Formula Student Test CZ 30/1/2021
Formula Student Challenge Quiz
Test your knowledge in the exciting world of Formula Student with our challenging quiz! Featuring 12 questions that cover various aspects of electric vehicles, engineering principles, and competition regulations, it’s a perfect way to gauge your understanding.
- Engaging multiple-choice questions
- Focus on engineering and motorsports
- Great for students and enthusiasts alike!
An electric race car wants to compete in a Drag race. Its mass is 300kg, its power is limited to 135 KW and the distance it must cover is 200m. Considering that there are no losses, what is the fastest time it can accomplish? The vehicle starts the race from a standing position. Give your answer in seconds, rounded to the first decimal.
5.3
3.8
4.6
4.8
A vehicle with a mass of 1 tn has reached its top speed of 180 km/h. It is equipped with 2 electric motors that produce 40 KW each. The frontal area of the car is 2 m2. If the loses of the powertrain are 2% and the rolling resistance coefficient (Crr) of the tires is 0.015 , how much power must be produced by the motors, for the vehicle to move with a speed of 144km/h while carrying 3 passengers ( 75kg each )? Consider that there is no wind, the coefficient of drag is constant, the density of the air is 1,19 kg/m3 and the acceleration of gravity is 9,81m/s2. Give your answer in KW rounded to the first decimal.
44.9
38.4
37.8
43.2
An artificial canal in the Rhine river near Hockenheim, Germany has a discharge of 250000 lt s and a cross section of 54 m2 and supplies a run-of-the-river hydroelectric power plant. If the plant uses 3 turbines which have each a propeller with an effective area of 7 m2 which the water stream hits and the power plant’s efficiency from the turbine onwards is 82%, calculate the output power of the plant in kJ/s . Round up to the closest integer. The density of water is 1000 kg/m^3. There are no pressure changes in the water, nor any friction forces in the system.
934
860
854
922
Choose the correct statements:
A vehicle can have 5 AIRs.
The head restraint and its mounting must withstand a force of 980N applied in the rearward direction at any point on its surface.
The brake pedal can’t be fabricated from anodized aluminum.
No power device (e.g. fan) may be used to move or remove air from under the vehicle.
You decide to do a test run with a new driver. After you signal the driver to start the run, the car sits idle for 3 seconds, then accelarates for 5 seconds at 4m/s^2, then continues at that velocity for 5 seconds. What is the displacement of the car?
50
100
150
200
During a post event inspection the officials weigh the car and it is 3.8 kg heavier compared to the official technical inspection weight. How many points will the penalty for the team be?
20
30
0
10
What flag will be shown in case there is oil on the track?
Yellow flag
Red Flag
Black Flag with orange dot
Red and yellow striped flag
A free-piston linear generator consists of two opposite pistons that drive a small magnet through a 500-turn coil with a radius of 10cm that acts as the stator. If the Magnetic Flux Density of the moving part of the generator is given as B(r,t) = 45 ∗ r ∗ cos(t) where r is the distance from the generator axis, calculate the RMS value of the EMF that is induced on the coil that surrounds the magnets. Give the answer in Volts. Round up to the first decimal. The device depicted is for reference only.
40.4
24.5
33.3
39.8
2 gears (A,B) are connected as shown in the picture below. The mass of the two gears is m A= 5 kg and mB = 20 kg, their radius is RA = 10 cm and RB = 20 cm and there radius of gyration is respectively ra = 8 cm and rb = 20 cm. If the system starts rotating at t=0 via an electric motor with a 2 Nm constant torque, which is exerted on gear A, how long will it be until the gear B reaches 3000 rpm? Give your answer in seconds rounded to the first decimal. Igear = M r^2.
83.5
72.9
65.4
80.6
As body of mass m is connected with two tethers to a rotating vertical axis. If R = 20mm and θ = π/6, find the minimum constant angular velocity (S.I) in order for the horizontal tether to remain stretched. Round to the first decimal.
15.7
16.8
17.3
14.9
Which of the following sentences are true?
A pitot tube is used to measure pressure.
A body gets deformed if a force is applied to it.
If all processes in an isolated system are irreversible, the total entropy is constant.
Optical fibers are not immune to electromagnetic interference.
If a 2500cc 4 stroke diesel engine produces 90 Nm of torque per round and a 1500cc 2 stroke engine produces 75 Nm of torque. What is the ratio of the first engine's brake mean effective pressure to that of the second?
1.44
1.3
0.94
0.8
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