Electrical Engineering Interview Questions

what is the minimum dielectric stregth of transformer oil.

HP,

54289

what are the affects of loose connection in electrical circuit.

HP,

44526

The objective of connecting a resistance and capacitance across gate circuit is to protect the SCR against

2464

what is the diffrantial relay???????why we use it on the MDB

4591

what is the meaning of the parameters labeled on the surge arrestor like 150/20 ???

4797

what is humming AC solenoid

4197

purpose of check value

1384

How to calculate the average power factor in 3 phase unbalanced system

16641

hi i have applied for lic of india south cenrtal zonal ,hyd. i didnt get hall ticket till now.let me know how can i get form internet

732

What are the different methods for calculating Short Circuit Curren?

3298

why transformer rating in kva?

5889

How to convert resistance value at 20 degree to 90 degree?

7128

In stepdown transformer 11/415 volt two nos.(R & Y)HT side fuse is blown ,what will be voltage of ry,rb,yb in secondary side

NTPC,

6674

How to calculate the cable size for particular load

6050

How to calculate the Efficiency of Chiller

2095

Un-Answered Questions { Electrical Engineering }

what kinds of Transformer oil grade is better for power transformer ?

407

ACCORDING TO IEC WHAT SHOULD BE THE MINIMUM HEIGHT OF G.I. STRUCTURE OF CT, PT, ISOLATOR, LA?

881

how many joints are allowed in underground HT cable of 1 KM

479

415v 14kw so can u tell me how i can measure the cable size.then size of the earth also

804

Why cables and busbar both needed in LT Panels?

968

The knee point of a current transformer is normally unique and known.So why in the nameplate of a CT they put the minimum value like this Vk> 400v.

150

dc supply given to dc generator winding.how is possible? my knowledge is saying the winding will burn. please reply.

206

what type of motor used to move a 1 ton gate? and relate ratings with load.

567

What is a surge supressor why its is used in synchronous generators

794

why chock were used in old tubelights but are not newest tubelights?

550

comparision between ACB and VCB

1090

how to calculate cooling requirement of datacentre from electrical load?

1032

Can you explain about Restricited earth fault protection scheme

552

what ispositive, negative, zero sequence impedence?

759

what's prime importance of protection in electrical system.if protection system don't work properly what can happen in electrical system?

699