Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is bandpass of a transformer?

2 4203

When a square wave is applied to primary of a transformer then what will be output wave form of secondary ?

Sail, TCS, Bhel, Sterling Telecom,

15 36357

please send me the L&T Emb. sys. placement papers and entire details of pattren

L&T, HMM,

1011




Why we connect the capacitor in Delta?if we conect in Star what will happen?

9 25202

What is IGBT?Where it is used? What is the difference between IGBT and Thyristor?

HBL Power Systems, AC, Formo Plastic, SECL,

5 56607

What is mean by diversity Fator?

7 15552

can we use 220 volt 15 w a.c. lamp on 220 volt d.c.

Philips,

11 12913

Explain Clearly Pahase and Neutral?

7 6934




Why the Motor takes High Current in Starting time?

5 8151

What is the difference between Surge protection device and Lighting arrester?

6 11443

Explain the working principle of Synchronous Generator and Assynchronous generator?

TATA,

11 44092

why the current leads voltage in the case of a capasitor

Infosys,

9 12600

Motor also having losses, we call KW rating. In transformer and generator having losses but we call KVA Rating why?

9 10304

The rotor current is directly proportional to slip. How?

3 5001

How the starter control the starting current in three phase AC Motor?(In DC apply the reistance).

6 11159


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Un-Answered Questions { Electrical Engineering }

Why phase sequence must be same in any ht motor or generator circuit?if phase sequence doesn't same whatever will be affect on circuit?

911


How to calculate total harmonic distortion level(THD) in VFD? and how can we reduce harmonics?

2585


Difference between On Line capacitor and Station Type capacitor.

826


what is kondo syatem in eletrical traction

795


Which motor is 3.3 or 11kV more reliable, in terms of efficeancy,maintenance, reliability.

710






What is inverse definite minimum time lag relay? Where is it use?

1403


hi i will D.E.E.E.is completed pls send rrb diploma old qustion papaer sent in my e mail. i.d.

1029


in my working site. momentary jerck in electrical supply ocurred frequently which cause of multiple losses in our electrical equipements. how can we protect our electrical machines and equipements in this situation.

1460


How to calculate the sag on transmission Lines.

1457


WE ARE PLACE A NEW 75 KW MOTOR FOR JPF.IT IS CONNECTED IN M.C.C. WHEN WE ARE STARTING M.C.C.INCOMER IS TRIPPED.THEN WE ARE CONNECTED IN P.C.C WITH A MM30 RELAY PROTECTION THEN WE ARE STARTED MOTOR WILL RUN SMOOTHLY.

719


wat is meant by PX class in ct?

722


Practical condition in 400KV Sub station:- Breaker(open) , isolator(open), Earthing (close) at both end e.g A & B. Now Open A Stn Earthing than Open B stn Earthing (Which have a 50MVA reactor) , AND suddenly show R,Y,B phase 704KV,573KV,118KV respectively. Que is without closing of breaker how it is possible.???? My Whats app No:07621840498 for Further Discussion. Pls experts suggest.

811


sir, i am 3 years diploma course pass out candidate.what type of certificate can i got in marine service.

688


how can we change the phase angle b/w two phase?

2323


How to calculate cable size in HT AND LT

616