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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what's mean by Transient stability analysis?

1 2039

what's burden resistor, why it's used?

Bhel, TVS Group,

1 22762

what's transient & sub- transient reactance means?

2 45542

what's ripple content in rectifier? how it formed?

1 2616

what's float charger and boost charger? why it's used?

APCPDCL, PTCL, Rolls Royce, Siemens,

2 42091

In track electrification Either we use single conductor or double conductor? why?

2 3585

In electric motors, according to the no. of compartments, The no. of input's (pantagraph collector's) were increased, why?

1 1953

what's the difference between induction generator and synchronous generator?

IBM,

1 2948

what's the exact magnitude of current, flows through Neutral?

1106

While starting a high capacity motor, it takes 6 times the full load current. Why it doesn't trip relay or CB's in that network?

4 4782

How addressable fire systems work? Pl. send details with architect.(Loop), also send details regarding Gas system. Pl. help me.Thanks

Siemens,

1 3786

HOW TO FIND OUT 1. LINE CURRENT, 2. PHASE CURRENT IN AN ALTERNATOR / TRANSFORMER WHICH IS FEEDING A I)STAR LOAD ii) DELTA LOAD, USING A CLAMP METER. NORMALLY WHEN WE USE CLAMP METER IN A DG SET THEN WHAT DO WE GET?? PHASE CURRENT OR LINE CURRENT.

Bhel,

13 28118

WHAT IS THE THUMBRULE FOR FINDING OUT THE CURRENT CAPICITY OF A COPPER WIRE?? 2.5, 4, 6MM SQUARE ETC...

5 10046

why we step down the voltage from 440 to 220 in machines

4 4104

is there any concept of armature reaction in Induction motor?

4 12155


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Un-Answered Questions { Electrical Engineering }

how to get bearing & winding temperature of an induction motor?

985


why different series of vfds (like allenbradley)are used in industry ?

1329


A 100W electric lamp is supplied from a 115V, 60HZ source. The peak instantaneous power dissipated in the lamp filament is

1155


What is the problem of internal failure in ship engine telegraph system norcontrol?

1187


to vary valtage from 0 - max a variac is necessary . so how to design for high power applications nearly about 200KW power

1047






what is the minimum winding resistance of 30hp compressor, to run or to switch on

893


What is gross error?

185


what will happen if multimeter(selector switch at DC voltage) and terminal at current is connected to DC supply?

1056


What is the power factor of an alternator at no load?

220


what is the difference between online & offline caliberation of KWH meters. Can Digital meters be caliberated

1048


hi guys please tell me the procedure for mesuring the coil resistance of 3ph induction motor?

916


i need project topics along with circuit diagram in the electrical and electronics engg and also some websites regarding projets.

1079


Which standard we are following earthing resistance test

488


A 230V dc shunt wound motor has an armature resistance of 0,15Ω.When operating on no load at 650 rev/min the armature current is 6A . The motor takes a full load current of 85A. Calculate the full load speed if the field flux is (i) maintained constant (ii)reduced by 0,03

1076


A commercial Building is designed with 14th floor levels with indoor substation of three phase transformer with rated capacity of 1000 Kva.The transformer delivered 65% of its rated capacity at 0.67 power factor lagging.Because of low power factor, the power customer was penalized and certain cost was charged accordingly based on every point percentage lower than 85%.This situation may repeatedly happen on the succeding energy bills of power customer.The power customer is desired to improve its historical power factor of 0.67 lagging and no further penalty be impose by the local power company on the next bill. Q: Identify the appropriate solution you want to offer to Client?.Justify SCIENTIFICALLY and MATHEMATICALLY the principles behind the solution.

769