Power Systems
Steady state stability of a power system is improved by

 single pole switching
All of these
 decreasing generator inertia
 using double circuit line instead of single circuit line

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Power Systems
Which of the following statements is/are true? The elements of each row of a Y bus matrix for load flow studies in power system add up to zero

 if the shunt admittances at the buses are ignored
 if the mutual couplings between transmission lines are absent
 if both 2 and 3 are satisfied
 always

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