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 19010

difference between a four point starter and three point starter

9 79362

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

9 19942

enlist types of dc generator

Philips,

8 15421

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

Reliance, SCL,

3 9288

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

Bhel, Regal Beloit,

2 18331

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

Aegis,

2346

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 18928

EXPLAIN THE TRANSFORMER MAINTENANCE?

Enercon, ERT, GEL,

2345

errection check list for transformer maintenance

RRB,

2661

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

Thermax,

2 12848

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 5482

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

2 4963

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 30704

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

Wartsila,

5 17028

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Un-Answered Questions { Electrical Engineering }

why we use single core 630mm2 cable for transformer secondary side

982

why the arc welding machines require parallel earthing systems? ie why each machines are connected to earth pit by separate wires during earthing? wats it adavantages?

2270

Do you know what is dry-out test in x'mer

2713

List out the the types of Mounting Light fixture?

1666

explain wiring system

2634

132/66kv sub-station procation ?

2323

why do we use spark detector inside the slip ring brush compartment 0ona slip ring induction motor?

2156

draw the restricted earth fault protection circuit install on power transformer and identify its parameters and draw C/C curve of it

2777

how we decide wire gauge for ac or dc coil and what is the basic diff. B/w these two coil?

2263

typically in power distribution substation. 1- Any idea how would be the graph of capacitor bank consumption verses time through the day . 2- How is the switching ( on and off ) of the capacitor bank, per need?

1788

What is lc oscillator?

1246

What is voltage divider rule?

1243

What is warm / cold start of HT motors. How many warm start & cold start are possible in a day?

2114

what is the meaning of number in (11, 31, 61,14, etc. CDG11, CDG31, CDG61, DDT32

1507

how oil in the MOCB was reduced compared with OCB? what are the features of the MOCB?

2842

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