Are Always Double Layer Type

Q15: The distance between the starts of two

Q16: The winding where dummy coils are used

Q17: Disc windings are primarily used in<br>A)short capacity

Q18: Helical windings are used in<br>A)distribution transformers<br>B)power transformers<br>C)shell

Q19: The flash point of transformer oil should

Q20: The usual values of maximum flux densities

Q21: Multi-layer helical windings are commonly used in

Q23: The cold rolled grain oriented steel has

Q24: For 275 kV transformers, using cold rolled

Q25: D.C. windings are<br>A)sometimes 2-layer type<br>B)never 2-layer type<br>C)always