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's mean by Transient stability analysis?

1 3351

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

Bhel, TVS Group,

1 25260

what's transient & sub- transient reactance means?

2 48434

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

1 4108

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

APCPDCL, PTCL, Rolls Royce, Siemens,

2 45630

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

2 5366

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

1 3260

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

IBM,

1 4841

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

1921

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 7228

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

Siemens,

1 5135

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 35436

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

5 12866

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

4 6676

is there any concept of armature reaction in Induction motor?

4 16693

Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

What descriptive information does the NEC require to be marked on all conductors?

1964

What are the three major categories of error?

1175

what is a types of short circuit and what is a types of distance protection tests

2213

How do u analyse protection fault when vcb tripping on load

1580

WHY IN AC DRIVES,INPUT PHASE CURRENT SHOW UNBALANCE?

2238

How can we increase fuel-power ratio of any DG set?

1772

explain comutator action in detail.thanks

2206

Why an ac systems are preferred over dc systems?

1057

what is the difference between surge protection capacitor and surge arrestor

2268

how to build a network which step down 415v to 1v rms

1927

if i am in front of transmission line how to know that current direction without any equipment

1714

Suppose a 3 phase, 2 pole, 440V induction motor is driving a flywheel of 600mm diameter, 150kg mass. By using v-belt and pulley, the speed is increased to 4500 RPM. What will be the effect on motor current?

1350

HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT SWITCH BOARD,MLDB,ACB,BUSBAR,ETC...?

3910

i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value

1884

How to calculate the size of earth cable to earth the neutral of UPS ?

1894

For More Un-Answered { Electrical Engineering } Questions Click Here