# Electrical **URL:** https://forumautomation.com/c/interview-questions-and-answers/electrical/37.md [Latest](https://forumautomation.com/latest.md) · [Categories](https://forumautomation.com/categories.md) · [Tags](https://forumautomation.com/tags.md) --- ## [About the Electrical category](https://forumautomation.com/t/about-the-electrical-category/1314)
**Author:** [@Administrator](https://forumautomation.com/u/Administrator)\ **Replies:** 0\ **Last updated:** [September 3, 2016, 4:40pm UTC](https://forumautomation.com/t/about-the-electrical-category/1314 "2016-09-03T16:40:25Z")
Electrical Engineering Interview Questions and Answers --- ## [What Is The Difference Between Float Charger And Boost Charger In Industrial Battery Systems?](https://forumautomation.com/t/what-is-the-difference-between-float-charger-and-boost-charger-in-industrial-battery-systems/14162)
**Author:** [@ANUSHRI\_SYSTECH](https://forumautomation.com/u/ANUSHRI_SYSTECH)\ **Replies:** 0\ **Last updated:** [June 6, 2026, 5:50am UTC](https://forumautomation.com/t/what-is-the-difference-between-float-charger-and-boost-charger-in-industrial-battery-systems/14162 "2026-06-06T05:50:36Z")
Float chargers and boost chargers are both used in industrial battery charging systems, but their functions are different based on battery condition and operational requirement. A float charger is mainly used to maintai… --- ## [What is the function of starter in tube light circuit?](https://forumautomation.com/t/what-is-the-function-of-starter-in-tube-light-circuit/12152)
**Author:** [@Rabert](https://forumautomation.com/u/Rabert)\ **Replies:** 1\ **Last updated:** [July 9, 2024, 3:40am UTC](https://forumautomation.com/t/what-is-the-function-of-starter-in-tube-light-circuit/12152 "2024-07-09T03:40:50Z")
Function of Starter in Tube Light Circuit In a tube light circuit, the starter is an important component that helps the fluorescent lamp start up. It has the following functions: Heat the Filaments When you turn on … --- ## [What are the tests conducted on a circuit breaker?](https://forumautomation.com/t/what-are-the-tests-conducted-on-a-circuit-breaker/1334)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 1\ **Last updated:** [July 9, 2024, 3:38am UTC](https://forumautomation.com/t/what-are-the-tests-conducted-on-a-circuit-breaker/1334 "2024-07-09T03:38:07Z")
As such the IEC standards governing Circuitbreaker / Isolators is IEC 62271-1-2007 the following are the tests conducted on a Circuit Breaker : Power Frequency voltage withstand test Lightning Impulse Withstand te… --- ## [What are the IEE Regulations for Electrical Installation?](https://forumautomation.com/t/what-are-the-iee-regulations-for-electrical-installation/12154)
**Author:** [@Rabert](https://forumautomation.com/u/Rabert)\ **Replies:** 0\ **Last updated:** [June 11, 2024, 1:37pm UTC](https://forumautomation.com/t/what-are-the-iee-regulations-for-electrical-installation/12154 "2024-06-11T13:37:57Z")
IEE Regulations for Electrical Installation The IEE (Institution of Electrical Engineers) Wiring Regulations, commonly known as BS 7671, are the UK’s electrical installation standards, which are maintained by the Institu… --- ## [Can we use the electric wire for data transmission?](https://forumautomation.com/t/can-we-use-the-electric-wire-for-data-transmission/11215)
**Author:** [@Sudha\_m](https://forumautomation.com/u/Sudha_m)\ **Replies:** 0\ **Last updated:** [June 4, 2023, 5:11pm UTC](https://forumautomation.com/t/can-we-use-the-electric-wire-for-data-transmission/11215 "2023-06-04T17:11:30Z")
Yes, electric lines can be used to send information in some situations. But it’s important to remember that electric lines are mostly made to carry electricity and might not be the best way to send data. Copper Conduct… --- ## [100+ Electrical Engineering Interview Questions](https://forumautomation.com/t/100-electrical-engineering-interview-questions/10000)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [November 18, 2021, 6:45am UTC](https://forumautomation.com/t/100-electrical-engineering-interview-questions/10000 "2021-11-18T06:45:03Z")
1. What is Electrical Engineering? It is the study and application of electricity, electronics, and electro mechanism. 2. What is a capacitor? It is an electrical component that opposes the flow of current and behaves… --- ## [Electric machine interview question](https://forumautomation.com/t/electric-machine-interview-question/5032)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [October 27, 2018, 2:56pm UTC](https://forumautomation.com/t/electric-machine-interview-question/5032 "2018-10-27T14:56:29Z")
1.The unit of the rate at which energy is expended? Watt 2. What is a tap‐changing transformer? It is a transformer that has one or more leads wire output so the switch can be used to change the output voltage from a … --- ## [What appliances have indutcion motors please tell me](https://forumautomation.com/t/what-appliances-have-indutcion-motors-please-tell-me/4706)
**Author:** [@eletricthrillz](https://forumautomation.com/u/eletricthrillz)\ **Replies:** 0\ **Last updated:** [September 20, 2018, 3:58pm UTC](https://forumautomation.com/t/what-appliances-have-indutcion-motors-please-tell-me/4706 "2018-09-20T15:58:08Z")
what appliances have inductyion motors and where can i find those appliances as cheap as possible/ --- ## [Basic Electrical interview questions & answers](https://forumautomation.com/t/basic-electrical-interview-questions-answers/3360)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [March 31, 2018, 4:58pm UTC](https://forumautomation.com/t/basic-electrical-interview-questions-answers/3360 "2018-03-31T16:58:38Z")
1. Why we use 3-phase supply? Why are not 4 or something else? Answer: 3 phase power generating and delivering is more efficient than 2 phase which in turn is more efficient than 1 phase. Similarly, going up in the nu… --- ## [Safety realys for use in high altitudes](https://forumautomation.com/t/safety-realys-for-use-in-high-altitudes/2275)
**Author:** [@Okal](https://forumautomation.com/u/Okal)\ **Replies:** 0\ **Last updated:** [September 5, 2017, 6:44pm UTC](https://forumautomation.com/t/safety-realys-for-use-in-high-altitudes/2275 "2017-09-05T18:44:18Z")
Does anybody know any Safety relay (for connection of Emergency stop), taht is certified for use in high altitude, for example 4.000m.? --- ## [What is the difference between short circuit Protection and Overload protection?](https://forumautomation.com/t/what-is-the-difference-between-short-circuit-protection-and-overload-protection/2252)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [August 27, 2017, 11:53pm UTC](https://forumautomation.com/t/what-is-the-difference-between-short-circuit-protection-and-overload-protection/2252 "2017-08-27T23:53:17Z")
Both Short circuit and overload protection devices protect motor circuit from over current. Over current or excess current is a situation where a larger than intended electric current exists,which leads to excessive gen… --- ## [Top Electrical Interview Questions and Answers?](https://forumautomation.com/t/top-electrical-interview-questions-and-answers/942)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 1\ **Last updated:** [July 26, 2017, 8:27am UTC](https://forumautomation.com/t/top-electrical-interview-questions-and-answers/942 "2017-07-26T08:27:17Z")
Electrical Engineering Interview Questions and Answers Question 1.Why back emf used for a DC motor ? Answer 1 -The induced emf developed when the rotating conductors of the armature between the poles of magnet in a DC … --- ## [Emergency stop, solenoid automation, looking for advise](https://forumautomation.com/t/emergency-stop-solenoid-automation-looking-for-advise/1513)
**Author:** [@Viking](https://forumautomation.com/u/Viking)\ **Replies:** 0\ **Last updated:** [November 20, 2016, 3:44pm UTC](https://forumautomation.com/t/emergency-stop-solenoid-automation-looking-for-advise/1513 "2016-11-20T15:44:22Z")
Trying to find solution to a challenge connected to a remote emergency stop of marine diesel engines; I need to activate the stop solenoid for long enough time to stop the engine, but immediately after the engine stop, … --- ## [What are the basic components of an Electric Motor?](https://forumautomation.com/t/what-are-the-basic-components-of-an-electric-motor/1458)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [October 22, 2016, 4:28pm UTC](https://forumautomation.com/t/what-are-the-basic-components-of-an-electric-motor/1458 "2016-10-22T16:28:58Z")
Basic Components of Electric Motor 1.Rotor Core 2.Winding 3.Terminal Box 4.Hood to ventilation fan 5.Bearings 6.Output shaft 7.End shields 8.Mounting base 9.Ribbed housing --- ## [What are the steps involved in cable sizing?](https://forumautomation.com/t/what-are-the-steps-involved-in-cable-sizing/1344)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [September 11, 2016, 5:47am UTC](https://forumautomation.com/t/what-are-the-steps-involved-in-cable-sizing/1344 "2016-09-11T05:47:22Z")
The major steps involved in the process of cable sizing are 1.Gather Data about the cable,its installation conditions,the load that it will carry. Load Data- Number of phases - Single phase or three phase. Voltage - … --- ## [Electrical Engineer Interview Questions - General Electrical Terms](https://forumautomation.com/t/electrical-engineer-interview-questions-general-electrical-terms/291)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [March 7, 2015, 9:37pm UTC](https://forumautomation.com/t/electrical-engineer-interview-questions-general-electrical-terms/291 "2015-03-07T21:37:55Z")
Electrical Engineer / Electrician Interview question General terms used in electrical engineering Inrush Current This is the peak current that occurs when power is first applied to a unit. It is measured in peak amperes … --- ## [Electrical Engineer - Interview questions (Basic electrical engineering )](https://forumautomation.com/t/electrical-engineer-interview-questions-basic-electrical-engineering/522)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [October 18, 2015, 6:48am UTC](https://forumautomation.com/t/electrical-engineer-interview-questions-basic-electrical-engineering/522 "2015-10-18T06:48:46Z")
Electrical engineer interview questions - basic electrical engineering 1.Define electric current ? Electric current is the movement or flow of electrons through a conductive material 2.Define “emf” / Electromotive forc… --- ## [Electrical Interview Questions](https://forumautomation.com/t/electrical-interview-questions/929)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [March 29, 2016, 4:24am UTC](https://forumautomation.com/t/electrical-interview-questions/929 "2016-03-29T04:24:48Z")
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 d… --- ## [Electrical engineer Interview Question and Answer for Power Plant?](https://forumautomation.com/t/electrical-engineer-interview-question-and-answer-for-power-plant/994)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 1\ **Last updated:** [April 16, 2016, 7:12am UTC](https://forumautomation.com/t/electrical-engineer-interview-question-and-answer-for-power-plant/994 "2016-04-16T07:12:30Z")
Electrical Engineering Interview Question and Answer 1.Why use the vcb at high transmission system ? why cant use ACB? Actually the thing is vacuum has high arc quenching property compare to air because in VCB,the DIE … --- ## [Questions and Answers for Electrical Interview](https://forumautomation.com/t/questions-and-answers-for-electrical-interview/930)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 1\ **Last updated:** [March 29, 2016, 5:30am UTC](https://forumautomation.com/t/questions-and-answers-for-electrical-interview/930 "2016-03-29T05:30:31Z")
1.Explain different types of fault? There are basically two types of fault. a)Shunt faults - Basically shunt faults are short circuits.When the path of the load current is cut short because of breakdown of insulation,w… --- ## [Siemens Interview Questions - Power generation and Electrical Engineering](https://forumautomation.com/t/siemens-interview-questions-power-generation-and-electrical-engineering/827)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 1\ **Last updated:** [March 5, 2016, 10:05pm UTC](https://forumautomation.com/t/siemens-interview-questions-power-generation-and-electrical-engineering/827 "2016-03-05T22:05:57Z")
1.What are the general causes of power system faults ? 1.Fault current - Healthy insulation in the equipment subjected to either transient over voltage of small time duration due to switching and lighting strokes,direct… --- ## [Electrical engineer interview question - Switch gear company](https://forumautomation.com/t/electrical-engineer-interview-question-switch-gear-company/825)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 2\ **Last updated:** [March 5, 2016, 9:05pm UTC](https://forumautomation.com/t/electrical-engineer-interview-question-switch-gear-company/825 "2016-03-05T21:05:54Z")
Interview Questions and answers - Electrical engineer,Electrician and Electrical apprentice trainee. 1.What is meant by reach point of a relay? Ans - The farthest point from relay location,which is still inside the zon… --- ## [Electrical engineering Interview questions and answers](https://forumautomation.com/t/electrical-engineering-interview-questions-and-answers/743)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 2\ **Last updated:** [January 31, 2016, 7:54pm UTC](https://forumautomation.com/t/electrical-engineering-interview-questions-and-answers/743 "2016-01-31T19:54:44Z")
Electrical - Interview questions and answers 1.What is meant by regenerative breaking? When the supply is cut off for a running motor,it still continue running due to inertia.In order to stop it quickly we place a load…