FS East Registration Quiz 2024

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Questions: 15

Duration: 1h 15m
15 without duration

Class: dv

Status: complete

Date: 26th January 2024

Infomation: -

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Documents

FS-Rules_2024_v1.1
FSEast-Competition-Handbook-2024-0.3

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ID: 783

Question: 1

What is the average power dissipated during an avalanche on a MOFSET that is used in switching mode in a series R L circuit where L = 10 µH, R = 50 Ω and the switching frequency is 25 kHz? The input voltage is 24 V and the Avalanche current is 0.5 A.

2.5 µJ

31.25 mW

1.25 mW

6.25 µJ

ID: 784

Question: 2

One of your critical parts just broke. You can either repair it or buy a new one. A new one costs 1000 EUR, repair would cost 800 EUR. You have a pending sponsorship that depends on you keeping to your schedule and your decision on buy or repair. If you buy a new part and you keep to the schedule, you receive 1200 EUR. If you keep to the schedule with repairing the broken part, you receive 1500 EUR. If you can’t keep to the schedule, you receive 800 EUR independent of your decision. The pro bability of keeping to the schedule with a new part is 90%. It is only 20% if you decide to repair the current part. You optimize for maximal Expected Monetary Value (EMV).
Pick the optimal choice with maximal EMV.

Buy a new part. EMV = 200 EUR

Buy a new part. EMV = 160 EUR

Repair the broken part. EMV = 140 EUR

Repair the broken part. EMV = 700 EUR.

ID: 785

Question: 3

Calculate drag with the following parameters.
Frontal surface area: 0.7 m^2
Drag coefficient: 1.6
Velocity: 50 km/h
Air density: 1.22 kg/m^3

121.79 N

0.1318 kN

1.317 kN

1.708 kN

ID: 786

Question: 4

Which of the following are NOT Engineering Design Event scoring categories at FS East 2024?
There can be multiple correct answers, mark all of them.

Overall Vehicle Concept

Team

Chassis

Electronics

Performance Engineering

Vehicle Testing

ID: 795

Question: 5

What is the maximum rules compliant breaking distance measured from the point where EBS was triggered in case of a failure within the ABS, given the vehicle is travelling with the minimum speed required for EBS test? The track conditions are dry.

14.568 m

12.345 m

8.395 m

6.173 m

ID: 787

Question: 6

A vehicle completes a 1100 m course in 60 seconds. The energy consumption during this lap is 1 MJ. What is the average traction force of this vehicle during the run?

1 kN

880 N

909 N

786 N

ID: 788

Question: 7

Find X.
a = Maximum points awarded for Cost

160

100

ID: 790

Question: 8

What is the resistance of this resistor?

100 Ω 5%

100 kΩ ± 5%

10 kΩ ± 5%

1 kΩ ± 5%

ID: 797

Question: 9

Select the true statement.

Function coverage always implies statement coverage.

Modified condition/decision coverage always implies Multiple Condition Coverage.

Branch coverage always implies Modified condition/decision coverage.

Multiple Condition Coverage always implies branch coverage.

ID: 792

Question: 10

George, the bunny of FS East wants to drive on the ceiling. To obtain his greatest wish he dreamed of last week, he wants to use one of his team’s previous FS car s with some modifications. This vehicle has a mass of 180 kg, 2 35 m 2 frontal area, a downforce coefficient of 3.5 and a drag coefficient of 0.8. He fits tires with a friction coefficient of 1.8 (assume cylindrical friction ellipses) and a rolling resistance coefficient of 0.1. For the gravitational acceleration, assume the value that can be measured at the Hungaroring (ca. Budapest) rounded to 2 decimals . On the day of driving, George sees that the temperatures reach room temperature values according to ISO 13443 natural gas reference conditions. As he steps on the scale to measure his own weight, he also sees, that the poppy seed rolls from Christmas are still measurable in his belly and he still weighs 15 kg. At least how much speed does he need to maintain wh ile driving on the ceiling when the stated circumstances occur? Assume just he main forces acting on George and his vehicle (a point mass may be equivalent) in an equilibrium state to determine the minimum needed speed in a moment of bottom up driving. Mark the answer rounded to the integer value of the minimal speed needed.

44 mph

20 m/s

75 km/h

1 km/min

ID: 793

Question: 11

Mark the correct statement from below.

The increase of slip does not affect the lateral force the tire can generate on the contact patch.

Cornering on the edge of the friction ellipse with constant speed on a constant circular flat track with a front wheel driven car, the car is understeered if more throttle is applied, because on the edge of the friction ellipse one can only generate more longitudinal force on the contact patch with the decreasing of lateral forces.

Single track model behaviour can be described with variables of steer angle, longitudinal speed, cornering stiffness etc., and constants mass, inertia and CoG position.

A 4-wheeled car touches the ground on 4 points along a corner, until the acting line of the overall resultant force projected to the centre of mass pierces the ground surface within the geometrical shape of the vertical projection of the outer suspension p ickup points on the ground.

ID: 794

Question: 12

Your team uses a 200 gsm UD carbon composite material called “East”. You have the opportunity to switch to another 200 gsm UD material called “Easter” with the same matrix. Knowing only the following material properties, is it worth it to use Easter ins tead of East if you want to achieve higher stiffness?

Yes, Easter has higher stiffness.

No, East has higher stiffness.

They have the same stiffness.

There is not enough data to answer the question.

ID: 798

Question: 13

Your car just crossed the acceleration event’s finish line in autonomous mode at FS East 2024 and set a time of 3.987 seconds with no cones hit. It stopped with the activation of the EBS and just over half a minute later the ASSIs turned into continuous blue. There are 4 other teams with the following corrected times set: 3.876, 4.045, 4.134, 3.912 seconds. How many points would your team score if the event ended wight after your run?

90.824

70.824

65.528

65.3

ID: 799

Question: 14

What is the Almanac in a GPS frame?

Clock and health data of the transmitting satellite

Orbital information of the transmitting satellite

Clock and health data for every satellite

Orbital information for every satellite

ID: 800

Question: 15

Assume the neural network shown in the picture with two inputs, two outputs, two hidden neurons and two biases. The parameters are:
i1 = 0.05, i2 = 0.1
w1 = 0.15, w2 = 0.2, w3 = 0.25, w4 = 0.3, w5 = 0.35, w6 = 0.4, w7 = 0.45, w8 = 0.5
b1 = 0.3 , b2 = 0.6
What are the outputs of this neural network if the standard logistic function is used as activation function?

o1 = 0.751, o2 = 0.773

o1 = 0.773, o2 = 0.751

o1 = 0.738, o2 = 0.760

o1 = 0.760, o2 = 0.738