ONE LINER ELECTRICAL QUESTION ANS ANSWER   1. A T-T connection has higher ratio of utilization than a V-V connection only when ? ans- non identical transformer are used . 2. For 3 to 3 phase converson , which polyphase connection would you select ? ans- Delta / Inter connected star . 3. Five limb core construction of a transformer has advantage  over three limb core construction that ? ans- magnetic reluctance of the three phase can be balance . 4. Transformer winding are tapped in the middle  because ? ans- It eliminates axial force on the winding. 5. For large power transformer , it is preferred to use ? ans- Tank with separated cooler. 6. In a transformer with close magnetic cooling between primary and secondary winding ? ans- Regulation will be good . 7. For getting minimum weight of a transformer the weight of iron should be ? ans- Equal to the weight of copper. 8. A constant current transformer should not have ? ans- high value of resistance. 9. scott connection ...