GETCO EXAM PAPER (30-11-2008)

both (a) & (c )

controlled by load frequency control equipments

set by design factors

determined by system operators

may be limited by stability considerations

is always limited by conductor area

both (a) & (b)

is increased at low ambient air temperature

Core loss

Copper loss

Hysteresis loss

Eddy current loss

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

output is out of phase with respect to input

losses are abnormally high

the output is sinusoidal and hence cannot be measured

any of the above

large internal fault

saturation of magnetic circuit

over load