Quiz1 - Quiz 1 Solutions PDF

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Quiz 1 Solutions...

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NAME%___________________________________________[5%points]% % %

AAE#334,#Fall#2017# Quiz%1% % % % Circle%the%best,&relevant&answer#for%each%question.% % 1. [5%points]%The%lift%force%on%an%airfoil%can%explained%physically%by:% (a) Low%pressures%on%the%upper%surface%near%the%leading%edge% (b) The%momentum%change%resulting%from%the%downward%deflection%of%the%wake% (c) A%net%circulation%around%the%airfoil% (d) All%of%the%above% % 2. [5%points]%The%gradient%𝛻𝑓%of%a%scalar%function%𝑓(𝑥% , 𝑥' , 𝑥( )%is:% (a) A%vector% (b) An%inclined%part%of%a%road%or%railway% (c) A%way%to%characterize%the%maximum%increase%of%the%function% (d) Both%(a)%and%(c)% % 3. [5%points]%The%divergence%𝛻 ⋅ 𝑣%of%a%vector%function%𝑣(𝑥% , 𝑥' , 𝑥( )%is:% (a) A%scalar%that%characterizes%how%much%the%vector%field%spreads%out% (b) A%vector%related%to%outflow%minus%inflow% (c) A%conflict%of%opinions% (d) A%way%to%characterize%rotation% % 4. [5%points]%The%curl%𝛻×𝑣%of%a%vector%function%𝑣(𝑥% , 𝑥' , 𝑥( )%is:% (a) A%vector% (b) A%measure%of%rotation% (c) A%barbell%exercise% (d) Both%(a)%and%(b)% %...