Engineering Insights Quiz

1) A car of 290kg and 1.8 lateral friction coefficient on tires is running in the skidpad event. If the fastest time of the event is 4.8 sec, the maximum points for the team are:

2) Which modification to the car is/are not allowed without rescrutineering?

3) In the International Tolerance Grade System, a pairing of H7/k6 constitues which fit?

4) What is the CoG-height of the sprung mass of a car with the following characteristics : m-CAR=0,268t Z-CoG-Car= 0,24481m m-unsprung-mass=50kg Z-CoG-unsprung= 13,5cm

5) A bracket for the bolted joint of the bodywork is welded on a chassis member that is located between the two hoops. The bolt used is 4mm. What is the minimum distance between the hole outline and the nearest edge of the bracket (asnwer in mm round to 1 decimal)

6) A team has done the following. They intended to violate a rule which did not give them an advantage and the intent was discovered after the endurance event. In this particular event they knocked 3 cones. They also submitted the DSS after 171 h from its original deadline. What is the maximum team score and what is the penalty for the endurance?

8) What type of force does a stress produce?

9) What is the area of the technical inspection sticker that should be left on the upper nose of thevehicle.

10.During brake test your driver can deliver 250 N of force in the brake pedal which has a pedal ratio of 3.34. The master cylinder piston diameter is D=15.875 and in the front are used 4-piston calipers with piston diameter d=25mm and in the rear rotors 2-piston calipers with piston diameter d=25mm.Your front rotor outer radius is 110mm and inner radius 90mm and the rear rotors have inner radius 80mm and outer radius 100mm.The load on the front tyre is Fxf=2100N and on the rear Fxr=800N.With brake bias 50% does your vehicle pass brake test?