Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why AC voltage source are generate as 50 Hz ?

4 5038

What will happen if induction motor is supplied with capacitive load?

NTPC,

1 4510

how we identify between current transformer and potential transformer without having it name plate?

L&T, TATA,

5 10773

Please give the formula for converting from 1 tr refrigeration to kw.

Bugema University,

2 3432

what is settable hystersis protection? If any body knows plz kindly post the answer..

1530

what is the formula for computing cable tray size & capacity

1676

what clearance required for 4.5 mva dry type transformer?

SPS,

1598

how to calculate lighting for a room

Coca Cola,

2 6585

How can we select suitable capacity generator for three phase load (inductive load) and how to take study analysis in 3 three phase load system ?

1642

A group of machines (wind turbines) connected with 33KV feeder and each machines are having individual VCB. The 33KV feeder connected with 110KV/33KV substation. The 33KV feeder tripped by over current at Substation and fault recorded at Substation as OC-R&Y phase. Same time the group of machines VCB tripped by over voltage, the fault recorded voltage was above 66KV by numerical Under/Over voltage relay. While grid drop time, this much of voltage hike is possible?

1 2682

method to check earthing

ECC,

5 9617

why slipring motor , at full speed run as squirrel cage motor?

1 3267

I have running 4 generator in paralel.All generators Voltages is same(470 V),KW also same (100 KW) but only No2 generator Amper is high than another generators. DG No:1,3,4 470V,100KW, 150 A DG No:2 470V,100KW,400 A

4 4171

What is the permissible value of earth resistance and as per which standard / act / rule ?

HBL Power Systems,

3 5352

The loads are connected with phase and ground then why current flow as the loads ?

1456


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

In Power cable specification what is U0/U and Um.

3184


how to calculate cable size in diffrent loads?

1613


What was your role in the silicon evaluation/product ramp? What tools did you use?

1536


What is the difference between grid and off- grid system??

1463


How to design pavement quality concrete by using C.R.C.P Method

1254






On a 6 KVA UPS we have to provide a DC MCB for Battery bank of 16 nos (12 V 42 AH). What Shall be the current rating of DC MCB ?

2093


why power not passes in plastic and rubber material

1518


why impudance relay used for medium transmission power system? why not others?

887


Can we use both Electrical & mechanical interlock between tow breakers? if yes how, please explain

947


What is the different types of cable & current capacity of cable

1422


Which type of DG need Netral Earthing?

4473


In the magnetic fluxes, what is the role of armature reaction?

659


Which type of motor is used in trains, what is the rating of supply used explain working principal?

749


Z transform is use when system is not a) converges b) diverges

1156


BRIEFLY EXPLAIN THE STORAGE CLASSES AND THEIR TYPES IN C

1832