Fse Registration Quiz #8 (Alumni-fragen)

10 Questions | Total Attempts: 42

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Fse Registration Quiz #8 (Alumni-fragen)

Questions and Answers
  • 1. 
    Given is an Lithium battery cell with a capacity of 4.8Ah, a maximum voltage of 4.4V, nominal voltage of 3.7V and minimum voltage of 3.0V. The accumulator is built with these cells in 136s3p configuration and is used to drive an Endurance that takes 24mins. The car re-generates energy during 13% of the lap time with an average total accumulator charging current of 68.3A, 6% of the lap time the accumulator isn’t either charged or discharged. Energy is sourced to the motors for the rest of lap time. Crossing the finish line the accumulator voltage reaches 420V. What is the average power that was brought to the track by the motors during driving? NOTE: Losses don’t have to be taken into account. The average cell voltage during the Endurance is not the nominal cell voltage. Wherever possible, average values may be used and simplifications may be applied. The U(SOC)-curve is considered as linear. The voltage level of all cells is the same (balanced); the total battery voltage is 571.2V at the beginning of the Endurance.
    • A. 

      24.536,39 W

    • B. 

      24.985,46 W

    • C. 

      22.983,02 W

    • D. 

      22.844,22 W

    • E. 

      27.880,38 W

    • F. 

      25.957,60 W

    • G. 

      25.818,80 W

    • H. 

      27.731,31 W

  • 2. 
    Given is a permanent excited synchronous motor with a standard SPM rotor with and a power electronics with a maximum output current of 100Aeff, a maximum sinusoidal output voltage amplitude of 91% and a DC bus voltage of 320V. What is the maximum (mechanical) speed of the motor @15Nm which you are able to reach without any field weakening current?
    • A. 

      10.176 rpm

    • B. 

      17.625 rpm

    • C. 

      10.596 rpm

    • D. 

      11.821 rpm

    • E. 

      11.644 rpm

    • F. 

      8.786 rpm

    • G. 

      0 rpm

    • H. 

      9.046 rpm

    • I. 

      9.354 rpm

  • 3. 
    How long can a straight with wide turns on both ends be at endurance?
    • A. 

      61.0m

    • B. 

      77.0m

    • C. 

      60.0m

    • D. 

      45.0m

    • E. 

      90.0m

  • 4. 
    Which kind of underclothing do the drivers have to wear during the dynamic events?
    • A. 

      Long pants and long sleeve t-shirt certified to SFI 3.3 or FIA 8856-2000

    • B. 

      Fireresistant short pants and t-shirt

    • C. 

      They do not have to. But it is highly recommended.

    • D. 

      Any kind of long, cotton-made underwear.

    • E. 

      Bikini

  • 5. 
    Critical fasteners need to
    • A. 

      Be visible to technical inspectors and team members.

    • B. 

      Be secured with an anti-vibration feature.

    • C. 

      Must have at least 3 full threads visible.

    • D. 

      Need to be marked with paint, to detect loosening early.

    • E. 

      Need to be checked every evening.

    • F. 

      Will be inspected during driver change by the first driver.

  • 6. 
    What is allowed on eventside?
    • A. 

      Walking in front of "wing-cars".

    • B. 

      Drinking responsible, this means not driving a fs car afterwards.

    • C. 

      Grinding in the pits with eye protection only.

    • D. 

      Grinding in the pits with full protection and a sufficient clamping of the part.

    • E. 

      Excessive unloading of trucks over several hours.

    • F. 

      Running

  • 7. 
    During endurance an addional stop
    • A. 

      Will result in DNF, if the driver comes in by himself and not because of meatball-flag (orange dot on black background).

    • B. 

      Is not prohibited to ensure operating ability of the vehicle, if the team members want to check the car.

    • C. 

      An additional stop needs to be announced to the tech scrutineers.

    • D. 

      Is prohibted to change tyres if track conditions are declared wet (former dry).

    • E. 

      Must be carried out within 15 minutes.

  • 8. 
    A car is driving a Skidpad in the middle of the track. The car weights 250kg (incl. Driver) and produces addition 2kN of downforce at a speed of 100kph. The friction-coefficient is 1,4. What minimum time is achievable?
    • A. 

      4,77s

    • B. 

      4,44s

    • C. 

      4,55s

    • D. 

      4,66s

    • E. 

      4,88s

    • F. 

      4,99s

    • G. 

      5,11s

    • H. 

      5,22s

  • 9. 
    Concerning a given vectorfield A, which statement is correct?
    • A. 

      Div(rot(A)) = 0

    • B. 

      Div(grad(A)) = 0

    • C. 

      Rot(div(A)) = 0

    • D. 

      Rot(grad(A)) = 0

    • E. 

      Grad(rot(A)) = 0

    • F. 

      Grad(div(A)) = 0

    • G. 

      None

  • 10. 
    A car with 60kW of power is driving up a slope with 10% incline. It has a cross sectional area of 2 sqm. It's coefficient of drag is 0.38. If the car weighs 195 kilograms and car and track have a coefficient of friction of 0.2, how fast can it go? (25° C)
    • A. 

      154 km/h

    • B. 

      143 km/h

    • C. 

      165 km/h

    • D. 

      132 km/h

    • E. 

      140 km/h

    • F. 

      125 km/h

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