Question 1

Transformers Can Be Divided Into 2 Main Types

Accepted Answer

1.Dry-type Transformers and, 2.Oil-immersed Transformers.

Question 2

Oil-immersed transformers include 4 methods

Accepted Answer

1.Oil Natural Air Natural (ONAN) 2.Oil Natural Air Forced (ONAF) 3.Oil Forced Air Forced (OFAF) 4.Oil Forced Water Forced (OFWF)

Question 3

Method of Cooling Dry-type Transformers:

Accepted Answer

1. Air Natural: This type of method is commonly used in small transformers. In this system, the heat generated in the transformer is cooled by the circulation of natural air. When the temperature of the transformer rises above the temperature of the air around the transformer, hot air escapes due to the natural air convection process and is replaced by cold air. This method is also known as a self-cooled method. This method is mainly used up to 3 MVA.

Question 4

Cooling Methods For Transformers Immersed In Oil

Accepted Answer

.Oil Natural Air Natural (ONAN): This method uses natural air. Thus the core and winding of the transformer are placed in a tank filled with oil. As the core and winding temperature rises, the oil moves to the top.

Cooling Methods of Transformer

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What is a Shell Type Transformer | Constriction Of Shell Type Transformer | Working Principle Of Shell Type Transformer | Application Of Shell Type Transformer

Types of Losses in a Transformer | Efficiency Of Transformer

What is Transformer Oil | Properties Of Transformer Oil | Types of Transformer Oil | Testing Of Transformer Oil