**EE6604 Question Bank Design of Electrical Machines**

EE6604 Question Bank Design of Electrical Machines Regulation 2013 Anna University free download. Design of Electrical Machines Question Bank free pdf download.

**Sample EE6604 Question Bank:**

1. Define transformation ratio.

It is defined as the ratio of secondary terminal voltage to primary terminal voltage.

It is denoted by k.

K = Vs /Vp = Ts / Tp = Ip / Is

2. Name the types of transformer.

Based upon construction, the types are

Core type and

shell type transformer

Based on applications, the types are

Distribution transformers

Power transformers

Special transformers

Instrument transformers

Electronics transformers

Based on the type of connection, the types are

Single phase transformer

Three phase transformer

Based on the frequency range, the types are

Power frequency transformer

Audio frequency transformer

UHF transformers

Wide band transformers

Narrow band transformer

Pulse transformer

Based on the number of windings, the types are

Auto transformer

Two winding transformer

3. Define windows space factor or window area constant.

It is defined as the ratio of the are of copper in the window to the window area.

Kw = Ac / Aw < 1

Ac is the area of copper in m2

Aw is the area of window in m2

4. Define iron space factor.

It is defined as the ratio of gross core area to the area of the circumscribing circle.

Kis = Agi / Ace < 1

Agi is the gross core area in m2

Ace is the area of circumscribing circle in m2

5. What is a function of a transformer?

It increases or decreases the voltage at same frequency.

It transforms energy from one winding to other winding at constant frequency.

It is used in electronic circuits with rectifying units to convert ac to dc.

It provides isolation between to electrical circuits.

Subject Name | Design of Electrical Machines |

Subject Code | EE6604 |

Regulation | 2013 |

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