Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what solid earthing means?

3 16796

difference between a four point starter and three point starter

9 75828

wts d diff b/w C.T. & P.T.?

9 16169

enlist types of dc generator


8 12441

plz tell me in detail about c.t. and p.t. ?

Reliance, SCL,

3 7525

How to calculate electrical Induction motor heating and cooling time constant,11KV,2850,12P,SCIM

Bhel, Regal Beloit,

2 16500

In PFI plant one stage capacitor connection is directly connected(with out megnetic contact controll). but why?



for 1000kva transformer how kvar rating is need for this PFI plant. and how does it will calculate? and Apmpere rating of main cable connection?

Engineers India, GCC, KP, QPSL, Siemens,

6 15955


Enercon, ERT, GEL,


errection check list for transformer maintenance



how we select the fuse and OLR rating for 3 phase induction motor from 1HP TO 100 HP?


2 11228

our company have 750 kva oil transformer.still we have facing a problem that is when voltage is 11.5 kv coming from HT side then LT-side voltage is 420v or above at tape 1.please give me best solution to decrease the voltage.

3 3945

if we are using ACB in a panel the how much clearance do we need in panel room.

2 3861

For Synchronisation of DG Sets Sometimes we people use NIC (Neutral Isolation Contactor) Instead of 4-pole ACB or any switchgerar..Please guide me why is it so????

Piramal Glass Limited,

4 27914

can we use metering current transformer as protection current transformer if not why? & if yes why?


5 14616

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Un-Answered Questions { Electrical Engineering }

What is clock position of Transformer?what are the clock positions are there?and what is different of them?


what percent do you derate your copper wire when you change from copper buss to copper wire


A 400KVA transformer has 400 Hz frequency. If the frequency is changed to 50 Hz, then what will be the new KVA rating?


how to extend relay operating timing in 24V dc relay card (without using Timer )


What is the diff. between single compression and double compression gland


Can we use a absolute encoder to show rpm of a motor ? what about the condition when power is off ? what is difference if a incremental one is used ?abanirout@gmail.com


what is difference between cpp electrical system and refinery electrical system


What is the effect on power factor, shown by a trivector meter; incase of reverse phase sequence. If the power factor of a system is lag what meter will show in case of reverse phase sequence connected to the meter. and What in case of lead.


What is the size of a 60 watt and 80 watt tubelight?


What happens to a line-frequency of high-frequency transformer when it is first energized/ re-energize?


can anyone give an idea about dia calculation in cold rolling mill


how to calculate percentage impedence at 75 deg C at normal tap


How many types of electric motors are there?


What is I to C?


what happen if the load connected to the induction motor is taken away? the same question for synchoronous generator in synch i think that the the exitation voltage will appear on the terminal only if so plz answer me