DV004

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 frictioncoefficient is 1,4. What minimum time is achievable?

A ball (mass m) is attached to a wall with a spring (spring constant c). A force F(t) is applied to the ball in the direction away from the spring. Calculate the transferfunction G(s) = X(s)/F(s), asuming x(t) is the lengthening of the spring an there is neither friction nor gravity to be considered.

What is the impedance of a capacitor with a capacity of 50 microFarad, if a sinusoidal voltage signal of 150 Hz is applied to it?

23.738 Ohm

2.374 Ohm

21.221 Ohm

Which of the following tubes can be used as Main Hoop Tubing? (OD, thk)

Regarding the ASSI, which statement is false?

It must have a dark background and a rectangular, triangular or near round shape with a minimum shining surface of 15 cm2

If a single line of LEDs is used, the minimum length is 150 mm.

The lateral ASSI must be located in a region 160 mm below the top of the main hoop and 600 mm above the ground.

The rear ASSI must be located 160 mm below the top of the main hoop and more than 100 mm above the brake light.

At least one ASSI must be visible from any angle, when the Aerodynamic devices are not mounted.

Your car has completed the last run of the autocross. Your times without penalties are 63s for the first run and 55s for the second run. You hit two cones in the first run and at the end of the second run your car did not enter finish state. The fastest team completed the run in 45s hitting 4 cones. Which is your final score?

We have a total nominal voltage battery of 456V that contains a cell of 3.8 nominal voltage and 4,2 maximum voltage. Which will be the response value for the IMD test?

228k

114k

252k

126k

Regarding the EBS, which statement is false?

The EBS release point must be marked by a red arrow of 100 mm length (shaft width of 20 mm) with “EBS release” in white letters on it.

All deactivation points must be in proximity to each other, easily accessible without the need for tools/removing any body parts/excessively bending into the cockpit.

The EBS may be part of the hydraulic brake system.

The EBS must only use passive systems with mechanical energy storage.

The vehicle must be equipped with an EBS, that must be supplied (but not power supplied) by LVMS, ASMS, RES and a relay which is supplied by the SDC.

The use of push-in fittings is prohibited.

What balance bar setting (master cylinder pedal force distribution) is needed to reach the maximum possible braking force without locking ?+ m = 250 kg+ μ Road/tire = 1.3 (constant) + dwheel = 15 inch+ Wheelbase = 1.6m+ CG height = 0.35m+ Static weight distribution = 50% Rear+ identical brake hardware all around (discs, pads, calipers, master cylinders) + completetly stiff car (no dynamic effects)