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 18850

difference between a four point starter and three point starter

9 79008

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

9 19578

enlist types of dc generator

Philips,

8 15123

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

Reliance, SCL,

3 9098

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

Bhel, Regal Beloit,

2 18188

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

Aegis,

2294

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 18656

EXPLAIN THE TRANSFORMER MAINTENANCE?

Enercon, ERT, GEL,

2281

errection check list for transformer maintenance

RRB,

2604

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

Thermax,

2 12707

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 5283

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

2 4849

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 30467

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

Wartsila,

5 16798

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Un-Answered Questions { Electrical Engineering }

why the carbon brushes are broken in srim while the motor runningtime

1716

how to modify DOL control panel into Delta Y connection?

1951

What is resistance reading of earth copper rod with grid and without grid?

1147

How to synchoronize the generator (with gcb,GT) to grid????? ????? from Grid iam getting power (rated 400kv/20kv) through GT and its goes to UAT.,,ST.,, now my generator(rated 20kv ) ready.,, now iam closing my GCB.,, in GT iam suddenly giving 20kv on that Gt.,, what will happend

2076

ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]

2372

What is real time power factor control panel(RTPFC)?

4311

How the capacitance og capacitor volatage transformer is decided?

1970

What is open delta Xformer? It's adavntages & Use?

2232

On what cycle does thermal power plant operate?

1159

what are the different sizes of U.G. cable & where these cabl;es are used according to voltage ..

2106

circuit diagram of trip circuit supervision relay

2054

If we connect a motor and generator together (I mean that the generator gives the motor electricity and the motor gives the generator movement) regardless the losses. Will the generator still generate and the motor still move?

2287

there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

1934

Define maximum demand?

1067

What is the name of the winding from which the supply is taken for load connections?

1077

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