In a core-type single-phase transformer the steel-core is assembled by staggering butt-joint in adjacent layers of laminations vide figures. The purpose served is said to be 1. Avoiding continuous air-gap 2. Preventing loss of mechanical strength 3. Reducing eddy-current loss Which of the above statement are true?

1 and 2 only
1 and 3 only
2 and 3 only
1, 2 and 3

LohaHridoy

8 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 1 : 1 and 2 only

The staggering of butt joints avoids a continuous air gap as the flux can take a path from the neighboring layer at the joints.
At the same time, staggering maintains the mechanical strength of the core. The air gap also avoids magnetic saturation of the core.
Staggering of butt joints does not affect eddy currents. Eddy currents are reduced by laminations.

Hence statements 1 and 2 are correct.

8 views Answered 2022-09-04 04:29

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