Electrical Engineering Interview Questions

WHY WE CAN GENERATE POWER IN 3PHASE MODE ONLY NOT IN 4 OR 5 PHASE?

9621

How can the direction of a three phase induction motor be reserved

7835

WHY WE CAN GENERATE POWER IN 3PHASE MODE ONLY NOT IN 4 OR 5 PHASE?

5266

what sort of general awareness questions are asked in o.n.g.c entrance exam?????????????????

3465

if you short the any 2phase(R,Y,B),why fuse get blown?

4637

How we can determine short circuiting current any plant and for example a plant which power generation is 415 volts and plant load is 500 kw.

816

how electronic energy meter works?

3516

why rating of motor in HP?

19031

WHERE IS THE LIGHTING ARRESTER SHOULD BE PLACED IN DISTRIBUTION LINES?

Bhel,

4271

1.Can anybody explain Why starters are not used for motor starting in industries? 2.

3731

What is difference between miniture circuit breaker and module case circuit breaker up to 63Amp.

MSPL,

8143

what is softstarter?

3817

Hi,i want to appear for IES (EEE),can any one plz help me how to apply and how to prepare

2858

why rotor current reading is taken & why not stator?

3507

HOW DO A DISTANCE RELAY SENSES THE FAULTY ZONE.

8831

Un-Answered Questions { Electrical Engineering }

what is meant by impulse voltage?

773

what is the difference between interconnection and intraconnections in the circuit diagrams

5548

we have 2.2kw,Y,3000rpm motor but 6leads found in TB what happen if we connect in delta?

473

1.Can we use 6.6/11KV 300sq mm xlpe 3core cable for LT use (415 Volt). 2. If we use it for LT then what is the current rating

495

Help need in transformer !? Hello Friends The parameters of 2300/230 v 50hz t/f is R1=0.286 ohm R`2=0.319 ohm Rc=240 ohm X1=0.73 ohm X`2=0.73 ohm Xm=49.2 ohm Secondary Load impedance ZL=0.387+J0.29 solve the exact equivalent circuit with normal voltage across primery.. I know every thing but i cant find CURRENT I1=? and I`2=? Please help me give solution or only Formula please please...

800

how hydrogen cooled alternator undergo maintanence ? that is hydrogen when come in contact with air can result into explosions .

723

Why is a synchronous motor always star connected??

1232

why +24 v and -48 v give to BTS? If -48v protect from surge then why we not use -24 v?

679

what are the problems that generally occur in power flows??

1470

What are your personal skills and abilities for such a Master Course and your possible preparation to undertake this course?

819

Suppose a 3 phase, 2 pole, 440V induction motor is driving a flywheel of 600mm diameter, 150kg mass. By using v-belt and pulley, the speed is increased to 4500 RPM. What will be the effect on motor current?

184

Working of microwave oven?

1000

HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT SWITCH BOARD,MLDB,ACB,BUSBAR,ETC...?

2655

Transformer cores are laminated in order to A simplify its construction B minimize eddy current loss C reduce cost D reduce hysterisis loss

1897

Please tell me in DETAIL about the following 3 types of fuses or recommend me a good power system protection book or a website link ? 1.Dropout Fuse 2.Striker Fuse 3.Empulsive fuse (not sure if its impulsive or explosion fuse , sorry)

853