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Quiz Preparation

8

Quiz „Basics“

1 / 10

1. What is the minimum number of points a team recieves for finishing an acceleration run?

2 / 10

2. For the Cost and Manufacturing discipline, which statement is correct regarding „bought parts“?

3 / 10

3. How many points are assigned for the Overall Vehicle Concept in the Engineering Design Event? (Multiple choice)

4 / 10

4. What penalty is given for a doo in Skidpad?

5 / 10

5. What is the minimum score for the third place in the Business Plan finals (with three finalists)?

6 / 10

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

7 / 10

7. What does a black flag mean?

8 / 10

8. An official has the right to remove the scrutineering sticker from the car, if the car is no longer rule compliant.

9 / 10

9. What happens if a driver completes more than two runs in a discipline?

10 / 10

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

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Quiz „Electrical“

1 / 10

1. How much current flows when 99 C passes down a wire in 11 s? Give answer in amps as a whole number.

2 / 10

2. 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

3 / 10

3. 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

4 / 10

4. You want to drive with a Lithium Polymer Cell with 3.2 Ah and weighing 70 g. Which of the following configurations would be allowed by the rules? Hint: Unorm = 3.7 V, Umax = 4.2 V

5 / 10

5. 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.

6 / 10

6. 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.

7 / 10

7. Which of the following statements is false regarding the difference between Lead-based batteries, Nickel-based batteries and Lithium-based batteries?

8 / 10

8. Which of the following requirements of the brake light assembly must be met to be rules compliant? (multiple choice)

9 / 10

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

10 / 10

10. Which of the following statements about LV battery packs with lithium based chemistry other than LiFePo4 is not true?

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Quiz „General Engineering“

1 / 10

1. Calculate the gravitational potential energy of a 4 kg object at 15 m above Earth’s surface with gravitational field strength of 9.81 N/kg. Give answer to three significant figures in J.

2 / 10

2.

How high (in m) can a column of liquid be lifted by a reciprocating piston, neglecting leakage and losses, if the air pressure is 101300 Pa and the pressure p₁ approaches zero?

Example Input 14.3 (use a point, no unit)

Strömungslehre Aufgabensammulung

3 / 10

3. in m, to decimal numbers seperated by a point (example: 150.00), no unit requirment for the solution

4 / 10

4. The magnitude of the manifold reaction force FK is to be determined. In Newton, integer, no unit in the answer

5 / 10

5. A spring in a car’s suspension has elastic potential energy store 226 J. If the spring constant is 8.1N/mm, find the extension. Give answer in meters to three significant figures.

6 / 10

6. In a gas pipe, the gas pressure pG is measured using a U-tube manometer connected at the bottom. Above the meniscus of the measuring liquid (mercury with density ρQ) on the gas side, there is a column of water with height h₂ and density ρW.
Question:
What negative pressure △pU (vacuum) exists in the pipe compared to the external pressure p₀?

Result in Pa, two decimal numbers seperated by a point (exp. 15.3). Do not put the Unit in the field below.

7 / 10

7. For a horizontally positioned, non-insulated steam pipe with a length of l=3 m and a diameter of d_a=0.1 the convective heat loss Q_point is to be calculated. The temperature of the surrounding air is θ_f=30∘C and that of the outer wall surface is θ_w=170∘C.

Input the result in kW and round to two decimal numbers seperated by a point without thr unit (example: 145.35)

8 / 10

8.

An air stream dot{M}_L = 5.5  kg/s, cp_L=1 kJ/(kgK) is to be heated in a plate heat exchanger from θ_L′=20∘C ′ to θ_L′′=150∘C. For this purpose, a flue gas stream dot{M}_R = 7.22, cp_R=1.1 kJ/(kgK) with a temperature of θ_R′=300∘C is available. The overall heat transfer coefficient is k=15 W/(m^2*K).
What is the required heating surface AAA if the fluid streams are arranged in counterflow?

9 / 10

9. How much current flows when 99 C passes down a wire in 11 s? Give answer in amps as a whole number.

10 / 10

10. 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.

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