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Electrical Engineering Interview Questions
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if we use a normal natural thundering; than approx how much amount of electricity we generate?

Visa Steel,

1 2014

what is the voltage equation of 240/12 v transformer??

 1 3829

why lightning arrestor are made in two stack of insulator but why not cvt

 1468

1.what is use of isolation transformer. 2.Differance between KWH,KVAH,KVARH,KVA. 3.Main use of the CT and PT.

 1 8504

What is the difference between eath fault protection & Restricted Earth fault Protection?

 2 4971

What are protection of transformer on HT side & on LT side?

 4 19803

What is the impedence of Transformer?

 2 4324

what is the meaning of harmonic in AC waves and when which are prduce and what is the effects on line and give any other information about harmonics

 1 3948

why is only master neutral contactor is made to switch in synchronization of dg sets

Honeywell,

4 10947

Whats the minimum value for I.R. that can be allowed for HT & LT alternators for operation?

 1 3383

A 3 phase motor operating off 415V system is developing 20Kw at an efficiency of 0.77 and power factor of 0.73. determine:- a)the line current. b)the phase current if winding are delta connected. c)the phase voltage if winding are star connected.

 1 2340

what is negative phase sequence

 1 2211

Whether capacitor loads can be connected for testing a diesel engine at its full load capacity? Is there any limitation of capacotir load? Which is the best load for testing DG sets?

 2 3501

how can we save enegry by using VFD for Resiprocating Air compressor which is having more unloading running hours

MRF,

1777

In Which vector group power transformers are mostly manufactured?

MRF,

1 3304

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Un-Answered Questions { Electrical Engineering }

PIU how does work?

1974

Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.

1642

what is the difference between megger and earth resister ??

1321

What are chief characteristics of state-space method and its techniques ?

1663

what is the meaning of neutral displacement ???

2242




how we provide neutral earth on synchronising panel as per electrical standards?

1584

what type of earthing do for dry fissure rock?

2024

who can measure the size of power cable?

1555

Why does the rotor rotate?

1791

How to know any size of cable if there are not written on cable? Answer must be theurical not by experience.

1661

What is the difference between acs 550 & acs 850

5354

What about electrical Units. discrive in detail

1493

Y phase plates are used in transmission line??? what is there need???

2422

Explain the purpose of inductor in an electric circuit?

628

Transmission through a short line depends on

1663

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