Electrical Engineering Interview Questions

why secondary of c.t. will kept open ?

L&T,

6601

WHY KVAR IMPORTANT WHEN ANY PLANT IS RUNNING ON IT'S OWN POWER PLANT?

6442

1.What is the maximum transmission voltage in india & where it is located? 2.more information about indian power scenario.

5295

What is the accepted limit to increase the choosen transformer capacity over the load and why ?

2783

why swityard is necessrry requirement in any bis power distributin systems?

1953

Why distribution transformer secondary voltage is 0.433kV instead of 0.415kV.all other switchgear rating are 415 volt??

8000

what is the working principle of a DG Set, Alternator, & exiter

9786

can we share mvar in parrelell connected alternators

3401

how i can calculate the size for fire cable

1543

I need model question papers for RRB section engineer Chennai... Please send to my E-mail Id:- maitheerainbow@gmail.com

NTPC,

1528

Installation resistance for whole installation of 16 kva & 25 KVA DTRA a) Between each conductor b) between conductor to earth c) installation resistance for each apparatus, each conductor to earth d) earth resistance for the system of earthing

1513

HOW TO MEASURE AC VOLTAGE BY USING GALVANOMETER?

2876

why single phase induction motors are not self staring ? how can we start the 1-phase Induction motor ?

BDL,

11322

400kw, 3.3Kv motor want to fix 1000km away from substation. What is full load current? and what is the cable size for motor? I amp expecting answer and advice from your side.. thanks...

7931

How the train speed control?

Bhel,

3361

Un-Answered Questions { Electrical Engineering }

how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage. note--it is tested with 5000 kv megger and insulation resistance is 0.05 M ohm. and some time 0.03 M ohm comes.

1792

How RTCC panel is working and give single line diagram for RTCC with transformer?

2688

how to minimize earth resistance upto 2Ω, if the resistance is 6 Ω ?

1502

Define phase lag and phase lead?

695

how calculate the electrical load for industry and office

8444

What do you understand by external characteristics of a d.c. Generator?

696

Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.

2364

What are the three major categories of error?

729

what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?

1516

What is difference between unity power factor wattmeter and upper power factor wattmeter? In short circuit test of transformer the wattmeter used is unity power factor type or upper power factor type wattmeter?

2341

What is the formula to calculate the rating of a three phase air circuit breaker

1866

hi friends this is a newcomer in your community of enthusiastic peoples. i am preparing for SSC (CPWD JUNIOE ENGG EXAM FOR ELECTRICAL) pls guide me on the same how to crack it? PLS LET ME KNOW IS ANYONE THERE WHO PASED IT? CAN I GET THE QUESTION PAPERS OF PREVIOUS EXAMINATIONS?

1826

defult setting in p220 micom motor proction relay for 11kv,640kw,f.l.a.-40a,1440rpm ht motor?

3298

can anyone give an idea about dia calculation in cold rolling mill

1234

what is the ms flat constant for calculating earth mat design calculation?

2069