Quiz Preparation

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

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

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

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

5. What is the length of the acceleration track?

6. 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)

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

8.

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

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

10.

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

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 is the minimum allowed ground clearance, excluding driver?

3. For the rain test: (Multiple Choice)

4. What are not the diameter of the skidpad circles? (Multiple choice)

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

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

7. 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

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

9. Your team completes their best manual acceleration run in 6.0 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.

10.

The Electrical System Officer must: (Multiple Choice)

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

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

13. How many percentage of points is the Demonstration and Structure in the Business Plan Presentation Event?

14. 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.

15.

The Electrical System Officer must: (Multiple Choice)

16.

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

17. 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?

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

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

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

1. 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.

2. A horizontal pipe increases from cross-section 1 with A1 = 2.55 cm2 to cross-section 2 with A2 = 7.1 cm2. In cross-section 1 there is a pressure of p1 = 1.2 bar and a flow rate of v1 = 5 m/s. The density of water is 997 kg/m3.
Calculate the pressure in bar in cross-section 2 for the flowing water. Round to two decimals.

3. Given is a parallel-plate capacitor with area A, separated by a uniform gap of thickness d1 filled with a dielectric with permittivity ε. At time t1, the voltage of the capacitor is V1. The capacitor is not connected to any electrical network.
How much energy is needed to change the plate spacing to d2 = 4 × d1?

4. Your vehicle has its right-hand base coordinate frame defined with the x-axis pointing forward into the driving direction and the z-axis upwards.
A camera is positioned on the vehicle as follows, in the vehicle coordinate frame:
x = 500 mm, y = 160 mm, z = 1140 mm
and the Euler angles ZY′X′′
roll = 100°, pitch = 0°, yaw = 90°
Assume the camera has no distortion, a resolution of 1280 px × 1080 px, and the principal point (cx and cy) and the focal lengths (fx and fy) are given by:
cx = 636 px, cy = 548 px, fx = 241 px, fy = 238 px
The point (u, v)0 is defined to be (u, v)0 = (-cx, -cy) as commonly used.
Within the camera image plane, z-axis in viewing direction, an object center is detected at pixel:
u = 795 px, v = 467 px
Another sensor determines the euclidian distance of the object to the camera frame as:
d = 2.7 m
Calculate the 3D position of the object in the vehicle coordinate frame in meter. Round to three decimals. Give the solution in the following format: x, y, z, e.g. 1.234, 5.678, 9.012

5. 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

6. 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:

7. Fred, the racing alpaca, has made a New Year’s resolution to lose weight to improve his time in Acceleration. Assume that the traction force remains the same, is constant over the entire Acceleration, and that drag or other resistances can be neglected.
How much weight must he lose at least to improve his time by 13 %? Answer in % and round to the nearest one.

8. 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.
a = 2 m, F1 = 6 kN, F2 = 13 kN, F3 = 13 kN
Calculate the force in A and B in y-direction in kN. Enter the higher value. Round to one decimal.
(answer can be positiv or negativ but only negativ answers will be accepted)

9. For the shown drive train, the input rotational speed is 3600 min-1, and the number of teeth of the sprocket is z1 = 20.
ease note: n2 = n3, n4 = n5, n6 = n7.
The number of teeth of the sprockets are:
z1 = 20, z2 = 45, z3 = 24, z4 = 55, z5 = 30, z6 = 43, z7 = 15, z8 = 53
Calculate the rotational speed in min^-1 for the final sprocket z8 where the driveshafts are mounted. Round to one decimal.

10. 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.

1. 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

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

3. 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.

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

5. 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

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

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

8. 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.

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

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

1. 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)

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

3. 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.

4. A refrigeration unit cools water of mass 3 kg by 33 °C. Find the thermal energy removed from the water. The specific heat capacity of water is 4186 J/kg celsius. Give answer to three significant figures in kJ.

5. The Wet Skid Pad World Record was set at FSN2019 by TU Delft. They managed to set a time of 4.901 for the left circle and a time of 5.031 for the right circle. Assume the run was completed perfectly along the center line of the circles. What was their average speed during this record run? Give answer to two decimal places in mph.

6. A lorry contains an engine with a power of 2.78 J/s. The lorry drives for 36 mins. Calculate the energy transferred in kJ rounded to three decimal places.

7. 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

8. Calculate the Normal force on the rear left tyre during the first skidpad lap. You can assume, that your vehicle is in a steady-state condition and that there is no longitudinal acceleration. Further it can be assumed, that all 4 wheels have a lateral grip coefficient of 1.4. You can use the centerline radius stated in the rules. Following information regarding the vehicle are given. Give answer to nearest whole number in Newtons.

m = 220 kg

Cl = 3.8

A = 1 m^2

Rho = 1.1 kg/m^3

Wheelbase: L = 1.53

Trackwidth:t = 1.2 m

Height of CG: h = 0.2 m

Weight distribution/COP: 50%

9. 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.

10. 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

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

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

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!