Quiz Preparation

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

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

3. What does the yellow and red striped flag mean during Endurance and Autocross Event?

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

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

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

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

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

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

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

1. What does the yellow and red striped flag mean during Endurance and Autocross Event?

2. 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.

3.

Which of the following parts are not part of the Shutdown Circuit? (Multiple choice)

4. What is the area of the cockpit opening template (including the area allowed for the steering) in square inches rounded to one decimal place?

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

6. 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.

7. 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.

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

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

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

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

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

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

14.

The Electrical System Officer must: (Multiple Choice)

15. 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.

16. The team at an event with the highest points in the Buisness Plan Presentation but not reaching the finals has 67 points. Your team received 59 points. What is your Business Plan Presentation Score? Round to one decimal place & don’t forget to use a point instead of comma

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

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

19.

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

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

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

2.

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.

3. Coco, the three-legged cat with a mass of 3.5 kg, is standing still on a horizontal frictionless surface. While playing with a ball of yarn, having a mass of 0.05 kg, Coco kicks it backwards with one of her three legs so hard that the ball of yarn reaches a speed of 2.3 m/s.
The resulting speed of Coco is:

4. Given is the three-dimensional circuit as shown. It consists of three resistors, each 4.7 kOhm, six capacitors, each 470 nF, and three inductors, each 4.7 μH.
Calculate the magnitude of the impedance |z| in kOhm between the input and output marked in red for a sinusoidal voltage of 12V and 50 Hz between the input and output. Round to two decimals.

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

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

7.

The figure shows a simplified quarter vehicle modal. The drive torque T(M) is the input, the wheel speed W is the output of the system. The torque due to the acceleration of the vehicle is modelled by the constant disturbance d. I models the inertia of the wheel and s is the complex variable of the Laplace transform.

Which statements are correct? Mark all correct answers.

8.

The figure shows a block diagram of a dynamic system.
What is the overall transfer function of the system?
Mark the correct answer.

9. 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

10. The sequence x[n]=(-1)^n is obtained by sampling the continuouse-time sinusoidal signal x(t)= cos(w0t) at 1-ms intervals, i.e.,

Determine the three smallest distinct possible values of w0 as a multiple of nx10^3 in the following format: w0 1, w0 2, w0 3, e.g 1, 2, 3

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

2. Mark all true statements according to the FS Rules

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

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

1. 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

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. 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

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

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

6. 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.

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

8. How much current flows when 99 C passes down a wire in 11 s? Give answer in amps as a whole number.

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

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.

1. 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:

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. 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.

4. An air as an ideal gas expands adiabatic from a volume of V1 = 1,00l with its pressure of p1 = 10^5 Pa to 1/10 of its original pressure. What volume V2 (in litres) does the gas reach after it’s expansion? Round to two decimal places

5. Before the endurance you pump nitorgen in your tires at a temperature of 20°C and 0.7 bar relative pressure. Knowing, that during the endurance the maximal tyre temperature will be around 60°C, what will be the maximal relative pressure of the tyre? Give answer in bar to two decimal places.

6. 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.

7. 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.

8. 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.

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

10. 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