Quiz Preparation

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

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

3. What is DNF short for?

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

5. What is the resulting time of a SkidPad run?

6. 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?

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

8. 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)

9. What penalty is given for a doo in Skidpad?

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

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

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

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

4.

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

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

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

7.

The Electrical System Officer must: (Multiple Choice)

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

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

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

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

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

13. 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

14. 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.

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

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

17.

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

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

19.

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

20. 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?

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

2. 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

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

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

5. 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.

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

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

8. 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

9. Which statements about the travel of the driving pedal is correct

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)

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. 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.

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

4.

5.

6. The given gearbox consists of two gear sets with wheels 1, 2 and 3, 4 respectively. The wheels are fixed to their shafts. Calculate the drive speed (in rpm) of wheel 4?

Given: n1=600 rpm, z1=18, z2=90, z3=24, z4=120

7. A hall with a floor area of 500 m² is to be equipped with underfloor heating, which will be operated at an average temperature of 33°C.

What percentage of the floor area must be used as heating surface in order to ensure an indoor temperature of 18°C when the outside temperature is -15°C?

Result in m^2 as an integer

8. Using an indicator, the cylinder pressure can be plotted as a curve over the piston stroke. The curve recorded for the compression stroke of an internal combustion engine can be approximated by the relationship p⋅V^n=const..
What is the amount of work done by the volume change if the following values are given?

given: V_1=10^-3 m^3; p_1=0.1 MPa; p_2=3 MPa; n=1.3

Round to one decimal number seperated by a point. Input in Joul without writing the unit in the field below (example: 152.9).

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