Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is form factor.and rms value..

IIM, Torrent Power,

1 2493

WHY ARE THE LT GENERATORS SOLIDLY EARTHED WHILE THE HT GENERATORS ARE EARTHE THROUGH NGR OR NGT??

3 4854

what is the maintaining Cf in UPS.

Enercon,

1003




how to design domestic earthing pit and earthing wiring?

1 5024

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

752

why induction motor always operate at lagging p.f.?

4 7011

if we give DC suply to the AC motor what hapen

TATA,

5 4538

Why Indian Electricity frequency desined 50 Cycles as developed countrys are using high frequency with low voltage

1 3066




what is the use of spherical metal balls attached on to the earth wire of transmission over head lines?

2 2481

what is the function of an auto reclosure relay in OHL?

1 3031

why transformer capacity is called KVA and motor capacity is called HP/KW? Why transformer capacity cant call HP/KVA?

5 8174

what happens when back feeding supply accidently collapses with normal supply ??? How?? [that is sometimes in a substation 11kv feeder if their ws long time permit work, back feeding supply will provide from nearest substation... if accidently after the permit work,they charged the feeder without removing back feeding wat will happen...?]

KSEB,

1 2662

Difference between low impedance and high impedance Restricted Earth Fault

1752

Differentiate between Low and High impedance Protection

1 2180

Differentiate between Zero and Negative sequence current

764


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Un-Answered Questions { Electrical Engineering }

how can i change the rotation of the AC single phase induction motor and show me by diagram

591


Why does increasing the magnetic flux in the main field of a d.c motor cause the armature current to reduce??

854


why high speed tripping relay is used in protection circuit why not normal relay

173


Why reactors use before incoming of ac vvfd drive?

542


33kv Rated output avilable in market (any where in india)

962






HAI SENT HPCL APTITUDE QUESTION PAPER, MY EMAIL ID IS angus_eee04@rediffmail.com,angus_eee04@yahoo.com

902


how does the rotating m.m.f is produced in the 3-phase induction motor and how the poles are created in 3-phase induction motor ?

1553


Is a d.c.compound motor is use as a booster? how?

925


witch pump used in wtp

911


what is d check in dg 1500kva

858


what is meant by class 1 E in electrical power supply?

835


can we choose current transformer secondary, to calculate residual flux in a power transformer, so as its saturation is close to the saturation level of power transformer?

222


Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm

961


State the points to be considered for selecting a particular type wiring.

847


What are the factors influence the choice of an electrc drive?

828