Quiz Germany

A team decides to use decontamination to cool the accumulator. If the refrigerant liquid is nitrogen and has a γ=7/5 and is inittialy stored in a tank of initial pressure P=100kPa with a volume of 1l. If after the car finishes the race there is 0.5 l in the nitrogen tank left how much work has this decontamination produced? Assume that the tank is decompressed in an adiabatic reversible manner. Round to the nearest one.

A solid sphere, r=0.5m, is left to roll freely on a half circle with R=5m from point A(-5,-5). What will be the dω/dt when the sphere is a point B (5,5.2)? The center of the sphere is located at C(0,5) and the half circle is tangent to the straight x=0. *Round to a tenth

Your race car (1800mm wheelbase) has a weight distribution of 64% rear. When seating a 75kg driver, the center of gravity swifts 144mm forward. What is the weight distribution with driver?

A)44% front

B)49% front

C)58% rear

D)54% rear

Any aerodynamic device must be able to withstand a force of xx N distributed over a minimum surface of yy cm^2 and not deflect more than zz mm in the load carrying direction.

A)225,75,175

B)230,210,20

C)225,200,15

D)200,225,10

What is percy?

A) Two 220 mm circles connected with a 490mm straight line and a 300mm circle connected with a 280 mm straight line to the upper 220mm circle

What cornering forces would be represented if the tilt table was not tilted to 60°, but to 70°?

2.74g

2.76g

2.75g

Which of the following answers is wrong?

A) Every team that finishes at least one Skidpad run without DNF get 3,5 points

B) Every team that finishes at least one Endurance run without DNF get 25 points

C) Every team that finishes at least one Acceleration run without DNF get 3,5 points

D) Every team that finishes at least one Autocross run without DNF get 3,5 points

Α body is hanging from the ceiling with a weightless yarn. During the oscillation of the pendulum without friction, the body writes a circle and the maximum angle that forms the yarn with the vertical is θ. The absolute acceleration at the highest and the lowest point of the body's trajectory is the same.Find the angle θ.*Round to a tenth.

The series circuit of an uncharged Goldcap capacitor with c=22F and a resistor R=20kΩ is connected at the time t=0 to the supply voltage V0 = 86.297V. How long does the charging process of the capacitor take from 7% of the supply voltage to 84% of the supply voltage.

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