Basic concept of power systems, electric machines, and power system protection.

1. Given f,p calculate Ns 2. Given V, I in rectangular form calculate S, P, Q 3. 1+a+a2=0 and symmetrical forms what is a, a2 4. Given Va, Vb, Vc calculate +ve, -ve and zero sequence voltages 5. I f= ... calculate zero sequence current and related questions 6. time constant of, RL, RC circuits 7. Secondary impedance of transmission line. given CTR, PTR, Zline. Calculate Zrelay 8. Resistance of transformer with respect to the primary when primary and secondary voltage is given 9. Given V L... calculate Vab or vice versa 10. Truth tables XOR etc