GETCO EXAM PAPER (30-11-2008)

controlled by load frequency control equipments

determined by system operators

both (a) & (c )

set by design factors

may be limited by stability considerations

is increased at low ambient air temperature

is always limited by conductor area

both (a) & (b)

Hysteresis loss

Copper loss

Eddy current loss

Core loss

efficiency of transformer is usually high and hence extremely accurate measurements will be necessary

the output is sinusoidal and hence cannot be measured

output is out of phase with respect to input

losses are abnormally high

any of the above

large internal fault

over load

saturation of magnetic circuit