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For the following set of unbalanced 3-phase current, what is the magnitude of the approximate zero-sequence current?$$I_a=20\angle 40^{\circ}$$$$I_b=18\angle -80^{\circ}$$$$I_a=25\angle 170^{\circ}$$

Which generator reactance is generally the smallest?

For what type of fault, all sequence fault currents are equal?

A balanced 60Hz  Delta connected load has R=5ohms and L=10mH in series per-phase. What is the impedance of the equivalent Wye connected load?

In the following power system, if  we remove rows and columns corresponding to known variables, what is the dimensions of the Jacobian matrix?  PS(2).png

What is the area of a #5 AWG conductor in cmil? 

Which one is not correct about auto-transformers? 

At which of the following HBCUs did the first African-American aviators train for air combat missions during WWII?A) Louisiana Military Institute B) the Tuskegee InstituteC) Howard UniversityD) Spellman College  

Which of the following was the Supreme Court decision that declared segregation illegal in U.S. public schools in 1954? A) Plessy v. Ferguson B) Brown v. Board C) Roe v. Wade D) Citizens United 

In the case of Plessy v. Ferguson (1896), the Supreme Court ruled against Homer Plessy, who was charged with breaking segregation laws in the city of:A) MobileB) ShreveportC) New OrleansD) Montgomery