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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Can any one know what are the symbols at the down (below) the analog ammeter??? there are 4 symbols which are they ?????

1022

how the capacitance is caluclated if the load is varying to keep the power factor constant(above0.95)

1 2423

what will happen if the field and armature both are made to rotate in a synchronous machine ?

4 3506

Can Superposition theorem be applied to AC Circuits?Can Thevenin's Theorem be applied to AC Circuit too?

HCL, NPCIL, Shivam, Vast,

6 16634

pls tell me about ups internal connection & we have given only 3 phase supply to ups system how get 4 wire (R Y B N )

Bhel, IBM,

1766

how to claculate the ups load in KVA pls give the if any fourmoul?

4 4118

pls tell me function of closing coil of A.C.B.

2445

which is the most advanced form of SF6 BREAKER?Can we use other gases to quench the arc?

TATA,

1124

WHATS THE DIFFERENCE IN USING THE 125% AND THE 250% FACTOR OF SAFETY IN CALCULATING CIRCUIT BREAKERS CAPACITY IN MOTOR APPLICATION??

1101

if neutral earthing is weak of a system then how can we improve it ? Technically explanation ??

CS, L&T,

1 3544

Can any one help me how to set an overload set the range from 2.8A to 4A , rated motor current 22A, CT 60/5A

2 2910

why we ground the scondary of current transformer.

4 3909

what is the name of oil used in transformer

Energy Pack, Genco,

11 15396

what will happen if u run induction motor beyond its rated speed

Adani, BARC, Bescom,

13 13666

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

Schneider,

946


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Un-Answered Questions { Electrical Engineering }

our factory is going under construction mean time transformer 1000 kva 2 nos &load break swithch 12 kv & 4 nos 750 kva 2 nos & 380 kva 2 nos generator to be errcted.how to arrange earth pits &how to earth connect & neutral pit how to calculate in earth bit size.

1222


how do prepare ongc exam.how is it question model.i am electrical. which part covering in electrical.tell me

1402


How to perform a DC resistance test In Alternator and their proceduces?

471


What is the difference between a fuse and a breaker?

180


i want to know how to determine that a surge arrester work properly in 11kv system. and how to test a 12kv surge arrester

1210






How to calculate ant test the burden of Current transformer

1497


can we conduct the swineburne's test on a dc series motor? why?

1107


A low wet bulb temperature indicates

235


7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?

1327


Explain bypass capacitor?

212


we have one oven for 12 zone we are installed ir lamp in oven we control load from thyrister and 0 to 5vdc so our zone no 8 getting bright in fraction of second so what we do.. Please answer

876


Explain how you intend to work under pressure to meet up with deadline target?

4195


What is meant by vector group

1498


State the formula for overall efficiency of thermal power station

2105


How to calculate no of Lighning arrestors are required for protecting 50mX 50m*20m cubical building and locations of LA?

1060