# Electrical Interview Questions

**URL:** <https://forumautomation.com/t/electrical-interview-questions/929>\
**Category:** Electrical\
**Created:** [March 29, 2016, 4:24am UTC](https://forumautomation.com/t/electrical-interview-questions/929 "2016-03-29T04:24:47Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![denizen](https://forumautomation.com/letter_avatar_proxy/v4/letter/d/848f3c/32.png) [@denizen](https://forumautomation.com/u/denizen)\
**Post date:** [March 29, 2016, 4:24am UTC](https://forumautomation.com/t/electrical-interview-questions/929/1 "2016-03-29T04:24:48Z")

</div>

Electrical Interview Questions

1.Transformers are used to change the value of ?

Answer - Voltage

2.The path of the magnetic flux in a transformer has

Answer - Low reluctance

3.The transformer is a

Answer - Static device

4.Transformer works on principle of

Answer - Both self and mutual induction

1. Rating of transformer is given in

Answer - KVa

6.If the higher voltage is given to the primary and low voltage is taken from the secondary of transformer ,it is called

Answer - Step-down

7.Different types of transformer are

Answers - Core type,Shell type,Berry type,

8.If a lower voltage is given to the primary and higher voltage is taken from the secondary of transformer ,it is called

Answer - Step-up

9.The transformer ratio of a transformer is

Answer - N2/N1