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Electrical Substation Bushings

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Questions and Answers

What is the shape of the laminations in a shell-type transformer?

Circles

E's and I's (correct)

Triangles

Squares

How many limbs does the core of a shell-type transformer have?

3 (correct)

What is the characteristic of the central limb in a shell-type transformer?

It is shorter than the outer limbs

It carries half of the flux

It carries whole of the flux (correct)

It is the same width as the outer limbs

What is the type of winding used in a shell-type transformer?

Sandwich-type (A) Signup and view all the answers

What is suitable for high voltage transformers?

Core-type transformers (B) Signup and view all the answers

What is the characteristic of the mean length of coil turn in a shell-type transformer?

It is longer (B) Signup and view all the answers

How many limbs does the core of a core-type transformer have?

2 (C) Signup and view all the answers

What is the type of winding used in a core-type transformer?

Form-wound (D) Signup and view all the answers

What is the characteristic of the windings in a core-type transformer?

They surround the core (B) Signup and view all the answers

What is suitable for low voltage transformers?

Shell-type transformers (B) Signup and view all the answers