Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

what solid earthing means?

3 18732

difference between a four point starter and three point starter

9 78751

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

9 19259

enlist types of dc generator

Philips,

8 14883

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

Reliance, SCL,

3 8954

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

Bhel, Regal Beloit,

2 18078

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

Aegis,

2229

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 18447

EXPLAIN THE TRANSFORMER MAINTENANCE?

Enercon, ERT, GEL,

2223

errection check list for transformer maintenance

RRB,

2562

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

Thermax,

2 12592

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 5170

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

2 4759

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 30303

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

Wartsila,

5 16611

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Un-Answered Questions { Electrical Engineering }

placing earthing pit in pathway is correct or wrong??. placing earthing wireGI1/18 inside walls is correct or wrong?. explain!!!

2121

is the value of inductance depends upon the evalue of thitha in doubly excited machine?

1836

What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?

2245

How much costly in percentage wise is sandwich busduct costly than air insulated busduct of any rating?

1744

What is the capacity of the Fastners 12mm?

2385

Which is the largest hydropower station in the world?

1101

if an insulated power and control cables of a running gas diesel gensets laid direct in an open trench i.e, trench bed is not rcc of a power house in which rain water, spillage water alwas exists and all power control cables remains submerged even when gas gensets of 480 kw each runningin on load. These power &control cables runs from power house to switchgear room through these trenches in which water remains most of the time. pl explain its merit & de-merit

1833

electrical

2265

Generator,motor and alternator Working principal Please explain easily

1435

Difference between rating factor of cable and derating factor of cable?

1599

what are the basic insulation levels & what its Unit

1966

1.what is the difference between ct and cvt? 2.what is the difference between pt and cvt? 3.what is the difference between relays and circuit breakers?

2719

what is meant by impulse voltage?

1969

if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side

1832

State nyquist stability criterion.

1126

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