single walls of the TSAC and their cutouts.
Which of these walls are rules compliant? Mark all correct answers.

6.

The figure shows the output voltage Vout versus the input voltage Vin as the transfer function of 74LVC1G34, a non-inverting LVTTL buffer.
The non-inverting LVTTL buffer obeys the following static discipline:

Does the given tranfer curve satisfy the static discipline? Mark all correct answers.

7. According to the FS Rules and the competition handbook: Which statements are true?

8. In the following there are multiple statements abount the rules. Which statements are correct?

9. In which cases will team members be denied their on-site member pass?
Mark all correct answers!

10. Fred, the racing alpaca, challenges Coco, the 3-leged cat, to an acceleration event according to D 5.1.1. Being very confident, Fred gives Coco a head start h of 14 m infront of the start line. Both start the same time t=0 s having an initial speed V0 of 0m/s as shown in the figure. Coco accelerates with 6m/s^2. Assume that both are not limited by speed and have a constant acceleraton over the full acceleration event.

Calculate the minimum acceleration Fred needs to achieve to reach the finish line at the same time as Coco. Round to one decimal.

1. In the following there are multiple statements abount the rules. Which statements are correct?

2. According to the FS Rules and the competition handbook: Which statements are true?

3. Mark all true statements according to the FS Rules

4. In which cases will team members be denied their on-site member pass?
Mark all correct answers!

1. 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.

2. 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

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

4. Which of the following requirements of the brake light assembly must be met to be rules compliant? (multiple choice)

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

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

7. 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

8. 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

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

10. A thin circular, isolated wire made of copper with radius R lies on a table with its ends
connected to a Volt meter. Another, straight wire lies exactly along a diameter of the
circular wire, connected to an alternate current source i(t) = I0 sin(wt).
The experimental setup is shown in the following Figure:

Which effective voltage Ueff does the Volt meter display?
R = 10 cm, maximum current I0 = 1 A, f = 50 Hz.
Give your answer in Volts with three decimal places

1. 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

2. 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.

3. A spring in a church clock has a spring constant of 10 N/m. What is its elastic potential energy store if it is stretched 8 m? Give answer in Joules to three significant figures.

4. A cat of mass 12 kgs ran at 65mph. What is its kinetic energy? Answer in J to the nearest whole number

5. An object is fired vertically upwards from the ground at time t = 0 s in still air at a speed of 8.0 m/s. On the way up, what is the height of the object above the ground when it has a speed of 2.0 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.

6. Your team is the first car at the design event during FSN2022 and it’s quite cold for this time of the year, 12 degrees C. To impress the judges, you decide to make some tea for them. What is the minimum required time to prepare the tea, knowing that you have to boil 4 tea cups of 370ml each and you have an electrical heater with a power of 500W. Give your answer to the nearest whole number in secs.

7. 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.

8. A spring in a car’s suspension has elastic potential energy store 226 J. If the spring constant is 8.1N/mm, find the extension. Give answer in meters to three significant figures.

9. 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.

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.