Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How many methods to take IR value of Current Transformer?

1 3447

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

5 5696

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

1041




what current is taken from a double wound 500kva transformer

4 3006

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

890

what is the differn bitween RCCB &MCB

3 4341

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

1 746

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

1 1892




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

7 9605

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

10 9713

WHAT IS RETARDATION TEST IN DC MACHINES?

4 15998

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?

2 7204

What is the pratically meaning of neagative going ac current.

1 1811

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

9 6693

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

2 2412


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Un-Answered Questions { Electrical Engineering }

what is meant by negative sequencing in power system.explain in detail

590


What is the actual meaning of thermal power efficiency ?

603


Can we test the alignment of End shield and stator of turbogenerator without rotor insertion? Also how to fix maintain the alignment at site installation?

650


What is the effect of interchanging core(made of steel) and winding(made of copper) material in case of transformer? Give proper explanation in regard to different losses in transformer.

409


X/R ratio in 11kv transmission line is?

2634


What are the protections for safe running of electric generator?

663


how to give earthing in plain?

451


I Have 3 Phase 10 KW AC Alternator i found one phase weak, so what will be the reason & what action shouls i take to rectify the same.

530


What is an alternator impedance value?

1463


What is genrally the % Impedance of a Dg set? How can we calculate Earthing conductor size for a DG set?

1505


What is the working mechanism of OLTC in Power Transformers????

2912


what's the difference between abs/inc encoders. apart from the position remembrance what are all the other differences. and what's mean by grey code.

504


How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).

465


what is the diff. between x'mer , isolation x'mer & ultra-isolation x'mer ?????????????

552


i have attended the interview on 4th June,08 at Kolkata in IOCL, can anybody tell me what is its result

633