Compare core type and shell type transformer.

Compare core type and shell type transformer.
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Answer :

Core type
Shell type
It has one window
It has two windows
It has one magnetic circuit. 
It has two magnetic circuits. 
Core surrounds the winding. 
Winding surrounds the core
The average length of the core is more.
The average length of the core is less.
Area of cross-section is less so more turns are required.
Area of the cross section is more so less turns are required.
Better cooling for winding
Better cooling for core 
Mechnical strength is less
Mechnical strength is high
Repair and maintenance is easy
Repair and maintenance is difficult
Application: Low current, high voltage
Application: High current, low voltage
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Answer :

Shell Type Transformer
Core Type Transformer
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image
The core surround the windings 
The Winding surround the core
Magnetic Flux is distributed into 2 paths 
Magnetic Flux has only one continuous path
Suitable for less voltage & high output
Suitable for high voltage & less output
Difficult for repairs 
Easy for repairs  
More in Weight 
Less in Weight 
It has two windows opening 
It has one window opening
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