Multiple Choice
The usual values of maximum flux densities for distribution transformers using hot rolled silicon steel are
A) 0.5 to 0.8 Wb/m2
B) 0.8 to 1.0 Wb/m2
C) 1.1 to 1.35 Wb/m2
D) 1.4 to 1.8 Wb/m2
Correct Answer:

Verified
Correct Answer:
Verified
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
Q21: Multi-layer helical windings are commonly used in
Q22: are always double layer type.<br>A)Closed windings<br>B)Open windings<br>C)Either
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