Quiz „General Engineering“

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1. Calculate the maximum possible cornering speed (in kph) for the following FSAE car when going through a 20 m radius corner.

m = 260kg; cl *A * Rho = -6 kg/m; Tyre coefficient of friction = 1.5; g = 9.81 m/s^2.

The vehicle can be treated as a point mass, driving resistances neglected. Round to 1 decimal

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2. A 30 lbs model helicopter flying at 51 mph, calculate its kinetic energy. Answer in J to 3 significant figures.

KE=0,5 * m * v^2

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3. 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.

E = 0.5 * k * e^2

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4. A racing car rolls to a stop on a horizontal course with an initial speed of v. It deceleratesonly by friction with a rolling resistance of μF, which is supposed to be independent ofthe 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.

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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.

Possible solution:

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6. A ball at a height of 20ft on Earth with a gravitational field strength of 9.81 N/kg, gained 284 J of gravitational potential energy. Calculate the mass of the ball. Give answer to two decimal place in kg.

E = m * g * h

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7. 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

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

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8. A racing car rolls to a stop on a horizontal course with an initial speed of v. It deceleratesonly by friction with a rolling resistance of μF, which is supposed to be independent ofthe 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.

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9. 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

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10. The previous season you could recuperate only 25% of your initially stored energy, but this season a big improvement in your drivetrain allows you to recuperate 63% of the initially stored energy. Knowing that you had 9.6 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 to one decimal place.

E_new = E_old * (1+0.25)/(1+0.63)

Prozentzahl richtiger Antworten:

The average score is 40%

Restart quiz

Quiz „Electrical“

1. 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

2. 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

3. 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.

4. 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)

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

no solution currently

6. 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

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

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

See FSG rules 2023. Correct answers:

9. 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->0,17AAs 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

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

See FSG rules 2023: T6.1.10

The average score is 46%

Quiz „Intermediate“

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1. 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

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2. 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

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

See FSG Rules 2023 T12.2.2 and T12.1.2

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4. Your team completes their best autocross run in 71.9 secs but goes off course once and knocks over two cones. The fastest team overall completed their run in 73.2 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

See FSG Rules 2023 S1.4.7

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

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6. 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

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7.

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

See FSG 2023 Rules T13.1

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8. 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.

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

See FSG Rules 2023 D7.5.4

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

See FSG Rules 2023 D9.1.7

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11. What is the diameter of the inside skidpad circle?

See FSG Rules 2023 D4.1.2

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12. 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

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

See FSG Rules 2023 D6.3.1

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

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

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16. What is the maximum amount of points a EV team can recieve at an event?

See FSG Rules 2023 A1.2.5

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

See FSG Rules 2023 D1.1.3

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18. What is the maximum duration of the Business Plan Presentation?

See FSG Rules 2023 S1.2.1

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

See FSG Rules 2023 D2.1.8

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20. 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.

The average score is 73%

Quiz „Basics“

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

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

See FSG Rules 2023 D1.1.2

3. Which of the following requirements is a must for all types of vehicles, when moving the vehicle on the competition site?

See FSG Rules 2023 A.6.7

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

5. What is the length of the acceleration track?

See FSG Rules 2023 D5.1.1

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

See FSG Rules 2022 T13.4.1

7. How many points are assigned for the pitch video in the Business Plan Presentation Event?

See FSG Rules 2023 S1.4.1

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

See FSG Rules 2023 T2.2.1

9. How many sets of dry tyres are allowed to be used during one event?

See FSG Rules 2023 D3.2.4

10. What does a black flag mean?

See FSG Rules 2023 D2.1.3

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

See FSG Rules 2023 S2.6.4

12. How long is water sprayed on the car during the rain test?

See FSG Rules 2023 IN9.2.7

13. What is the maximum duration of the Business Plan Presentation?

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

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

See FSG Rules 2023 S2.10.1

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

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

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

19. How many pages of text are allowed in the Engineering Design Report? (Multiple choice)

See FSG Rules 2023 S3.2

20.

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

See FSG Rules 2023 EV 6.1

The average score is 91%

You only have 10 mins to answer all 4 questions!

Sorry, times up!

Quiz „FSG Multiple Choice“

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

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

See FSG Rules 2023

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

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4. Mark all true statements according to the FS Rules

The average score is 0%