Electrical Engineering Interview Questions

whose the first invented AC voltage or DCvoltage

5258

What is the work of ACCP in LT panel?

25048

How many capacitors using in LT panel as per Govt rules?

1425

if we going for high voltage usages what are the considering factors, why those factors are effected.... please give me an answer related motor factors like wnidnig, frame, temp etc

ABB,

1652

we done magnetic balance test for 33KV /440V transformer in our company , but the ratio out is confusing us Voltage applied in RY = 440 , at RB = 320 and YB = 60 RY 440 = ( RB + YB ) 380 only Please let me know what type of problem is it.

4403

Either the Armoured Earthing strip of HT 3 core cable have to pass through CB CT or not , why ???

1482

help me with the question that might be ask on the interview for technical position

1733

what is difference b/w CFL and Ordinary lamps? which one is useful for power saving?

5366

we can conformed the vector group of the transformer. How?

1472

what is percentage impedance of transformer? explain its significance

ABC, Bosch,

16149

what does vector group Dyn11 tell us? also tell me how will u differentiate between phase lead and phase lag thru this vector group

1551

FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?

2858

what is meant by tranformer impedance?

2087

How do we calculate the resistance per metre of single core aluminium stranded cable 19*3.25mm sheathed in pvc,at 15 deg C temperature?

1847

WHY MOSTLY BATTERY VOLTAGE IS IN MULIPLE OF 2 LIKE 2V,4V,8V,16V,18V....

6167

Un-Answered Questions { Electrical Engineering }

How to know about the rating(voltage and other) of induction motor if its name plate is missing at the manufacturing site.

2791

How you give clearance to a spare feeder.

1154

mostly the questions were from machines... d.c. machines, transformer, synchronous and induction all theory paper........ few from power system... but the level of paper was easy.....

1421

how can decide the current rating of oltc

1792

TYPE'S OF BREKAR ,WHAT IS TRANSFORMAR & SAFTY. STARTER DOL & STAR DELTA STARTER.

2034

Is a d.c.compound motor is use as a booster? how?

1568

What is the range of the stator resistance of 3 phase induction motor?

1379

Why does the speed regulating system adopting I controller have no steady-state error? In this single closed-loop speed regulating system, when the input of the I controller Un=0, what is the output voltage of the regulator? What factors do the output voltage depend on?

1352

in Telecom DC system-why positive +ve is made earthed.and - ve is fed to load.

2073

The Howland current source produces a A Unidirectional floating load current B Bidirectional single-ended load current C Unidirectional single-ended load current D Bidirectional floating load current

1569

In siemens PLC, why do we want to move the data ?

1787

Fantio of tranformer

1645