Quiz
If a team has a mean of 8s penalty time by knoking down cones in Autocross, which is the probability that this team throws more than 5 cones? (Note: standard deviation=1)
A) almost 0
B) 0.0228
C) 0.0548
D) 0.9452
E) 0.9772
F) 1
If a cubic atomical structure has an atomic packing factor equal to 0’74, which is the measure of the diagonal of a face? (atom radius=0’564nm)
A) 3’19nm
B) 2’26nm
C) 1’60nm
D) 1’30nm
A metal deformed plastically on a tensile test, suffers longitudinally deformations and transversals deformations that are relationated with Poisson coeficient:
A) True
B) False
How many degrees of freedom have the “Bloc” ?
A: 1
B:2
C:3
D:4
E:5
If the two vehicles articulated to O are identical. What is the speed of the Q point?
A: V0
B: V0Cos(theta1)
C: Vo*cos(theta1)*cos(theta2)
D: Vo*cos(theta1)/cos(theta2)
E: Vo*cos(theta2)/cos(theta1)
Which is true?
A: Argument with, but not disobedience to, any official will result in the team being eliminated from the competition.
B: A team which is de-registered from the competition has no chance to apply for a place on the waiting list.
C: For CBOM, there is no maximum cost. Receipts are required for any items.
D: The EDR will be used to sort the teams into appropriate design queues based on the quality of its review
E: None of the above
Having a simplified model of the next in-wheel motor. The stator heats up way fast so we need to calculate a new cool water cooling jacket. Both the cooling and the housing are made of Aluminum alloy 6061 with a thermal conductivity of 165 W/M*K. The convective heat transfer coefficient of water is 4991,1 W/sqm*K. The stator diameter is 85mm, the simplified cooling external diameter is 93mm and the thickness of the housing is 5mm. In order to calculate the amount of water we need between the cooling and the housing, the external wet diameter is required. Stator temperature 85 degrees celsius. External temperature of the housing: 66 degrees celsius. Stator iron losses: 235W Total Peak losses: 2236W L1: 100 mm D1: 85mm D2:93mm D3:? D4:? Stator: Red Cooling: yellow Water Housing:Blue
A:130 mm
B:120 mm
C: 140
D:135 mm
Having calculated the new cooling design we need to know the mass flow of water in order to be able to dissipate 2236W of power being the inlet temperature of 53 degrees celsius and the outlet temperature of 56,56 degrees celsius.
A: 0,18Kg/s
B: 0,15 Kg/s
C: 0,13kg/s
D: 0,14Kg/s
Given: 0011 Which is the result?
A: 111
B: 101
C: 110
D: 100
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