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Electrical Engineering Interview Questions

what solid earthing means?

15003

difference between a four point starter and three point starter

73468

wts d diff b/w C.T. & P.T.?

14132

enlist types of dc generator

10324

plz tell me in detail about c.t. and p.t. ?

6283

How to calculate electrical Induction motor heating and cooling time constant,11KV,2850,12P,SCIM

13839

In PFI plant one stage capacitor connection is directly connected(with out megnetic contact controll). but why?

1413

for 1000kva transformer how kvar rating is need for this PFI plant. and how does it will calculate? and Apmpere rating of main cable connection?

13654

EXPLAIN THE TRANSFORMER MAINTENANCE?

1289

errection check list for transformer maintenance

RRB,

1671

how we select the fuse and OLR rating for 3 phase induction motor from 1HP TO 100 HP?

10147

our company have 750 kva oil transformer.still we have facing a problem that is when voltage is 11.5 kv coming from HT side then LT-side voltage is 420v or above at tape 1.please give me best solution to decrease the voltage.

3186

if we are using ACB in a panel the how much clearance do we need in panel room.

3187

For Synchronisation of DG Sets Sometimes we people use NIC (Neutral Isolation Contactor) Instead of 4-pole ACB or any switchgerar..Please guide me why is it so????

23874

can we use metering current transformer as protection current transformer if not why? & if yes why?

13009

Un-Answered Questions { Electrical Engineering }

In siemens S7-300 PLC, what is function and function block ? What is the difference between them ? When to use function and when to use function block ?

1226

1sq mm dc powr cable can carry how much dc currnt

1031

How to define Kirchhoff current law and voltage law along with simply examples.

738

delta motor winding resistance I take normally single winding is 2.5, which value is came delta connection ie RY ?

1082

hello everybody. what does an abnormal stator winding impedance or dc resistance show? thanx

1087

sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.

943

describe the Operation of induction generators from bus bars

1332

what is the size of cable for 15kw motor and 85 meter cable length using with vfd

1530

What range of speed can you get with the field control method of speed control of d.c. Shunt motor?

197

In what condition the HT fuse breakes?

1045

What are the main significances of root locus?

207

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

1045

What do you mean by cogeneration? What its working principle?

2309

While testing LA mast,What are the parameter limits ?

1017

XYZ

1261