Question

Core type transformers have, LV and HV windings are arranged such that _________

(a) Half LV near the core and half HV outside LV on each limb

(b) LV one one limb and HV on the other

(c) Half LV outside the core and half HV inside LV on each limb

(d) LV and HV windings are sandwiched

I have been asked this question during an internship interview.

Question is from Transformer Construction in section Transformers of Electrical Machines

Answer 1

Right choice is (a) Half LV near the core and half HV outside LV on each limb

The explanation is: Core windng has first of all both the windings on the same limb and HV is placed outside to have tappings to the transformer.