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HAL Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How CFL &T5 tube light glows?


Is it required to use Automatic transfer Switch in L&T panel board if we use AMF panel with DG set? How the single line diagram will be? Please forward the material to


How will be the single line diagram of series trip HT breaker? how it works?


Is it required to use 2 nos of body earthings to any machine though if we use TP with E supply is provided to Machine?

2 2916

In our factory there is one no. of Series trip HT 6KV OCB. 1. Is it possible to measure CT out put current by 440V Clamp meter? The measurement is required for knowing the exact value of current in CT secondary to set up protection for transformers. 2. plase forward the single line diagram of AMF panel?

1 2443

How can we findout the maximum efficiancy of Transformer? At which load?


what is the formula for efficiency of francis turbine and generator for hydropower? what is best way to select francis turbine and generator?


Why voltge arev transformed in to 132KV/66/KV/33KV like that

5 6772

Please clarify, 1. Is it required to lay two runs of GI wire along with Armoured LT cable if it is laid between one big mains (63Amps TPN SDF) to small main (32A TPN SDF) with proper glanding termination? 2. If the armoured cable with proper glanding is laid from DB to CNC machine, is it required to run two runs of body earthing to the Machine from DB? 3.If the armoured cable with proper glanding is laid from Substation to Hangar, distance is approx. 100 mtrs, is it required to do earthing at shop area though the primary termination at substation is earthed through gland.


We have 90mX100m hangar with 16 no.of supporting pillar. It is required to provide power supply on all pillars. what is suggested earthing scheme for hangars.


difference between microprocesser and microcontroler

1 2285

i am going to attaned the engineer (disign)iterview at HAL please give me duid line


what is a bus post insulator? explain its application in a substation.

1 11165

Which type of power plant is more easier to produce electrical power at economical condition?

8 7197

is electrons really flow or they just vibrate at their position?

5 6911

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Explain me what procedure codes are you most familiar with? : insurance health


In Rcc ratio calculation I wanted to know quantity of Steel also.


Hello Friends, Can anyone please let me know about Performance testing health care EDI ( 270,271, 835 ect). I need as detailed answer as possible. I am going to use LoadRunner for load testing. I would really really really appreciate your help. Thanks, Piyush


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What is attribute and reflection in c#?


Do you have the qualities and skills necessary to succeed in your career at Clarks Shoes?


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A 30 year old woman requests termination of pregnancy at 7 weeks gestation. How you will counsel her and discuss the available options for pregnancy termination.


Explain histogram in photoshop?


How to use of return keywords in python?