GETCO Exam Paper (22-07-2015)
The Y bus matrix is a sparse matrix because …

bus incidence matrix is a sparse matrix
Y primitive is a sparse matrix
no of lines are less
lines are connected to less no. of buses

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GETCO Exam Paper (22-07-2015)
Stray loss is equal to _____

mechanical loss & iron loss
copper loss and iron loss
field copper loss & iron loss
frictional loss & copper loss

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