Electrical Engineering Interview Questions

How many methods to take IR value of Current Transformer?

3396

why autotransformers are not safe for supplying low voltage from a high voltage source?

5477

Explain the experiment on ward leonard method of a speed control on a dc shunt motor with an suitable circuit diagram.

1002

what current is taken from a double wound 500kva transformer

2936

what is the tolerance for the magnetic balance test conducted on the distribution transformer?

822

what is the differn bitween RCCB &MCB

4268

what is b checks and m checks in diesel generator maintenance?

702

how caculate the pump head to maintain perticuler pressure of water and what would be the motor size in hp for the same?

1844

what should be the megger test report for 11KV cable when meggered with 5KV megger , what is the resistance value we should get

9431

how we can calculate power factor without knowing current in 230v 100w load ?

9300

WHAT IS RETARDATION TEST IN DC MACHINES?

15330

What is the List of Equipments, Instruments, Components required in Transmission of electricity from 1 substation to other substation(The equipments required in substation too)? What are the differnt IS standrds used for above equipments in Industry?

7005

What is the pratically meaning of neagative going ac current.

1755

Why a transformer is rated in kVA and not in kW??

6584

my self i am raghu working as tech.. in my college the maximum demand is 211 kva presently we are using 12kva capacitors the target power factor is .95 so what capacity of capacitor banks should i install

2348

Un-Answered Questions { Electrical Engineering }

I want to make street light with solar system ... What may I do for procedure and how much of estimation for each material ... If any one knows guide me and inform this id : aravindd7@gmail.com

215

A car's starter motor draws a current of 100 A at 12,0 V when starting the engine. The mechanical power required to turn the engine is 960 W. At what rate is energy from the battery converted to non-mechanical forms of energy?

437

I AM A ELECTRICAL PANEL BOARD DESIGN ENGINEER.IF I GO ANY INTERVIEW ,TECHNICALLY WHAT ARE QUESTIONS I WILL FACE FROM INTERVIEWER?

5985

what is earthing transformer? draw the winding dia.of earthing transformer.

267

Can we put 3 layers of cable tray while installing tray

833

in general it is observed in power stations, the tertiary winding is used in higher rating Y-Y auto transformer but not in Y-Y power transformer. is the tertiary winding is compulsory then why it is not using in power transformerÂ

227

Transmission voltage is kept 11KV,33KV,66KV,132KV,220KV due to form factor. What happen to 400KV and 765KV transmission voltage?

482

How seriving & testing of the HT & LT breakers are done. What are the standard Ir values on which we can come to know the test is passed or failed?

376

Draw the line diagram of diffretial relay connected to transformer?

877

what should be the acceptrd value of winding resistance for 2.5MVA transformer

747

what are the maximum available current, voltage ratings and switching speeds of the power electronic devices thyristor, power mosfet, igbt, and mct?

484

with out colour codeing on conductor how can be find what is r,what is b,what is y phases.....

459

what is difference between 5A and 100A CT constructional wise and operation?

1341

EXPLIAN THE IMPORTANCE OF POLY PHASE CIRCUIT.

529

Either It Possible a dc Motor to Run On Ac Drive [ Ex : ACS 800 , Yaskawa F7 ] If it is Possible How Pls Inform Me dinesh_elect_eng@yahoo.com

587