Engineering Challenge Quiz
Poutanes
Poustides
1.Teh car's exhauts is made of steel. The color at the end of the exhaust is dark blue. What might be the temperature of the exhaust gases?
280 Celsius
310 Celsius
340 Celsius
370 Celsius
2.The mass of gear A is 20kg and its centroidal radius of gyration is 150mm. The mass of gear B is 10kg and its centroidal radius of gyration is 100mm. Calcuate the angular acceleration of gear B when a torque 12N*m is applied to the shaft of gear A. Neglect friction.
19.1 rad/sec^2
20.1 rad/sec^2
25.5 rad/sec^2
28.2 rad/sec^2
3.Which requirement, concerning the lap belt, is true?
If the lap belt passes through a firewall, the edges must be sealed by a grommet and it has to be protected against chafing
If not welded to a steel chassis, the attachment must support a load of 13kN (given that this mounting point is used only for the lap belt)
The belt must be 75mm wide, except with the use of a HANS device
4. Calculate Vo.
-125 mV
-75 mV
75 mV
125 mV
5.Which of the following about chassis structure is correct?
If the portion of the air intake system that is 0.42 yards above the ground it must be shielded with a structure of at least three steel tubes(with a wall thickness of 0.045 inches)
Any document about structure must be in ‘IGES’ file format with a maximum capacity of 62 MB.
If threaded fasteners are used for Roll Hoop Bracing attachment, the team can use bolts as long as a minimum of four full threads must project from any lock nut.
If sleeve joints are used for Roll Hoop Bracing attachment, sleeve can have a length of 21mm on one side of the joint and 19mm on the other. Also the wall thickness of the sleeve can be 0.008 feets.
None of the above
6.We have Team A,B and C.Team A uploaded VSV before initial deadline expires but received a ‘fail’. After that Team A uploaded the correct version of VSV 62 hours from the point of notification. Team B uploaded VSV 262800 seconds after the initial deadline but received a ‘fail’. After that Team B uploaded the correct version of VSV 19860 minutes from the point of notification. Team C did exactly the same with Team B with the difference that the VSV received a ‘fail’ again.What’s the correct answer?
Penalty of 10 points for Team A, penalty of 76 points for Team B, de-registration for Team C
Penalty of 0 points for Team A, penalty of 71 points for Team B, de-registration for Team C
Penalty of 0 points for Team A, penalty of 64 points for Team B, penalty of 76 points for Team C
Penalty of 10 points for Team A, penalty of 71 points for Team B, penalty of 71 points for Team B
None of the above
7.The sports car is traveling along a 30 bankedroad having a radius of curvature of r = 500 ft. If thecoefficient of static friction between the tires and the road isms = 0.2, determine the maximum safe speed so no slippingoccurs. Neglect the size of the car.
119 ft/s
125 ft/s
136 ft/s
185 ft/s
8.You have a 3-gallon jug, a 5-gallon jug, and an unlimited supply of water. How many are the minimum steps to get exactly 4 gallons of water without estimating? (Σαν step θεωρουμε καθε φορα που προσθετουμε η αφαιρουμε νερο, αν χυσεις δλδ νερο απο ενα μπουκαλι στο αλλο ειναι 2 steps).
7
8
9
10
9.The stress versus strain behaviors for fiber and matrix phases are represented schematically in the following Figure. Wich of the curves depicts the behavior of the composite material?
Red
Green
Blue
10.You have Team A and Team B. Team A took the maximum points in all static events. Team B from static events gained the 80% of Team's A points. Team B took the maximum points from acceleration and skidpad dynamic events. Team A didn't participate on acceleration and on skidpad they gained 32.5 points. Best corrected time for Team A on autocross was 62 seconds(best of all) and for Team B was 71 seconds. Elapsed time for Team A on Endurance was 20 minutes and 32 seconds and for Team B 19 minutes and 7 seconds. Team A hitted 4 cones and Team B none. Team's B corrected time was the best time on endurance. Team B spent extra 30 seconds on driver change area. Team A spent in total 3 Liters of gasoline fuel when Team B spent 8 Liters of gasoline fuel. Team A got 30 points on Efficiency and Team B got 3.7 points. (gasoline fuel density=0.7). There was not any other penalty for the Team A and B. What's the total points of each Team?
A)Team A=758 ,Team B=751.5
B)Team A=751.5 ,Team B=758
C)Team A=657 ,Team B=651
D)Team A=651 ,Team B=657
11.At wich temperature does pure iron changes its crystal structure from BCC structure to FCC?
912 Celsius
963 Celsius
1674 Fahrenheit
1689 Fahrenheit
65
75
95
All of them
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